紫花苜蓿与无芒雀麦混播草地组分及产量变化动态  

Dynamic Changes on the Components and Yield of Mixed Grassland of Alfalfa and Bromus Inermis

作　　者：刘兰芳[1] 杨恒山[2] 张宏宇[1] 张丽妍[2] 

机构地区：[1]通辽市农业局,内蒙古通辽028000 [2]内蒙古民族大学农学院,内蒙古通辽028042

出　　处：《内蒙古民族大学学报（自然科学版）》2009年第4期403-405,共3页Journal of Inner Mongolia Minzu University：Natural Sciences

基　　金：内蒙古自然科学基金(200508010316);内蒙古自治区人才开发基金(20065-25)

摘　　要：2006～2008年在地处西辽河平原的内蒙古民族大学实验农场对1年生、2年生、3年生紫花苜蓿与无芒雀麦混播草地草产量及其组分变化动态进行了研究.结果表明,随着生长年限的增加,紫花苜蓿和无芒雀麦株高标准差增加,整齐度降低;混播组分中紫花苜蓿所占的比例增加,无芒雀麦所占比例减小;1年生混播草地中,第1茬无芒雀麦草产量高于紫花苜蓿,第2茬紫花苜蓿草产量高于无芒雀麦;2年生、3年生混播草地中,第1茬、第2茬、第3茬紫花苜蓿草产量均高于无芒雀麦.从年总草产量来看,紫花苜蓿与无芒雀麦混播草地的草产量随生长年限的增加而增加.The study on the dynamic changes on the components and yield of grassland of Alfalfa and Bromus inermis was carried on one-year,two-year and three-year alfalfa on a experimental farm of the Inner Mongolia University for Nationalities in Xiliaohe Plain in 2006～2008.The results showed that： with the increase of growing year,the standard deviation of plant height of alfalfa and Bromus inermis increased,uniformity decreased;Alfalfa accounts for proportion increased among component of mixed sowing,Bromus inermis accounts for proportion decreased;Among mixed Grassland of one-year Alfalfa and Bromus inermis,the Bromus inermis yield of the first stubble was higher than Alfalfa,but the Alfalfa yield of the first stubble was higher than Bromus inermis;Among mixed Grassland of one-year and three-year Alfalfa and Bromus inermis,the Alfalfa yield was higher than Bromus inermis in the first stubble,the second stubble and the third stubble.With the increase of growing year,the grass yield of grassland of Alfalfa and Bromus inermis increase.

关 键 词：紫花苜蓿 无芒雀麦 草产量 组分变化 

分 类 号：S541[农业科学—作物学]