春小麦高产高蛋白氮磷钾锌肥用量及配比研究

Rational application rates of nitrogen,phosphorus,potassium,zinc fertilizers and their combining proportion in spring wheat with both high grain yield and high protein contents

在中等肥力土壤条件下,采用416-A混合设计方法,进行了宁夏灌区春小麦氮、磷、钾、锌肥最佳用量及其配比的田间试验,并对小麦产量、蛋白质产量与氮磷钾锌肥用量之间的函数关系进行了模拟,得出了小麦最高产量、最高蛋白质产量和维持较高蛋白质含量(大于13.5%)的N、P2O5、K2O、Zn的最佳用量及其配比。综合分析认为,欲使蛋白质产量达最高,即产量和蛋白质含量兼优,施氮量以22 kg/666.67 m2为宜,N∶P2O5∶K2O适宜比例为1∶0.45∶0.19。

Field experiment with testing analysis was conducted to study the optimum applying rates of nitrogen, phosphorus, potassium, zinc fertilizers and their combining proportions in spring wheat with both high grain yield and high protein contents by a 416 - A mixed design under the used soil with medium fertility. The two target function models between wheat grain yield, protein contents and the application rates of nitrogen, phosphorus, potassium, zinc fertilizers were probed, the optimum application rates of nitrogen, phosphorus, potassium, zinc fertilizers and their rational ratios for maximum yield, maximum protein yield and higher protein contents （i. e. more than 13.5 % ） have been obtained. It was considered by integrated analysis that the optimum rates of nitrogen fertilizer is about 22 kg/666.67m^2, the most suitable ratios of N ： P2O5 ： K2O range from 1 ： 0.45 ： 0.19, which may get the maximum of protein yield, i.e. both yield and protein contents are better.