培矮64S/E32叶色调控高产攻关  

The Regulation of Leaf Color of Rice Combination-Peiai 64S/E32 for its High Yield

作　　者：方兴龙[1] 董胜桃[1] 何爱青[1] 吴萍[1] 赵决建[1] 金四九[1] 黄俊[1] 

机构地区：[1]安徽省桐城市农业技术推广中心,桐城231400

出　　处：《安徽农业科学》2001年第3期286-288,共3页Journal of Anhui Agricultural Sciences

摘　　要：发展高产优质的单季稻比种植双季稻减少复种指数 ,减轻劳动强度。但单季稻一般比双季稻产量低 ,因此实行单季稻叶色调控高产攻关 ,探索种植高产优质的培矮 6 4S/E3 2 (单季稻 ) ,达到或超过双季稻产量 ,以提高水稻生产的经济效益。研究结果表明 :培矮 6 4S/E3 2分蘖末期、孕穗中期、始穗期的最佳叶色级分别为 4.8、5 .5、6 .0。叶色在最佳叶色级时追肥量(kg/hm2 ) :分蘖末期N 86 .5 ,孕穗中期N 96 .7、K2 O 10 0 .8,始穗期N 3 5 .4、K2 O 18.2。叶色与最佳叶色级不一致时调整施肥量以达到高精度的施肥标准。大田运用叶色调控施肥 ,稻谷产量高达 13 82 7kg/hm2 ,比常规施肥增产 40 .4%。The index of multiple cropping and labour intension were reduced through the development of single season rice with high yield and good quality compared with the double season rice. The regulation of leaf color of rice combination-Peiai 64S/E32 as single season rice growth was researched for high yield and efficiency. The experimental result showed the best standard of leaf color in the late tillering, middle booting and heading stage was 4.8, 5.5 and 6.0 respectively. In the best standard of leaf color, the fertilizer applied was: pure N:86.5 kg/hm 2 in the late tillering stage; pure N 96.7 kg/hm 2 and K 2O 100.8kg/hm 2 in the middle booting stage and pure N:35.4 kg/hm 2 and K 2O 18.2 kg/hm 2 in the heading stage. Thus, the best standard of leaf color can be reached through the application of fertilizer.The measure can promote the increase of rice yield, as high as 13 827 kg/hm 2,which was 40% more than that in general cultivation techniques.

关 键 词：叶色调控 叶色级 施肥 产量 适肥 培矮64S/E32水稻 

分 类 号：S511[农业科学—作物学]