苹果叶面喷肥技术

• 出 处: 河南林业科技
• 发表日期: 1998年01期
• 关键词: 叶面喷肥 补肥 小叶病 花芽发育 缺锌 尿素液 果实质量 果实硬度 花后 生理落果

苹果叶面喷肥技术叶面喷肥是快速补肥的有效办法，是盛果期果树高产优质的重要措施。具体方法：（１）前期叶面喷肥。一般在３月下旬至５月下旬。目的促进叶、花芽发育及提高坐果率，以氮肥为主。缺锌（发生小叶病）时，发芽前１０～１５ｄ对枝、芽喷０．５％硫酸锌；盛花...

Apple foliar fertilizer technology Foliar spray fertilizer is an effective way to quickly supplement fertilizer, fruit trees is an important measure of high yield and quality of fruit trees. Specific methods: (1) pre-foliar fertilizer. Generally in late March to late May. Objective To promote the development of leaves and flower buds and improve the rate of fruit setting, with nitrogen as main ingredient. Zinc deficiency (leaflet disease occurs), 10 ~ 15d before germination of branches, bud spray 0.5% zinc sulfate;