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我区贺兰山东麓新灌区的沙质淡灰钙土种植历史短,熟化程度低,含有机质少,保肥保水差,土壤肥力和生产能力低。通过几年的大豆栽培试验,如1983年在南梁农场二队和种子队分别获得了每亩538.9斤(2亩)及507斤(1.5亩)的产量,初步认为该地区适宜种植大豆,而且大豆亩产可以突破400斤。在总结以往经验的基础上,初步拟订了一套相应的栽培技术,并于1984年设置了1.93亩的综合高产试验田,亩产达到434.4斤。试验田土壤为典型的沙质淡灰钙土。前
The sandy irrigated area of fresh irrigated area in the eastern part of Helan Mountain in our district has a short history of cultivation, low degree of maturation, low organic matter content, poor water retention and fertility, low soil fertility and low productivity. After several years of soybean cultivation experiments, for example, the output of 538.9 kg (2 mu) and 507 kg (1.5 mu) per acre was obtained respectively from No.2 team and the seed team of Nanliang Farm in 1983, which is initially believed to be suitable for planting soybean in the area, and Soybean yield can break 400 pounds. On the basis of summing up past experience, a set of corresponding cultivation techniques has been initially formulated. In 1984, a comprehensive and high-yield experimental field of 1.93 mu was set up, with a yield of 434.4 kg per mu. The soil in the experimental field is a typical sandy bright-gray soil. before