施肥对苜蓿阿尔冈金鲜草产量及营养成分的影响  

The Effects of N,P,K Mixed Fertilizing on Fresh Forage Yield and Nutriention of Argangjin 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：《华北农学报》2008年第4期184-189,共6页Acta Agriculturae Boreali-Sinica

基　　金：内蒙古自然科学基金资助项目(20050810416)

摘　　要：为建植高产优质苜蓿草地提供科学依据,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肥配施对紫花苜蓿(Medicago sativa)阿尔冈金当年鲜草产量和营养成分的影响,结果表明:施N 3.37 kg/hm2,施P2O555.61 kg/hm2,施K2O 256.63 kg/hm2时可获得鲜草最高产量77 944 kg/hm2。14个处理组合中,初花期以处理8(N2P2K0)、处理10(N2P2K3)粗蛋白的含量高;初花期的粗纤维含量小于25.0%的处理组合是处理7(N2P3K2)、处理8(N2P2K0),均达到国家一级标准[1];初花期粗灰分含量处理8(N2P2K0)最低;此项研究可为通辽地区种植阿尔冈金提供合理的施肥方案,在增产的基础上获得优质牧草。Using 3414 quadratic regression optimum design, the effects of N, P, K mixed fertilizing on fresh forage yield and nutriention of Argangjing alfalfa（ Medicago sativa cv. Argangjing）was studied in gray meadow soil of West Liao Rever Plain of Inner Mengoulia Autonomous Region in 2003. The result showed that the optimum combination of N, P, K was N： 3.37 kg/hm^2, P205：55.61 kg/hm^2, K20：256.63 kg/hm^2 and the fresh forage yield of alfalfa was 77 944 kg/hm^2. In the 14 treatments, the contents of crude nitrogen of treatment 8 and treatment 10 were higher, and the contents of crude fiber in the treatment 7 and treatment 8 were low down 25 % at early blooming stage and the contents of crude protein and crude fiber reached the 1st level of the state＇s standards. The content of crude ash was lower in the treatment 8 at early blooming stage. This study gived a rational fertilizing program for planting Argangjing alfalfa in the Tongliao area , achieving high quality forage on the basis of increase yield.

关 键 词：施肥 营养成分 产量 紫花苜蓿 

分 类 号：S551.7[农业科学—作物学]