不同作物对微量元素的反应极不相同,一般可分为,最灵敏、中等灵敏和不灵敏三类。据报导,小麦、大麦是对锌不灵敏的作物;但也有人认为,在石灰性土壤上,锌对小麦有增产作用;氮、锌配合有提高小麦产量、籽粒蛋白质含量和质量的作用。我们于1977年秋播开始,在所内、所外进行了锌对三麦的多点肥效试 The response of different crops to trace elements is very different, generally can be divided into, the most sensitive, moderately sensitive and insensitive three categories. It is reported that wheat and barley are insensitive crops to zinc. However, some people think that zinc can increase the yield of wheat in calcareous soil and nitrogen and zinc can increase the yield and grain protein content of grain. We started broadcasting in the autumn of 1977, where we carried out more fertilizer trials of Zinc on San Mai