北疆棉区打顶调控棉纤维生态位适宜度的研究  

Study on Cotton Fiber Niche-fitness by Different Topping Regulation in North Xinjiang

作　　者：程海涛[1] 马富裕[1] 慕彩芸[1] 

机构地区：[1]石河子大学农学院/新疆兵团绿洲生态农业重点实验室,新疆石河子832003

出　　处：《中国农学通报》2005年第2期272-275,共4页Chinese Agricultural Science Bulletin

基　　金：国家自然基金项目(30160021);石河子大学自然科学基金资助项目(2011)。

摘　　要：以北疆高产棉田棉纤维作为研究对象,引入生态位适宜度理论,对三个打顶次数不同的处理的棉花群体棉纤维生态位适宜度进行分析研究,结果表明:用生态位适宜度来评价棉纤维品质是切实可行的,三个打顶处理中7月10日和7月25日打顶棉株棉纤维生态位适宜度均为中部最高,并且随着棉花群体打顶次数的增加,其下部棉纤维生态位适宜度较上部有逐渐增高的趋势,与一次打顶相比较,其二、三次打顶棉株上、下部棉纤维生态位适宜度均升高。二、三次打顶处理中的6月25日打顶棉株棉纤维生态位适宜度最大值所在部位上移至棉株上部。By taking cotton fiber in high yield cotton field of north Xinjiang as the object, the niche-fitness theory were introduced, through analysis the niche-fitness of cotton fiber in three mono-topping and multi-topping intercrop system treatment, the result showed, it is acceptable that evaluate cotton fiber quality by niche-fitness, the niche-fitness value of cotton fiber at the middle part of the cotton plant is the biggest that topping inJul.10th and Jul.25th in this three treatment, moreover, with the increase of topping times, compare with it's top part of cotton plant, the niche-fitness of cotton fiber at the low part of cotton plant have a raise tendency, the niche-fitness value of top and low part of cotton plant in multi-topping treatment is bigger than what of mono-topping. The position of biggest niche-fitness value of cotton fiber, which is topped in June 25th in multi-topping treatment move up to top.

关 键 词：打顶 棉株 生态位 北疆棉区 棉花 高产 群体 适宜度 中部 增加 

分 类 号：S562[农业科学—作物学] F812[经济管理—财政学]