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陕西土壤多系石灰性土壤,有效含锌量偏低,从南到北呈递减趋势。缺锌的土壤,玉米出现白苗病;水稻发生“赤枯”病。陕西植物缺锌,六十年代有果树小叶病,八十年代,在陕南、陕北发现玉米花白苗;在陕南有水稻僵苗。为了进一步摸清情况,近年我们在玉米、水稻、小麦等主要粮食作物上进行了锌肥肥效多点试验。
Many soil calcareous soils in Shaanxi Province, the effective zinc content is low, showing a decreasing trend from south to north. Zinc deficiency in the soil, white rice emergence of corn; rice “red dry” disease. Zinc deficiency in Shaanxi plants, fruit leaflet disease in the 1960s, poplar seedlings in southern Shaanxi and northern Shaanxi in the 1980s, and paddy seedling in southern Shaanxi. In order to further clarify the situation, in recent years, we have carried out fertilizers on corn, rice, wheat and other major food crops more trials.