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锌是作物必不可少的微量元素。从1981年以来,我们在土壤普查的基础上,对铜梁县各种土类进行了有效锌含量调查与锌肥施用的推广工作,现小结于后: 一、方法:按土壤类型、成土母质及土壤面积大小在县内合理布置了45个采样点,取样送西南农业大学土化系化验,分析土壤有效锌含量。根据分析结果开展了锌肥品种试验、锌肥有效施用条件试验、锌肥容量试验等。并在不同作物上进行了施用与推广。二、结果:土壤有效锌
Zinc is an essential trace element of crops. Since 1981, based on the soil census, we conducted a survey on the effective zinc content of various soil types in Tongliang County and the promotion of the application of zinc fertilizers. Now summarized in the following: 1. Method: According to soil type, soil formation Parent material and soil area The size of the county reasonable arrangement of 45 sampling points, sampling samples sent to Southwest Agricultural University, Department of Chemistry, analysis of soil available zinc content. According to the results of the analysis of zinc fertilizer varieties tested, zinc fertilizer effective application conditions test, zinc fertilizer capacity test. And in different crops for the application and promotion. Second, the results: soil effective zinc