红菜薹“3415”肥效试验研究

以"十月红"红菜薹品种为材料,采用二次回归"3415"试验设计方案,研究氮、磷、钾3种肥料的施肥量对红菜薹产量的影响。结果表明,与对照相比,各配方施肥处理红菜薹的产量均有所提高;从拟合的红菜薹氮、磷、钾肥料效应三元二次回归模型Y=1169.93+42.91 N+71.7 P-5.65 K-1.65 N2-3.63 P2-3.12 K2-1.56 NP+2.55 NK+2.62 PK分析,在施有机肥2 000 kg/667 m2的基础上,确定该区域最大施肥量为纯氮15.76 kg/667 m2、五氧化二磷9.97 kg/667 m2及氧化钾9.72 kg/667 m2,预测最高产量1 838.21 kg/667 m2;生产上红菜薹最佳N、P2O5、K2O配比为1︰0.63︰0.61。

“3415”Fertilizer Efficiency Experiments in Hongcaitai

This experiment, with a hongcaitai variety Shiyuehong used as materials, was designed as a quadratic regression ＂3415＂ test to determine the effect of nitrogen, phosphorus and potassium fertilizer on yield of the hongcaitai. The results showed that each of all formula-fertilization treatments could increase the hongcaitai yield, as compared with the CK; the ternary quadratic regression model for the N, P and K fertilizer effect on the hongcaitai yield was as follows： Y=1169.93 ＋ 42.91 N ＋ 71.7 P- 5.65 K- 1.65 N2- 3.63 P2- 3.12 K2- 1.56NP ＋ 2.55 NK ＋ 2.62 PK; with the organic fertilizer rate of 2 000 kg per 667 m2as base manure, the maximum amount of additional fertilizer application per unit area in the region should be 15.76 kg pure nitrogen per 667m2, 9.97 kg P2O5per 667 m2and 9.72 kg K2O per 667 m2, so the highest yield of the hongcaitai could be predicted up to 1 838.21 kg per 667 m2; and the optimum ratio of N, P and K for the hongcaitai production should be 1︰0.63︰0.61.