黑龙江垦区大豆变量施肥播种应用试验

Application test of soybean sowing by variable fertilization seeder in Heilongjiang reclamation areas

为了验证大豆变量施肥播种作业的可行性与适应性,2003年在黑龙江省友谊农场五分场二队2号地使用美国凯斯(CASE)公司生产的ST820型空气输送式变量施肥播种机进行大豆变量施肥播种应用试验。作业前进行土壤取样化验,根据土壤养分化验结果及生产经验进行变量施肥播种决策,采用AFS软件生成变量施肥处方数据,并用于大豆变量施肥播种作业。试验结果表明,大豆变量施肥播种在技术上是可行的,但由于变量施肥播种机采用整体仿形,作业幅宽大,要求土地平整,否则各行播种深度将有一定的差异,影响大豆出苗的一致性。

In order to validate the feasibility and adaptability of planting soybean with the variable fertilization seeder, the application test of soybean sowing by ST820 air-transported variable fertilization seeder made by CASE company in America was carded out at No.2 field of No.2 brigade in No.5 branch of Youyi Farm in 2003. Before working, soil was sampled and tested. Variable rate fertilization and sowing were performed according to the testing results of soil nutrient and production experience. Then prescription data of variable rate fertilization were generated by AFS software and applied to soybean sowing work. The test result indicates that soybean sowing by variable fertilization seeder is technically available. But the variable fertilization seeder adopts whole profile modeling, and its working width is large, so the field must be level, otherwise planting depths are different from each other, which has an effect on the accordance of soybean emergence.