Crop science overspray of potassium dihydrogen phosphate is good
Potassium fertilizer is one of the most needed fertilizer varieties for crop growth. Potassium dihydrogen phosphate is a high-concentration, water-soluble, quick-acting phosphorus and potassium fertilizer and is most commonly used by farmers for foliar spraying. It can promote the increase of crop yield, quality, drought resistance, antifreeze and lodging, and has a special effect on the prevention and control of crop diseases caused by the lack of physiological diseases, is an economic, simple and effective agronomic measures. It is understood that most of the farmers in our city have not mastered the application of potassium dihydrogen phosphate to the supernormal crops.
The so-called supernormal is the spraying of potassium dihydrogen phosphate beyond the conventional amount. According to the experimental study, the scientific application of supernormal can increase the yield significantly (up to 40% of the grain crops, and the economic crops are higher), improve quality on multiple surfaces (increased sugar content, fresh color, bright luster, increased starch, etc.), and the benefits are high ( The general input-output ratio is 1:10, and the high one is 1:20). It is flexible and easy to use (the solution can be used with the device, and the number of times can be increased or decreased as appropriate, and can be mixed with non-alkaline fertilizers, pesticides, or simultaneous spraying). , Ecological safety (does not pollute the environment and burn plants and their leaves), enhance their production, quality, drought, freezing, lodging and disease and pest resistance, comprehensive application effect is good. Here are some technical highlights for the superfluous application of potassium dihydrogen phosphate to several crops for reference.
1, wheat. The primary potassium dihydrogen phosphate solution shall be sprayed before the key growth periods such as greening, jointing, booting, flowering and grouting. The amount of mu is 400 g and the water is 30 kg.
2, corn. In the post-seedling, jointing period and large bell-mouth period, each application of potassium dihydrogen phosphate solution, 400 grams of mu, 30 kg of water.
3, peanuts. Seedlings at the seedling stage are sprayed with a solution of potassium dihydrogen phosphate for 1 time, 200 grams per mu, 30 kg water, 1 spray at the early flowering stage, 1 spray every 10 days during the pod stage, and 1 full-fruit ripening period. Each dose is 400 grams per acre, 30 kilograms of water.
4, soy. 200-400g of potassium dihydrogen phosphate was used for seeding, and the appropriate amount of water was used for seed dressing; potassium dihydrogen phosphate solution was sprayed once at the seedling stage, early flowering stage, full flowering stage, and drum seed stage, and the amount of mu was 400 g for water. kg.
5, cotton. Seedling stage (2~3 leaves) spraying 1st potassium dihydrogen phosphate solution, 200 grams of mu, 30 kilograms of water; 1 budding period, 400 grams of mu, 30 kilograms of water; before flowering to the top After the capping, each shot can be sprayed once. Each dose of 800 grams for each mu, and 60 kg for water, can be sprayed several times depending on the specific conditions.
6, rice. In the nursery period, 1% potassium dihydrogen phosphate solution can be sprayed 1 to 2 times. In the tillering, jointing, booting, and filling stages, each spray is used for 400 grams per acre and 30 kilograms for water. Multiple sprays during the grain filling period can significantly reduce disease occurrence.
7, watermelon. A single application of potassium dihydrogen phosphate solution at the seedling stage, 200 g of mu, 30 kg of water, 1 spray per acre, 400 g per acre per mu, 60 kg of water; 7 days to spray a potassium dihydrogen phosphate solution, the amount of 400 grams per mu, 60 kg of water. Before the sheds were harvested, two sheds were set aside and were sprayed with 800 grams of water and 60 kilograms.
8, rape. In the pre-emergence stage and the post-emergence stage, potassium dihydrogen phosphate solution is sprayed one time. The dosage per mu is 200 g, and the water is 30 kg. During the flooding stage, spraying twice, the dosage per acre is 400 g, and the water is 30 kg; To mature stage, spraying once every 10 days, the amount of 800 grams per mu, 60 kg of water.
9, sesame. During the seedling stage (before 6 leaves), the potassium dihydrogen phosphate solution is sprayed once. The amount of mu is 200 g, and the water is 30 kg. From the flowering period to the capping period, it can be sprayed once every 10 days. The dosage per mu is 800 grams. 60 kg of water; 1 to 2 sprays before maturity, 400 grams per mu, 30 kg water.
