大麦新品系F0797高产栽培模式研究

Studies on Cultural Pattern with High Yield for the New Barley Variety "F0797"

采用二次回归通用旋转组合设计方法,对大麦新品系F0797在四川德阳地区的最佳栽培技术模式进行了研究,建立了播种量（X1）、播种期（X2）、磷肥用量（X3）、氮肥用量（X4）与产量的数学回归模型：Y=469.286-5.486X1-3.125X2-2.015X3＋44.235X4-9.040X12-12.374X22＋1.376X32-7.165X42＋15.938X1X2-6.146X1X3-9.479X1X4＋10.729X2X3-5.522X2X4-5.103X3X4。显著性检验表明该模型拟合较好,可靠程度较高。对该模型解析显示,F0797产量≥450 kg/667 m2的优化农艺措施组合方案为：播种量14~15 kg/667 m2,播期11月3~5日,P2O5用量9~11 kg/667 m2,纯氮用量12~13 kg/667 m2。四个参试因素中,以氮肥对产量的贡献最大,其次是播种量、播种期,磷肥对产量的影响相对较小。

A best cultural pattern in Deyang region of Sichuan province, China for high yield of a new barley variety ＂F0797＂Y=469.286-5.486X1-3.125X2-2.015X3＋44.235X4-9.040X12-12.374X22＋1.376X32-7.165X42＋15.938X1X2-6.146X1X3-9.479X1X4＋10.729X2X3-5.522X2X4-5.103X3X4, was established by way of general rotational combination design involving the 4 factors of the quantity of sowing （ X1 ）, sowing time （X2） , phosphorus （X3） and nitrogen （X4） . The significant test indicated that this pattern showed better goodness of fit and higher reliability. The optimized combination plan of cultural measures for yield of the variety ＂F0797＂ ≥450 kg/667 m2 under Deyang region of Sichuan province, China was： 14 - 15 kg/667 m2 for the quantity of sowing, November 3 -5 for sowing time, 9 - 11 kg/667 m2 for P205 and 12 - 13 kg/667 m2 for pure nitrogen. In the four factors, nitrogen fertilizer had the biggest effect on yield, then the quantity of sowing, sowing time, whereas phosphorus had smallest effect on yield.