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采用最优回归设计方法 ,研究了“黔油 11号”产量与施N ,K量、施P量 ,密度和播期间的关系 ,并建立了回归数学模型。提出了黔油 11号获得 190kg/ 6 6 7m2 以上的优化栽培方案 :施N量为 :6 .72～ 9.5 6kg/ 6 6 7m2 (即尿素用量 14.6 1～2 0 .78kg/ 6 6 7m2 ) ;施K2 O量为 :4.71～ 6 .6 9kg/ 6 6 7m2 (即氯化钾用量 7.85～ 11.14kg/ 6 6 7m2 ;施P2 O5量为 :3.80～ 6 .0 6kg/6 6 7m2 (即通过磷酸钙用量 2 3.72～ 37.87kg/ 6 6 7m2 ) ;密度为 :75 6 6～ 85 18株 / 6 6 7m2 ;播期为 :9月 17～ 2 0日。各因素影响黔油 11号产量的大小为 :播期 >密度 >施氮钾量 >施磷量
The optimal regression design method was used to study the relationship between yield and N, K, application rate, density and sowing date of “Qianyou 11”, and the regression mathematical model was established. The optimal cultivation plan was obtained for more than 190kg / 667m2 of Qianyou 11: application amount of N was: 6 .72 ~ 9.5 6kg / 6 6 7m2 (ie urea dosage 14.61 ~ 2.078kg / 6 6 7m2); The amount of K2 O applied was 4.71-6.69 kg / 6 67 m 2 (that is, the dosage of potassium chloride was 7.85-11.14 kg / 6 6 7 m 2; the amount of P2 O 5 was 3.80-6.06 kg / 6 6 7 m 2 The amount of calcium phosphate 2 3.72 ~ 37.87kg / 6 6 7m2); density: 75 6 6 ~ 85 18 plants / 6 6 7m2; sowing date: September 17 ~ 20 .All factors affect the yield of Qianyou 11 The size is: sowing date> density> amount of nitrogen and potassium fertilizer> phosphorus amount