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锌是植物体内酶的组成成分,它有提高作物光合率,增强作物抗逆性等多种动能,因而是蔬菜生长发育不可缺少的营养元素。稍有不足即会影响蔬菜的产量和品质。我区地处永定河冲积扇的西南边沿,不少土壤为永定河的近代沉积物,质地粗,碳酸钙含量高,故锌的有效率低,不利于蔬菜的生长发育。据日本的有关研究认为,要保证大白菜、黄瓜西红柿、茄子这几种蔬菜的正常生长发育,土壤有效锌含量不能低于1.167 pp
Zinc is a component of plant enzymes, which can improve crop photosynthetic rate, enhance crop resistance and other kinetic energy, which is an essential nutrient for growth and development of vegetables. Slightly deficient will affect the yield and quality of vegetables. My area is located in the Yongdinghe alluvial fan on the southwestern edge, many of the soil for the Yongding River modern sediment, coarse texture, high calcium carbonate, it is inefficient zinc is not conducive to the growth of vegetables. According to the relevant research in Japan, to ensure the normal growth and development of several vegetables, Chinese cabbage, cucumber tomatoes, eggplant, soil effective zinc content can not be less than 1.167 pp