Yelai vegetables refer to green leafy vegetables with a short growing period, such as cabbage, green vegetables, leeks, spinach, celery, and kale, etc., and their leaves are used for whole plants. Due to the dense planting of this vegetable plant group, the distribution of roots is shallow, and the requirements for soil available nutrients are urgent and sensitive. Once the nutrients are insufficient, the leaves grow slowly and become yellow. Therefore, the top dressing method is mainly used for top dressing. The nutrient elements should be dominated by quick-acting nitrogen fertilizers. Generally, after the seedling stage and every harvest of a product, the fertilizer is immediately top-dressed to promote the rapid growth of the leaves of the plant. The amount of topdressing fertilizer per acre is 8 to 10 kilograms of urea or 400 to 500 kilograms of human excreta, or water is poured one by one to facilitate absorption and utilization as soon as possible. Disposable Electric Hook,Electric Hook,Disposable Electrocoagulation Instruments,Instruments Electric Hook ZHEJIANG SHENDASIAO MEDICAL INSTRUMENT CO.,LTD. , https://www.sdsmedtools.com
How to fertilize leafy vegetables