论文部分内容阅读
为了确定土壤磷的保证率、豆科—禾本科牧场的生产效率与磷肥效应间的依属关系,1977—1979年在全苏饲料研究所进行了专门的试验。规定以人工施磷肥为大田试验的基础。根据苏联土壤肥料研究所和苏联饲料研究所的研究方法测定P_2O_5含量,同时估计到土壤中磷的固定系数(63％),用一次施足工业过磷酸钙的方法作施量标准。试验地段的土壤为生草灰化土,中壤。施石灰后土壤反应接近中性——pH6.O——6.1,100克土壤中含P_2O_6.3——6.6毫克,
In order to determine the soil P assurance rate, leguminous - gramineous pasture production efficiency and dependency between the phosphate effect, 1977-1979 in the Soviet Union Feed Institute conducted a special test. Provisions to artificial phosphate fertilizer for the field test basis. According to the research methods of the Soviet Soil and Fertilizer Institute and the Soviet Feed Research Institute, the content of P 2 O 5 was determined, and the phosphorus fixation coefficient (63%) to the soil was estimated at the same time. Soil in the test site is raw grass ash soil, soil. After the lime soil reaction is nearly neutral - pH6.O - 6.1, 100 grams of soil containing P_2O_6.3--6.6 mg,