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采用五元二次回归正交旋转组合设计,研究了密度、氮肥、磷肥、钾肥及追肥时期对小麦新品种绵阳30号的产量效应。结果表明,氮肥对产量达极显著水平,是影响产量的主要因素;磷钾肥、密度与追肥时期对产量影响较小,均未达到显著水平。五因素对产量的影响顺序为:氮肥、磷肥、追肥时期、密度、钾肥。同时得到,在川西麦区绵阳30号获得高产(产量大于7500kg/hm~2)的具体栽培技术措施为:密度为156.6～183.0万/hm~2基本苗,纯氮量159.3～166.95kg/hm~2,P_2O_5用量137.625～144.375kg/hm~2,K_2O用量216.75～244.5kg/hm~2,追肥时期以拔节期或孕穗期为宜。同时通过播期试验得出绵阳30号的最适播期为10月20日至11月1日。
The quadratic regression quadratic rotation combined design was used to study the effects of density, nitrogen fertilizer, phosphate fertilizer, potassium fertilizer and dressing period on the yield of a new wheat variety Mianyang 30. The results showed that nitrogen fertilizer had an extremely significant effect on the yield, which was the main factor affecting the yield. However, the effect of phosphorus and potassium fertilizer, density and top dressing time had little effect on the yield, and did not reach the significant level. Five factors on the yield of the order: nitrogen, phosphate fertilizer, top dressing, density, potash. At the same time, the specific cultivation techniques for high yield (> 7500kg / hm ~ 2) in Mianyang 30 in the west of Sichuan were as follows: the density was 156.6-1.83 million / hm ~ 2 and the pure nitrogen was 159.3-166.95 kg / hm ~ 2, the dosage of P 2 O 5 was 137.625 ~ 144.375kg / hm ~ 2, the dosage of K_2O was 216.75 ~ 244.5kg / hm ~ 2. The topdressing stage or booting stage was suitable. At the same time, the optimum sowing date of Mianyang 30 was obtained from sowing date test from October 20 to November 1.