栽培措施对泛麦5号产量的影响

Effect of different cultural practice to production and quality of Fanmai 5

通过旋转回归试验探讨播期、播量、施氮量、施磷量、施钾量5因子对泛麦5号产量的影响,结果表明：播期推迟,产量明显提高,但至10月20日达最大值;随播量增加,产量略增加,至150×104株/hm2基本苗,产量最高;随施氮量增加,产量极显著地提高,至600 kg/hm2时达最大值;随施磷量、施钾量增加,产量明显增加,但磷肥效应大于钾肥效应.最高产量10 684.17 kg/hm2的各因子组合为10月5日播种,75×104株/hm2基本苗,施尿素750 kg/hm2,施过磷酸钙1 500 kg/hm2,施硫酸钾600 kg/hm2.产量大于9 000 kg/hm2的方案有334个,因子的取值为播期10月14-15日,基本苗（159.9~178.2）×104株/hm2,施尿素525.15~565.2 kg/hm2,施过磷酸钙1 191.0~1 272.3 kg/hm2,施硫酸钾450.0~484.5 kg/hm2.

By the retational regression study of five factors （sowing date,seeding rate,nitrogen,phosphorus,potassium） in Fanmai 5 indicated that,as sowing date delayed production increased significantly and reached maximum value when sowing date was October 20th,but production reduced when sowing date was after October 20th.As population increased,production increased significantly,and as nitrogen increased,production increased significantly also,and reached maximum value when amount of nitrogen was 600 kg/hm2,then production decreased as nitrogen increased. As phosphorus and potassium increasing, production increased significantly, but effect of phosphorus is higher than effect of potassium.The optimum factor combination of the maximum yield （ 10 684.17 kg/hm2） is sowing on October 5th, sowing rate with 75 × 10^4 plants/hm2,nitrogen with 750 kg/hm2,phosphorus with 1 500 kg/hm2,and potassium with 600 kg/hm2.The factor combination of 344 designs with yield above 9 000 kg/hm2 is sowing on October 14th to 15th, sowing rate with 159.9 × 10^4 to 178.2 × 10^4 plants/hm2,nitrogen with 525.15 to 565.2 kg/hm2,phosphorus with 1 191.0 to 1 272.3 kg/hm2,and potassium with 450 to 485.5 kg/hm2.