施肥对敖汉苜蓿鲜草产量及营养成分的影响  

Effects of Fertilizer Application on the Yield of Fresh Forage and Nutrient Content of Aohan Alfalfa

作　　者：范富[1] 张宁[1] 张庆国[1] 邰继承[1] 孙德志[1] 苏雅乐[1] 

机构地区：[1]内蒙古民族大学农学院,内蒙古通辽028043

出　　处：《中国草地学报》2007年第5期36-42,共7页Chinese Journal of Grassland

基　　金：内蒙古自然科学基金资助项目(20050810416)

摘　　要：2003年在内蒙古西辽河平原灰色草甸土上采用"3414"二次回归最优设计试验方案,研究N、P、K肥配施对敖汉紫花苜蓿当年产草量和营养成分的影响。结果表明:在施N 16.59kg/hm2、施P2O548.92kg/hm2、施K2O283.79kg/hm2时可获得鲜草最高产量66464kg/hm2。14个处理组合中,初花期以处理9(N2P2K1)、处理1(N0P0K0)、处理5(N2P1K2)粗蛋白质的含量高;初花期的粗纤维含量小于25.0%的处理组合是处理6(N2P2K2)、处理7(N2P3K2)、处理11(N3P2K2)、处理12(N2P1K1),均达到国家一级标准[6];初花期粗灰分含量处理8(N2P2K0)最低;还分析了N、P、K肥对敖汉苜蓿营养成分的影响。The effects of applying nitrogen, phosphorus, potassiumfertilizer on the fresh forage yield and nutrient content of Aohan alfalfa（Medicago sativa cv. Aohan） in the sowing-year by using three factors saturated optimum design on gray meadow soil of west Liao- river plain of Inner Mengoulia Autonomous Region in 2003. The results showed that the optimum combination of N,P,K was N：16.59kg/hm^2 ,P2O5. 48. 92kg/hm^2 ,K2O： 283.79kg/hm^2 , and gained 66464kg/hm^2 the fresh forage yield. At early blooming stage , the contents of crude nitrogen in the treatment 9, treatment 1 and treatment 5 were higher than other treatments; and the contents of crude fiber was less than 25% in the treatment 6, treatment 7, treatment 11 and treatment 12; and the content of crude ash in the treatment 8 was lowest in the 14 treatments. Effects of the nitrogen, phosphate and potassium application on the nutrient content of Aohan alfalfa were discused.

关 键 词：施肥 营养成分 产量 紫花苜蓿 

分 类 号：S541[农业科学—作物学]