辽宁大豆施肥指标体系研究

Study on Fertilization Index System of Soybean in Liaoning Province

在辽宁地区进行 2 a 的"3414"田间试验,以初步掌握辽宁地区大豆的土壤养分情况。试验结果表明:辽宁种植大豆的土壤肥力基本属于中等水平; 全省大豆推荐最高产量施肥量为 N2.33 kg/667 m2、P2O52.42 kg/667 m2、K2O4.04 kg/667 m2, 最高产量为181.27 kg / 667 m2;以"对数"类型获得相对产量与对应土壤养分测试值之间的数学关系式,分别取相对产量 50%、75%、85%和 95%计算土壤养分含量,得出全省大豆土壤养分丰缺指标。

A field experiment of two years, namely, ＂3114＂ was conducted in Liaoning area to study the soil nutrients in soybean fields in Liaoning province. The findings show that the soil fertility in soybean fields in Liaoning province is at an intermediate level; the highest recommended fertilization for the whole province is as follows： N=2.33 kg / 667 m2、P2O5=2.42 kg / 667 m2、K2O=4.04kg / 667 m2; and the highest yield is 181.27 kg / 667 m2. The mathematical relations between the relative yield and the correspondent soil measured nutrients was obtained. The plentiful-lack index system of soybean soil nutrients in Liaoning province was established based on the calculation of correspondent soil nutrient contents when the fractional yield is at 50%、75%、85%和 95% respectively.