强化栽培体系(SRI)对杂交水稻群体分蘖的影响  

Effects of SRI on Population Tiller of Hybrid Rice

作　　者：陈仙祥 陈明霞 黄新 杨忠热 黄永林 胡光兰 蒙光 

机构地区：[1]贵州省三都县普安镇农业服务中心,三都558104 [2]贵州省三都县农业局农技站,三都558100 [3]贵州省三都县廷排镇农业服务中心,三都558111

出　　处：《贵州农业科学》2005年第1期28-30,共3页Guizhou Agricultural Sciences

摘　　要：采用农业系统原理和方法,建立数学模型,分析了SRI栽培技术对有效分蘖的影响。结果表明:有效分蘖是密度(x1 )>秧龄(x3 )>中耕次数(x2 )>穴谷粒数(x4 ),目标性状间呈显著正相关,有效分蘖与产量达极显著相关。最优方案筛选有效分蘖大于 10万蘖 /667m2,定植密度 38. 3~40. 4cm2,中耕次数 3. 0~3. 3次,移栽秧龄 19. 3~21. 5d,穴谷粒数 2. 7~3. 0粒。The mathematical model established on the basis of agricultural system principle and method is used to analysis the effects of SRI technique on effective tiller. The results show that the order of the effective tiller is density(x_1)> seedling age(x_3)> number of inter-cultivation (x_2) >seed number per hole (x_4), there is the significant positive correlation among (maximum) tiller number, effective tiller number and spike forming rate, and it shows most significant correlation between effective tiller number and yield . The optimum cultivation method is above 10×10~4 effective tiller/667m^2,38.3~40.4cm^2 of fix planting (density), 3.0~3.3 of number of inter-cultivation, 19.3~21.5 d of seedling age and 2.7~3.0 seed per hole.

关 键 词：有效分蘖 SRI 中耕 粒数 强化栽培体系 秧龄 杂交水稻 影响 次数 筛选 

分 类 号：S511[农业科学—作物学] S512.1