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锌是细胞的必要成分,它与叶绿素、生长素合成有关,又是许多酶的组成成分,并参与碳水化合物代谢,是农作物常见的微量元素之一。根据黄灌区灌淤土耕层微量元素普查分级标准,93％耕地土壤有效态锌含量处于低值范围,其中小于0.5ppm 占48.09％,0.5～1ppm 占44.94％。锌的供给可能不足,为此从1981～83年进行水稻锌肥肥效试验和示范,以期为我区水稻施肥提供技术资料。一、试验基本情况1981～83年试验地分别设在中宁、贺兰、暖泉农场、灵武农场、银川市郊及土肥所试验基地;土壤类型除土肥所基地为湖土外,其它点均为灌淤土。供试水稻品种多数为京引39,少数为杂交稻。锌肥施量设2、
Zinc is an essential component of cells, it is related to the synthesis of chlorophyll and auxin, and is also a component of many enzymes involved in carbohydrate metabolism and is one of the common trace elements in crops. According to the classification standard of trace elements in silt irrigation silt and silt irrigation in Yellow River irrigated area, the effective zinc content in 93% of cultivated land is in a low value range, in which less than 0.5ppm occupies 48.09% and 0.5 ~ 1ppm accounts for 44.94%. Zinc supply may not be sufficient, for which from 1981 to 83 fertilizer experiments and demonstration of zinc fertilizer in rice in order to provide technical information for our region fertilization. First, the basic situation of the experiment 1981 to 1983 were located in Zhongning, Helan, Nuquan farm, Lingwu farm, Yinchuan suburbs and soil test base; soil types in addition to soil-based fertilizer for the lake, the other points are Irrigation silt soil. The majority of rice varieties tested were Jingyin 39 and a few were hybrid rice. Amount of zinc fertilizer set 2,