10, sweet potatoes. The seedbed stage is sprayed with 1% potassium dihydrogen phosphate solution for 2 to 3 times; when transplanted in the field, roots are soaked with 1% potassium dihydrogen phosphate solution; the root tuber stage, stem and leaf growth stage, and potato block expansion stage are sprayed once. , The amount of 600 grams per mu, 45 kg of water.
11, cucumber, tomato, beans, eggplant. The seedling stage was sprayed twice with 1% potassium dihydrogen phosphate solution; 1% potassium dihydrogen phosphate solution was used to dip the roots during transplanting; the seedlings were sprayed twice before the flowering stage, and 200 g of potassium dihydrogen phosphate was used per mu. 30 kilograms of water; spray every 7 days after fruit set, 200 g per mu, and 30 kg water.
12, cabbage, Chinese cabbage. The seedling stage was sprayed twice with 1% potassium dihydrogen phosphate aqueous solution. The initial stage of the ball was to spray once every 10 days. The dosage was 400 grams per mu, and 60 kg water.
13, radish (white radish, carrots). After Dingling (3 to 4 true leaves), the solution of potassium dihydrogen phosphate is sprayed twice. The dosage per mu is 200 g, and the water is 30 kg. The swelling period (flesh rootless shoulder) is sprayed once every 10 days. The amount of mu is 400 grams, 30 kilograms of water, can also be flushed with water evenly when watering. The dosage of 3 kilograms per mu is appropriate.
15, garlic. Before wintering, spray with 1% potassium dihydrogen phosphate solution 1 or 2 times; turn green to spray once every 10 days before the convulsions, 400 grams per mu dose, 30 kg water.
16, onions. 1 Welsh onion: In the nursery period, we sprayed with 1% potassium dihydrogen phosphate solution for 2 to 4 times. After transplanting, 15 days before harvest, we sprayed 1% potassium dihydrogen phosphate solution once every 10 days. 2 onions: 10 to 15 days before colonization, spraying with 1% potassium dihydrogen phosphate aqueous solution once; after planting, when returning green, leaf growing vigorously, onion swelling period, spraying two or three times, each Acre 400 grams of water for each 60 kg, before the expansion period, can also be applied 3 kg per acre.
When spraying various crops, attention should be paid to the application period, the number of applications and the spraying concentration, and the application period and spraying concentration should be coordinated with each other. Strict compliance must be strictly observed, and the number of applications may be increased or decreased as appropriate. Can also add a small amount of urea mixed spray, but can not be mixed with alkaline pesticides or alkaline fertilizer spray, so as not to reduce fertilizer efficiency. Also do a uniform spray.
The so-called supernormal is the spraying of potassium dihydrogen phosphate beyond the conventional amount. According to the experimental study, the scientific application of supernormal can increase the yield significantly (up to 40% of the grain crops, and the economic crops are higher), improve quality on multiple surfaces (increased sugar content, fresh color, bright luster, increased starch, etc.), and the benefits are high ( The general input-output ratio is 1:10, and the high one is 1:20). It is flexible and easy to use (the solution can be used with the device, and the number of times can be increased or decreased as appropriate, and can be mixed with non-alkaline fertilizers, pesticides, or simultaneous spraying). , Ecological safety (does not pollute the environment and burn plants and their leaves), enhance their production, quality, drought, freezing, lodging and disease and pest resistance, comprehensive application effect is good. Here are some technical highlights for the superfluous application of potassium dihydrogen phosphate to several crops for reference.
1, wheat. The primary potassium dihydrogen phosphate solution shall be sprayed before the key growth periods such as greening, jointing, booting, flowering and grouting. The amount of mu is 400 g and the water is 30 kg.
2, corn. In the post-seedling, jointing period and large bell-mouth period, each application of potassium dihydrogen phosphate solution, 400 grams of mu, 30 kg of water.
3, peanuts. Seedlings at the seedling stage are sprayed with a solution of potassium dihydrogen phosphate for 1 time, 200 grams per mu, 30 kg water, 1 spray at the early flowering stage, 1 spray every 10 days during the pod stage, and 1 full-fruit ripening period. Each dose is 400 grams per acre, 30 kilograms of water.
4, soy. 200-400g of potassium dihydrogen phosphate was used for seeding, and the appropriate amount of water was used for seed dressing; potassium dihydrogen phosphate solution was sprayed once at the seedling stage, early flowering stage, full flowering stage, and drum seed stage, and the amount of mu was 400 g for water. kg.
