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植物缺少微量营养元素主要原因是土壤供应不足。我省土壤类型比较复杂,气候条件和种植制度各不相同,故土壤中的各种营养元素也有所差异。为了摸清我省中部地区几种主要类型土壤中微量营养元素的总量和有效性含量,进一步阐明微量元素肥料的适用条件,为科学施用微肥提供依据,我们于1982年进行了试验和研究。一、试验材料和方法本试验采用测试不同土类、不同形态微量元素的含量和幼苗培养相结合的方法。供试土壤于春天播种以前在我省中部地区各县的生产队采集。采集的土类共有12种。有沟淤淡褐土、褐潮土、石灰岩山地褐土、潮黄土、淡褐土、沟淤山地褐土、黄土
The main reason for the lack of micronutrients in plants is the insufficient supply of soil. Soil types in our province is more complicated, climatic conditions and planting systems vary, so the various nutrients in the soil are also different. In order to ascertain the total amount and the effective content of trace nutrients in several main types of soils in the central region of our province, to further clarify the conditions for the application of trace element fertilizers, to provide a basis for the scientific application of trace fertilizers, we conducted in 1982 experiments and studies . First, the test materials and methods This test uses different soil types, different forms of trace element content and seedling culture combined method. The test soil was harvested in the production teams of all counties in the central part of our province before sowing in the spring. A total of 12 kinds of soil collected. There are ditch silt cinnamon soil, brown soil, limestone mountain cinnamon, tide loess, pale cinnamon, ditch silt mountain cinnamon, loess