直播稻主茎分蘖生产力的研究  

Study on the Grain Productivity of the Direct-seeding Rice

作　　者：周青[1] 夏燕[1] 王华学[1] 

机构地区：[1]江苏省淮阴工学院农业工程与食品工程系,江苏淮安223001

出　　处：《安徽农业科学》2002年第4期546-548,共3页Journal of Anhui Agricultural Sciences

摘　　要：通过微区试验 ,研究了直播水稻在不同栽培密度条件下主茎不同叶位分蘖籽粒的生产力。结果表明 :3种密度下直播水稻的中部蘖位优势 >下部蘖位 >上部蘖位 ,中部分蘖的籽粒生产力较高。要获得高产必须在充分利用下部蘖位成穗的基础上 。The grain productivity of direct seeding rice was studied in the different densities through mini area test. The results indicated that the productivity of the tillering modes in different parts of the stem existed difference. The productivity in the middle part was first, then in port the lower and finally in the upper part. That meant the productivity of the tillering node in the middle of the stem occupied a dominant position compared with the others. It is necessary to bring the potential of superior tillering node to increase production, based on applying the planting density rationally.

关 键 词：主茎 分蘖 生产力 直播 水稻 

分 类 号：S511[农业科学—作物学]