化控在水稻中位蘖优势利用中的应用研究初报  

A Study on Application of Chemical Regulation in the Medium - tiller Superiority of Rice

作　　者：鲁雪林 周汉良 马素芬 

机构地区：[1]河北省稻作研究所,唐海063200

出　　处：《河北农业科学》1998年第1期30-32,共3页Journal of Hebei Agricultural Sciences

基　　金：河北省自然科学基金

摘　　要：本研究采用植物生长调节剂在缓秧后对水稻进行茎叶处理,结果表明:喷施适当浓度的2,4—D,可增产497.1kg/hm^2,增产率为6.22％,同时加入NAA,成穗数则下降,会降低增产效果甚至减产。增产因素主要是增加了每穗实粒数。本研究证实,水稻移栽后采用化控技术可控下位蘖,促中位蘖,出壮蘖,成大穗,为水稻中位蘖优势利用栽培技术拓宽了适用范围。In this paper, we treated the stems and leaves of rice with plant growth regulator after rice reviving stage. The result showed that spraying 2,4 - D at an appropriate concentration could increase the yield by 497. lkg/hm2, which is 6. 22% higher than that of control. Adding NAA in same times could reduce ear number and decrease the yield increasing effect even reduce the yield. The main reason of the yield increase is that it increased the grain number per ear. This research concluded that chemical regulation after rice transplant could control the lower -tillers, promotes the medium - tiller, forms strong tillers and big panicles, which enlarged the scope of utilization of medium - tiller superiority of rice.

关 键 词：水稻 植物生长调节剂 控下位蘖 增产 

分 类 号：S511.06[农业科学—作物学]