5, cotton. Seedling stage (2~3 leaves) spraying 1st potassium dihydrogen phosphate solution, 200 grams of mu, 30 kilograms of water; 1 budding period, 400 grams of mu, 30 kilograms of water; before flowering to the top After the capping, each shot can be sprayed once. Each dose of 800 grams for each mu, and 60 kg for water, can be sprayed several times depending on the specific conditions.
6, rice. In the nursery period, 1% potassium dihydrogen phosphate solution can be sprayed 1 to 2 times. In the tillering, jointing, booting, and filling stages, each spray is used for 400 grams per acre and 30 kilograms for water. Multiple sprays during the grain filling period can significantly reduce disease occurrence.
7, watermelon. A single application of potassium dihydrogen phosphate solution at the seedling stage, 200 g of mu, 30 kg of water, 1 spray per acre, 400 g per acre per mu, 60 kg of water; 7 days to spray a potassium dihydrogen phosphate solution, the amount of 400 grams per mu, 60 kg of water. Before the sheds were harvested, two sheds were set aside and were sprayed with 800 grams of water and 60 kilograms.
8, rape. In the pre-emergence stage and the post-emergence stage, potassium dihydrogen phosphate solution is sprayed one time. The dosage per mu is 200 g, and the water is 30 kg. During the flooding stage, spraying twice, the dosage per acre is 400 g, and the water is 30 kg; To mature stage, spraying once every 10 days, the amount of 800 grams per mu, 60 kg of water.
9, sesame. During the seedling stage (before 6 leaves), the potassium dihydrogen phosphate solution is sprayed once. The amount of mu is 200 g, and the water is 30 kg. From the flowering period to the capping period, it can be sprayed once every 10 days. The dosage per mu is 800 grams. 60 kg of water; 1 to 2 sprays before maturity, 400 grams per mu, 30 kg water.
10, sweet potatoes. The seedbed stage is sprayed with 1% potassium dihydrogen phosphate solution for 2 to 3 times; when transplanted in the field, roots are soaked with 1% potassium dihydrogen phosphate solution; the root tuber stage, stem and leaf growth stage, and potato block expansion stage are sprayed once. , The amount of 600 grams per mu, 45 kg of water.
11, cucumber, tomato, beans, eggplant. The seedling stage was sprayed twice with 1% potassium dihydrogen phosphate solution; 1% potassium dihydrogen phosphate solution was used to dip the roots during transplanting; the seedlings were sprayed twice before the flowering stage, and 200 g of potassium dihydrogen phosphate was used per mu. 30 kilograms of water; spray every 7 days after fruit set, 200 g per mu, and 30 kg water.
12, cabbage, Chinese cabbage. The seedling stage was sprayed twice with 1% potassium dihydrogen phosphate aqueous solution. The initial stage of the ball was to spray once every 10 days. The dosage was 400 grams per mu, and 60 kg water.
13, radish (white radish, carrots). After Dingling (3 to 4 true leaves), the solution of potassium dihydrogen phosphate is sprayed twice. The dosage per mu is 200 g, and the water is 30 kg. The swelling period (flesh rootless shoulder) is sprayed once every 10 days. The amount of mu is 400 grams, 30 kilograms of water, can also be flushed with water evenly when watering. The dosage of 3 kilograms per mu is appropriate.
15, garlic. Before wintering, spray with 1% potassium dihydrogen phosphate solution 1 or 2 times; turn green to spray once every 10 days before the convulsions, 400 grams per mu dose, 30 kg water.
16, onions. 1 Welsh onion: In the nursery period, we sprayed with 1% potassium dihydrogen phosphate solution for 2 to 4 times. After transplanting, 15 days before harvest, we sprayed 1% potassium dihydrogen phosphate solution once every 10 days. 2 onions: 10 to 15 days before colonization, spraying with 1% potassium dihydrogen phosphate aqueous solution once; after planting, when returning green, leaf growing vigorously, onion swelling period, spraying two or three times, each Acre 400 grams of water for each 60 kg, before the expansion period, can also be applied 3 kg per acre.
When spraying various crops, attention should be paid to the application period, the number of applications and the spraying concentration, and the application period and spraying concentration should be coordinated with each other. Strict compliance must be strictly observed, and the number of applications may be increased or decreased as appropriate. Can also add a small amount of urea mixed spray, but can not be mixed with alkaline pesticides or alkaline fertilizer spray, so as not to reduce fertilizer efficiency. Also do a uniform spray.
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