半干旱区旱地莜麦宽幅匀播肥料效应试验初报

Report on Fertilizer Effect of Wide and Uniform Sowing of Hulless Oat in Semi-arid Areas

为了研究莜麦宽幅匀播肥料效应,为莜麦宽幅匀播栽培技术大面积推广应用提供理论依据,进行了半干旱区旱地莜麦宽幅匀播肥料效应试验。结果表明:莜麦宽幅匀播技术能显著提高氮、磷、钾肥料利用效率,氮、磷、钾肥利用效率增长率均高于常规条播。莜麦宽幅匀播缺氮区相对产量为85.08%,较常规条播低1.78个百分点;缺磷区相对产量为87.34%,较常规条播低8.5个百分点;缺钾区相对产量为97.23%,较常规条播低0.71个百分点。宽幅匀播氮的施肥依存度为14.92%,常规条播氮的施肥依存度为13.14%,宽幅匀播磷的施肥依存度为12.66%,而钾的施肥依存度2个处理的依存度仅2%左右。因此,该区域大田缺氮、少磷、富钾。

In order to test and study the fertilizer effect of wide and uniform sowing of hulless oat, in order to provide a theoretical basis for the popularization and application of "wide and uniform sowing cultivation technology of hulless oat" in a large area. The results showed that the technology of wide and uniform sowing of hulless oat could significantly improve the efficiency of nitrogen,phosphorus and potassium fertilizer use, agricultural efficiency. The growth rate of nitrogen, phosphorus and potassium fertilizer use efficiency was higher than that of conventional drilling. The relative yield of hulless oat was 85.08% in the nitrogen deficient area with wide uniform sowing, 1.78 percentage points lower than that of conventional drilling. The relative yield of phosphorus deficient area was 87.34%, 8.5 percentage points lower than that of conventional drilling. The relative yield of potassium deficient area was 97.23%, 0.71% lower than that of conventional drilling. The dependence of fertilization for wide uniform sowing of nitrogen is14.92%, that for conventional drilling of nitrogen is 13.14%, that for wide uniform sowing of phosphorus is 12.66%, and that for potassium is only about 2%. Therefore, the field in this region is short of nitrogen, low in phosphorus and rich in potassium.