High yield fertilization of corn
First, apply enough base fertilizer. The base fertilizer is mainly organic fertilizer, with nitrogen, phosphorus and potassium compound fertilizer. Generally, 190-2000 kg of organic fertilizer is applied to the acre, and 25 kg of nitrogen, phosphorus and potassium compound fertilizer is applied to the soil. After fertilization, the fine soil is covered with 2-3 cm thick and then the soil is sown, and 10 tons of manure is drenched.
Second, early application of seedlings. When the corn is 4-6 leaves, 10-15 kg of calcium phosphate, 3-5 kg ​​of urea, 2 kg of zinc fertilizer, and 10-15 of human and animal manure are applied.
Third, chase the attack lever fertilizer. When the corn grows to 8-9 leaves, 10-15 kg of high-efficiency ternary compound fertilizer, 1500-2000 kg of manure water, 10-15 kg of ammonium bicarbonate, combined with cultivating loose soil.
Fourth, re-apply attacking manure. When the corn enters the big bell mouth, the booting stage is the sensitive period of water and fertilizer. Generally, 10-15 days before heading, the application of quick-acting nitrogen fertilizer, ammonium bicarbonate 30-40 kg or urea 20-25 kg, is evenly mixed with human and animal manure 15-20.
Fifth, discretionary use of strong grain fertilizer. Before the heading of the corn to the flowering, depending on the growth of the corn, the 3-4 kg of urea can be used to fill the manure with urea; or it can be used at 8-9 am or 5 pm after the flowering, and 0.3-0.4% of the acre is used. Potassium dihydrogen phosphate plus 0.5% urea solution was sprayed. Application of granular fertilizer can prevent premature senescence of leaves, increase photosynthesis, prolong filling period and increase seed setting rate.
Polyphenols,Plant Polyphenol,Antioxidant
Shaanxi Zhongyi Kangjian Biotechnology Co.,Ltd , https://www.zhongyibiotech.com