水稻中位蘖的分蘖规律与生产力研究  

Studies on Tiller Regularity of Middle Tillering Part and Productive Forces of Rice

作　　者：周汉良 鲁学林 郑秋玲 

机构地区：[1]河北省稻作研究所,河北唐海063200

出　　处：《华北农学报》2000年第2期112-117,共6页Acta Agriculturae Boreali-Sinica

基　　金：河北省自然科学基金资助

摘　　要：以冀粳 14号的主茎和不同蘖位 1～ 4次分蘖为材料 ,研究了水稻中位蘖的分蘖规律与生产力。结果证实 ,中晚熟水稻品种主茎有两个蘖位转折期 ,依此将主茎蘖位划分为下、中、上 3部分 ;水稻主茎 3～n - 1蘖位为中部蘖位。在中位蘖中 ,主茎n蘖位上一次分蘖与主茎n - 2蘖位下一次分蘖具有n - 2的蘖、蘖同伸规律 ,即纵向上主茎每长 2片叶 ,横向上分蘖次数增加 1次的规律 ,在所有 1次分蘖中 ,n - 1和n - 2蘖位 1次分蘖生产潜力最大 ;在所有 2次分蘖中n - 3和n - 4蘖位 2次分蘖生产潜力最大 ;在所有 3次分蘖中n - 5和n - 6蘖位 3次分蘖生产潜力最大 ;合理利用中位蘖优势具有 14Studies on tiller regularity of the middle tillering part and productive forces of rice with main stem and different tilleres of 1 4 tillering part of rice variety Gigeng 14 were carried out .The results showed that there were two tiller turning points on the main stem of middle or late maturing rice variety.The main stem was divided into the below,the middle and the upper three partes.The tillering part of main stem 3-n 1 means the middle tillering part.In the middle tillering part,up one grade tillering of the main stem n part and below one grade tillering of the main stem n 2 part follow stretching regularity of n 2 tillering and tillering.During main stem grows two leaves at vertical tillering grade increases one grad at crosswise.1st grad tillering of n 1 and n 2 tillering part have the biggest productive potential in all 1st grad tillering ;2nd grade tillering of n 3 and n 4 tillering part have the biggest productive potentialities in all 2nd grade tillering ;3rd grade tillering of n 5 and n 6 tillering part have the biggest productive potentialities in all 3rd grade tillering.Therefore if superiority of the middle tillering part is utilized rationally,there will be 14.9% potential of increase yield.

关 键 词：水稻 中位蘖 分蘖规律 生产力 增产潜力 

分 类 号：S511.01[农业科学—作物学]