密度与整枝对抗虫杂交棉产量分布的影响.pdfVIP

山东 农业 科 学 2009, 12: 43~ 47 Shandong Agricu ltural Sciences 密度与整枝对抗虫杂交棉产量分布的影响 * 罗 振, 李维江, 董合忠 , 唐 薇, 张冬梅, 卢合全, 李振怀 ( /, 250100) : 2008 , , 304560 2 75/m 4: , ( 77% ~ 85% ) ( 76% ~ 88% ), ( 15% ~ 23% )( 12% ~ 24% ) , , , ; , , , 112% ; , 194% 180% , , 30 2 75/m 3 249% 89% , , : ; ; ; ; ; : S56201 : A : 100 1- 4942( 2009) 12- 0043- 05 E ffects of D ensity and P lant P runing on Y ield D istribu tion of H ybrid B t Cotton * LUO Zhen, LIW ei- jiang, DONG He- zhong , TANG W ei, ZHANG Dong- me,i LU He- quan, LI Zhen- huai (Cotton R esearch Center, Shandong A cademy of Agricultural Sciences/Shandong K ey Lab f or Cotton Culture and Physiology, J inan 250100, China) Abs tract The multi- site field e permi ent w as conducted in Linqing, Jia iang and Jin iang county of Shandong Province respectively to study the effects of density and plant pruning on distribution of y ield, ratio of sink to source and maturity performance in 2008A sp lit- p lot design w ith three rep lications w as used for the studyThemain plotw as plant pruning ( removal and retention ofVB, wh ile plant density ( 30, 45, 60 2 and 75 p lants/m ) constituted the subp lotsRegardless of plant density or plant prun ing, the y ieldw asm ain ly distributed in the low er and m idd le fru iting branches( FB, 77% ~ 85% ) and the inner fru iting nodes( 76% ~ 88% ), w hile less d istribution w as seen in upper FB ( 15% ~ 23% ) and outer fru iting nodes ( 12% ~ 24% ) Both p lant density and p lant pruning e hibited sign