施氮量对弱筋小麦扬辐麦2号产量和品质调节效应

Effects of nitrogen application amount on grain yield and quality in weak-gluten wheat Yangfumai 2

以弱筋小麦扬辐麦2号为试验材料,研究施氮量对弱筋小麦籽粒产量、蛋白质及其组分含量、淀粉及其组分含量、湿面筋含量的影响。结果表明:在一定施氮量范围内,增施氮肥,籽粒产量、蛋白质和面筋含量提高,淀粉及其组分含量下降;施氮量超过适宜值后,籽粒产量下降,籽粒蛋白质及醇溶蛋白、谷蛋白和面筋含量继续上升,且籽粒蛋白质含量超过弱筋小麦标准;过量施氮,籽粒产量和蛋白质产量均下降,施氮量以172 kg·hm^(-2)左右最为适宜。试验结果初步将弱筋小麦扬辐麦2号的施氮量划分为4个区域,即施氮高效区、产量品质协调施氮区、奢侈施氮区和过量施氮区。

The effects of nitrogen application amount on grain yield and quality in weak-gluten wheat Yangfumai2 indi- cated that grain yield,protein and gluten contents increased with the increase of N application amount at a certain range, but starch content decreased.According to the results,to produce grain more than 6 750 kg·hm^(-2)with protein content less than 115 g·kg^(-2)and gluten content less than 240 g·kg^(-1),the suitable N application amount was about 172 kg·hm^(-2)(nitrogen)for weak-gluten wheat Yangfum...