Autumn and winter vegetables, especially autumn delayed vegetables, are prone to calcium deficiency after winter. Experts suggest that attention should be paid to calcium supplementation and less application of chlorinated fertilizer.
When the ground temperature drops in autumn, the roots of vegetables will gradually age, which will affect the effective absorption of fertilizers by crops. At present, the delayed vegetables in autumn are in a period of vigorous growth, and special attention should be paid to the supplement of fertilizers, especially the supplement of calcium fertilizers.
If the new parts of your vegetables, such as the top buds and root hairs, are stagnant, atrophy and death, the new leaves stick together, the new leaves are often focal, and the incompleteness is incomplete; the top of the fruit is sunken and dark brown and necrotic, it is probably due to soil. Calcium is lacking because the soil itself has less calcium; while the salt content is high, it inhibits the roots from absorbing water and nutrients. In addition, the soil drought in autumn and winter makes the concentration of soil solution increase, which reduces the water absorption of roots and inhibits the absorption of calcium.
Fertilization of vegetables in autumn and winter seasons should be scientific, and the amount of fertilizer should be controlled. It is not advisable to use too much fertilizer at one time, especially with chlorinated fertilizers such as ammonium chloride and potassium chloride, and timely irrigation to prevent soil drought. At the same time, the leaf surface is sprayed with 0.3% to 0.5% calcium nitrate, once every 7 days, and even sprayed 2 to 3 times. Tomatoes should be sprayed on 2 to 3 leaves above and below the inflorescence during flowering, and Chinese cabbage can be sprayed when entering the ball-forming stage.
Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone
Antiparasitic Veterinary Drug,Veterinary Drug Apis,Bulk Drug Dimetridazole,Raw Material Medicine Powder
NANYANG CHENGPENG PHARMACEUTICAL CO.,LTD , https://www.chppharm.com