氮肥、磷肥、密度对小麦产量和品质的影响

采用旋转回归通用组合设计,研究了密度、氮肥、磷肥对产量和品质的影响,结果表明:控制基部第一、二节间的伸长,使其粗壮,有利于培育大穗,提高籽粒产量和蛋白质含量。用计算机模拟寻优结果,“农鉴1号”在江淮地区亩产大于350kg、蛋白质含量大于14％的适宜栽培条件为密度12.5—13.3万/亩;施纯氮14.4—15.2kg/亩;施P_2O_52.8—4.9kg/亩。

INFLUENCE ON WHEAT YIELD AND QUALITY OF NITROGEN,PHOSPHORUS FERTILIZER AND DENSITY

The experiment was conducted to study the effect on wheat yield andquality by using the design of rotational regressive general combination.The results show that the extension of node at basal No.1 and No.2 wascontrolled to make them thick and strong, which was beneficial to raisinggrain yield and improving grain protein content .With computer's simulation,the comprehensive farming practice for yield 350 kgmu~(-1) and grain proteincontent 14% with the variety' Nongjian No. 1' was density of 125 to 133thousand mu~(-1) N--fertilizer rates at 14.4 to 15.2 kgmu~(-1) and P--fertilizerrates at 2.8 to 4.9 kgmu~(-1) in Jianghuai Area.