氮、磷、钾肥配施对威宁地八角产量的影响

Effects of Combined Application of N,P and K Fertilizers on Astragalus bhotanensis Yield

为了促进威宁地八角的推广应用和提高其种子产量,2010—2011年采用二次正交旋转回归设计方法研究了N、P2O5、K2O肥料因子对威宁地八角种子产量的影响。结果表明,1)N、P2O5、K2O单因子肥料对种子产量影响的大小顺序为钾肥>磷肥>氮肥,两因子互作以氮肥与磷肥、氮肥与钾肥的效果显著。2)在施用氮肥13.04kg/667m2、磷肥88.24kg/667m2、钾肥32.00kg/667m2时,威宁地八角种子的产量最高,为31.90kg/667m2,其经济效益也最大。

The quadratic regression orthogonal rotation design was used to study the relationships between seed yield of A.bhotanensis and three fertilizer factors（nitrogen,phosphate,potash fertilizer） in 2010-2011,so as to promote the generalization and application of A.bhotanensis and enhance its seed yield.The results indicated that the order of the impact of various factors to the seed yield was potash fertilizerphosphate fertilizernitrogen fertilizer.The analysis of two-factor interaction effects showed that the interaction between nitrogen fertilizer and potash fertilizer,nitrogen fertilizer and phosphate fertilizer were more significant.Optimum conditions of cultivation for seed of A.bhotanensis were nitrogen fertilizer 13.04 kg/667m2,phosphate fertilizer 88.24 kg/667m2 and potash fertilizer 32.00 kg/667m2,the yield could be high up to 31.90 kg/667m2 and the economic benefit was the highest too.