Detailed Explanation of New Key Points for Fertilization Management of Legume Vegetables

Legume vegetables have moderate fertilizer requirements; although they have root nodules, their nitrogen fixation is very weak. During the seedling stage before rhizobia develop, it is very necessary to use the quick-acting nutrients in the base fertilizer to promote plant growth and development. If undecomposed chicken manure or other organic fertilizer is applied, it will lead to an increase in reducing gases in the soil and a decrease in oxygen, causing seed rot and premature root aging, with a great impact on yield. Therefore, fully decomposed organic fertilizer should be chosen for the base fertilizer, and excessive nitrogen fertilizer should not be used.

Topdressing is generally carried out 20 to 25 days after sowing. When legume vegetables begin flower bud differentiation, if sufficient base fertilizer was not applied and symptoms of fertilizer deficiency appear, topdressing should be carried out promptly with diluted human and livestock manure and urine, or potassium sulfate can be added to the diluted manure. Topdress early, but applying too much nitrogen fertilizer at the seedling stage will cause leggy growth in legumes; therefore, the amount of topdressing should be determined according to plant growth. In addition, spraying New High Lipid Film + Fruit Thickening Agent during the pod-setting stage can activate the positive energy of plant ecological growth, broaden the plant's vascular pathways, enhance the plant's water and fertilizer absorption capacity, and improve fruit yield and quality.