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甘肃河西地区内陆盐碱土多数处在泉水溢出带,土壤中碳酸盐含量很高,pH值在8.0～8.5之间,春季泛浆以后,由于土壤富含水分,土温回升很慢,造成了寒冷潮湿的农业气候特征.根据我们二年的试验证实,该地区的盐碱土是一种缺锌的土壤,只要施用一定数量的锌肥,就能防治玉米的白苗、花叶生理病害,使玉米正常发育,并能大幅度提高其单产.现将试验结果整理如下:
Most of the inland saline-alkali soil in Hexi area of Gansu is in the overflow zone of spring water, and the carbonate content in the soil is very high, the pH value is between 8.0 and 8.5. Since the spring flooding, the soil temperature rises slowly due to the soil is rich in water Cold and humid agricultural climatic characteristics.According to our two years of experiments confirmed that the area of saline soil is a zinc-deficient soil, as long as the application of a certain amount of zinc fertilizer, we can prevent and control corn white Miao, mosaic physiological diseases, So that the normal development of corn, and can significantly improve its yield. Now the test results are summarized as follows: