前言多年来,我区在蔬菜主产中使用单一的氮、磷化肥,加之有机肥料用量减少,所以影响蔬菜生长发育所需的微量元素得不到补充,由此诱发了一些缺至素症及其它生理病变.如近年来栽培的辣椒普遍发生叶片褪绿和落叶现象,除由病害影响外,可能与某些元素缺乏有关.如缺钙导致大白菜的干烧心 Preface For many years, our district main application of vegetables in the use of a single nitrogen and phosphorus fertilizers, combined with reduced use of organic fertilizers, so affect the growth and development of vegetables required trace elements are not supplemented, which induced some lack of complications and Other physiological diseases, such as the cultivation of pepper in recent years generally leaves chlorotic and deciduous phenomenon, in addition to the disease affected, may be related to the lack of certain elements such as calcium deficiency lead to Chinese cabbage heartburn