(1) Fertilization before planting According to the summary of China's early high-yielding peach production techniques, 75 tons of farmyard manure and 750 kilograms of superphosphate and 450 kilograms of potassium sulphate were mixed per hectare prior to the construction of the garden, and were distributed in planting holes and then filled in. Into the soil, and mix with the fertilizer to prepare for planting.
At the time of colonization, 50 liters of water plus 1.5 kilograms of superphosphate and soil were used to adjust the mud, and the roots of the peach seedlings were filled with mud and then planted. This will not only improve the survival rate, but also enable the seedlings to grow robustly and lay a good foundation for flowering results.
(2) Application of basal fertilizer The peach-based basal fertilizer is mainly farmyard manure, and 30-50 kilograms of each manure Peach is applied to farmer's manure, and the soil should be combined with deep plowing to improve the soil. The method of groove application or annular groove application has a groove depth of 40-50 cm and a width of 50 cm. The length of the groove depends on the size of the tree and the amount of fertilizer. After applying the farmyard fertilizer, fill it with topsoil, mix topsoil with fertilizer, and cover it with subsoil, slightly compacted. Basal fertilizer is best combined with irrigation. It is better to use late autumn or early winter for the fertilization period. If the base fertilizer is applied in early spring, it should be as early as possible. When the soil temperature stabilizes at 4-5°C, the peach roots begin to move; the soil temperature rises and the root activity increases. If you do not pay attention to protecting the roots when digging a fertilization ditch, a large number of roots will affect the absorption of roots.
Generally, the amount of nitrogen fertilizer in peach trees is 0.23-0.45 kg nitrogen per tree, which is equivalent to 0.5-1 kg of urea. The amount of saplings should be reduced, and then the nitrogen is increased by 0.056 kg per year, equivalent to 0.12 kg of urea, until it is increased to nitrogen. After 0.45 kg no longer increase. In the whole growth period, 1/2 of nitrogen fertilizer was mixed with farmyard manure as base fertilizer and the other half as top dressing. Phosphorus and potassium fertilizers were mixed with farmyard fertilizers as base fertilizers. The amount of phosphorus and potassium fertilizer was based on nitrogen fertilizer, and the ratio of nitrogen, phosphorus, and potassium was 1:0.6:1. If you do not use simple fertilizer and use compound fertilizer (must be three yuan compound fertilizer), then the amount of 1/3 for the base fertilizer, and the other two-thirds for top dressing.
(3) Application of top dressing On the basis of the base fertilizer, 1â„2 of the total nitrogen fertilizer is used as top dressing. Each time before flowering and after physiological fruiting, it was applied one time. The amount of topdressing fertilizer accounted for 1/4 of the total amount of nitrogen fertilizer. Compound fertilizers should also be applied before flowering and after physiological fruiting. Each time the amount of fertilizer is 1/3 of the total amount.
Extra-root topdressing is a necessary supplement for soil fertilization. Since peaches are sensitive to trace elements, temporary relative deficiencies tend to occur. Therefore, it is even more important for top dressing. It is reported that spraying 0.2% boric acid aqueous solution at the early flowering stage can achieve fruit set rate of 88.73%. In late August to early September, 0.4% potassium dihydrogen phosphate was sprayed, and the primary frost damage index was 29.8%, which was 12.9% lower than that of spray water control. Spraying 0.2%-0.3% calcium nitrate during rapid fruit enlargement period can increase the hardness of the fruit, reduce the number of sutures and softened fruits in the tip and fruit carpel, and increase the fruit grade.
PGA is a water
soluble, biodegradable, non-toxic biopolymer produced by microbial
fermentation. PGA is a sticky material first found in "natto", a
fermented soybean. PGA is an unusual anionic, naturally occurring homo
polyamide that is made of D & L glutamic acid units connected by amide
linkages between alpha amino & gamma carboxylic acid groups.
Gamma-poly-glutamic acid (gamma-PGA) is a natural occurring, multi-functional,
and biodegradable biopolymer.
It is produced
through fermentation by Bacillus subtilis using glutamic acid. PGA is consists
of glutamic acid monomers crosslinked between α-amino and γ-carboxyl groups,
and the molecular weight of PGA is usually between 100~1000 kDa. It is
water-soluble, edible and non-toxictowards human, and is environment friendly.
It has broad applications in the fields of medicine, food, cosmetics, and water
treatment.
Specification
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CAS No.:
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25513-46-6
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Other Names:
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Polyglutamic Acid
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Grade Standard:
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Food
Grade, Cosmetic Grade, Agricultural Grade
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Usage:
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Animal Pharmaceuticals
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Purity:
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99%min
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Appearance:
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White Powder
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Product Name:
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Polyglutamic Acid
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CAS:
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25513-46-6
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Shelf life:
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2 Years
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Poly-γ-glutamic Acid
Poly Y Glutamic Acid,Poly Gama Glutamic Acid,High Purity Polyglutamic Acid,Glutamic Acid Production
Qufu Hi-Tech Trading Co., Ltd. , https://www.chinahyaluronic-acid.com