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我区位于江汉平原,水稻土的成土母质主要是近代河流冲积物和湖积物,部分发育于第四纪红色粘土层。pH值一般在7.5—8.5之间,大部分有不同程度的石灰性反应。土壤有机质、全氮、全钾的含量较高,发展粮食生产十分有利。但是,由于地势较低,地下水位高,土壤有效磷、锌含量不足,每年约有三分之一的早稻坐蔸迟发,严重影响高产。为了摸索早稻早发高产的途径,我们在湖北省农科院技术人员的协助下,开展了施用锌肥的试验示范工作,收到了初步效果。
My area is located in the Jianghan Plain. The parent material of paddy soil is mainly modern river alluvial deposits and lake sediments, partly developed in the Quaternary red clay layer. The pH value is generally between 7.5-8.5, most of which have different degrees of calcification. Soil organic matter, total nitrogen, total potassium content is higher, the development of food production is very favorable. However, about one-third of the early rice sit-seeding is late each year due to the low topography, high groundwater level, insufficient soil available phosphorus and zinc, seriously affecting the high yield. In order to explore the early rice early high-yielding ways, we Hubei Academy of Agricultural Sciences technical staff to carry out the pilot demonstration of zinc fertilization work has received initial results.