氮肥用量與施用方法對(duì)土壤養(yǎng)分與小麥生長的影響
[Abstract]:[objective] to explore the optimum application rate and reasonable application method of wheat nitrogen fertilizer. [methods] the field experiment of reducing the amount of nitrogen fertilizer and the effects of different application methods on soil nutrients and wheat growth was carried out. [results] A certain amount of nitrogen fertilizer was reduced. The contents of ammonium and nitrate in the soil layer of 20 cm in the seedling stage of wheat did not decrease significantly, but had no significant effect on the available phosphorus and available potassium in the soil of the seedling stage of wheat, but the effect of reducing a certain amount of nitrogen fertilizer on the chlorophyll content of wheat was not significant. The effect of reducing a certain amount of nitrogen fertilizer on the growth nitrogen content of wheat was not obvious, but it decreased the nitrogen content of wheat grain and straw, and had no obvious effect on the content of phosphorus and potassium. [conclusion] considering from the angle of economy and environment, It is feasible to reduce the application of 20% nitrogen fertilizer.
【作者單位】: 農(nóng)業(yè)部廢棄物肥料化利用重點(diǎn)實(shí)驗(yàn)室湖北省農(nóng)業(yè)科學(xué)院植保土肥研究所;湖北省赤壁市農(nóng)業(yè)局;湖北省廣水市農(nóng)業(yè)局;
【基金】:國家重點(diǎn)研發(fā)計(jì)劃項(xiàng)目(2016YFD0200109) 國家重點(diǎn)基礎(chǔ)研究發(fā)展規(guī)劃(973計(jì)劃)項(xiàng)目(2013CB127400) 農(nóng)業(yè)部公益性行業(yè)(農(nóng)業(yè))科研專項(xiàng)(201003016,201203030) 湖北省農(nóng)業(yè)創(chuàng)新中心專項(xiàng)資金項(xiàng)目(2016-620-003-03) 湖北省農(nóng)業(yè)科學(xué)院重大研發(fā)成果培育項(xiàng)目(2017CGPY01)
【分類號(hào)】:S158;S512.1
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