Rice Paddy Field Disease and Pest Control Technology

First, weeding
l. Fertilizer Beds The characteristics of weeds in rice nursery beds in dry nursery fields are: the occurrence of xerophilia, aquatic weeds and weeds are numerous, and the damage is heavy. Chemical weed control is the key to control the damage of weeds. The technology in addition to technology is:
(1) Soil treatment: After the seedbed is well prepared, pour enough water, leave the valley and close the soil and spray the pesticide. Use 50ml of 36% water and dry emulsifiable concentrate for every 50 square meters of seedbed, 4-5 kg ​​of water, evenly sprayed. Apply to the soil surface, blow dry for 40 minutes or add a barrier, and then cover the membrane.
Precautions: When medication, seedlings can not have stagnant water; do not increase the dosage; cover soil should be uniform and tight, can not have dew; moisture, earthworms, water and other crops field disabled; leakage sand, seed seedbeds are disabled.
(2) After removing the film, if the drug is not used before the film is covered, more weeds are found in the field after removing the film. In the second leaf stage of the seedlings, immediately after the water is poured, the medicine is used to remove the pesticide. Every 2 minutes, the field uses 36% straw. 1 bag (6g) net (秧 grass-free), 12Kg evenly sprayed with water.
2. For the conventional semi-humid fields where seedlings are planted and cultivated, Minamata Field shall control the seedlings at the 2 leaf stage and put shallow water. Use 2 bags of straw (36% straw) (6g) for every 2 minutes of paddy fields, and spray 12Kg uniformly.
Second, underground pests control the wet soil of the rice nursery beds, which are beneficial to the activities and harms of underground pests such as earthworms, earthworms, and ground tigers, and should be prevented and treated as soon as possible. The operation method is: 5-7 days before falling valley, after the seedlings are leveled, use 3% carbofuran 3-4Kg per acre, mix 30Kg of fine soil, apply spasm on the surface, and water with shallow spin.
3. Seedlings of the seedlings have been used to prevent drought, eel, and seedlings. They have the characteristics of fat footing, tender seedlings, and high moisture content. They are highly susceptible to rice blast disease, perennial seedlings, and severe disease areas, as well as susceptible varieties such as salt picking No.2, Wuyuyu, and Yangxun 9538. , To prevent the use of drugs early in the 4-5 leaf stage of seedlings. Once a disease occurs in the field (in early June), medication must be used to block the disease center and control the spread. Specific methods: 100 grams of 20% tricyclazole WP per acre, watered 40 kg spray.

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