For every 100 kg of corn grain produced, 2-4 kg of pure nitrogen, 0.7-1.5 kg of phosphorus, and 1.5-4.0 kg of potassium are required. If the output of corn per acre is to reach 400 kilograms, an average of 40-60 kilograms of ammonium sulfate or equal amount of other nitrogen fertilizer should be applied per acre; 40-60 kilograms of superphosphate (active ingredient content 10%-16%) or equivalent. Of heavy superphosphate (36%-52% water content of active ingredients) and calcium magnesium phosphate (12%-16% of active ingredients); 6-10 kg of potassium sulfate (48%-52% active ingredient) or chlorine Potassium (active ingredient content 50%-52%). Potash can also be replaced with plant ash, with an amount of 40-60 kg per mu (dry ash, no impurities).

When determining the amount of corn fertilization, comprehensive consideration should be given to factors such as corn planting type, variety characteristics, yield level, soil and climatic conditions. Since the plants are small and grow slowly in the seedling stage, the absorption and utilization of nutrients is also small. From jointing booting to heading and anthesis, the growth rate of corn is accelerated, vegetative growth and reproductive growth go hand in hand, and the absorption and utilization of nutrients increase significantly; After the vegetative growth is almost in a stagnant state, the absorption and utilization of nutrients is greatly reduced, and it is almost at a standstill. Http://

Onion

Fresh onion,Fried shallot,size:6-8,7-9.8-11,packed mesh bags.

White Fresh Onion,White Onion Nutrition,Pickled White Onions,Fresh Onion Vegetables

Jining Sunagro Trade Co., Ltd. , https://www.sunagro-food.com