Spring maize should be based on the basic principle of base fertilizer as the supplement, farmyard manure as the main fertilizer, nitrogen fertilizer as the main supplement, and spike fertilizer as the main principle of fertilization.
The base fertilizer should generally account for about 70% of the total fertilization. Most of the phosphate fertilizer should also be combined with the base fertilizer, and it is generally applied in combination with autumn tillage in the previous year. When applying the base fertilizer, it should be evenly mixed with the soil. If nitrogen fertilizer is used as the base fertilizer, it must be applied deep to prevent nitrogen loss. In the phosphorus-deficient soil, 450-600 kg of calcium per hectare is applied; in the potassium-deficient soil, 150 kg of potassium chloride per hectare is applied; in the zinc-deficient soil, 15 kg of zinc sulfate heptahydrate is applied per hectare.
Before the spring sowing, use a small amount of farmyard manure with a suitable amount of nitrogen, phosphate fertilizer or acupoint application as corn seed fertilizer.
Spring corn topdressing adopts the “pre-light and heavy†fertilization method, that is, 1/3 of the total amount of topdressing is applied before the jointing of the corn, and 75-150 kg of urea per hectare is applied, and the total amount of topdressing is applied in the big bell mouth. 2/3, 150-300 kg of urea per hectare, to meet the needs of nutrients in the spikelets, floret differentiation and grain formation stages of maize ears. The test results confirmed that the spring corn adopts the “pre-light and heavy†fertilization method, which is 13.3% higher than the “pre-weight and light†fertilization method.
Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone
China Daily chemical Suppliers
Here you can find the related products in Daily chemical, we are professional manufacturer of Daily chemical. We focused on international export product development, production and sales. We have improved quality control processes of Daily chemical to ensure each export qualified product.
If you want to know more about the products in Daily chemical, please click the Product details to view parameters, models, pictures, prices and Other information about Daily chemical.
Whatever you are a group or individual, we will do our best to provide you with accurate and comprehensive message about Daily chemical!
Hydrolyzed Keratin, Menthol, Daily Chemistry, Cosmetics Field
Xi'an Gawen Biotechnology Co., Ltd , https://www.ahualyn-bio.com