不同密度、插植方式对水稻生育及产量的影响  

Effects of different densities and plantingform on rice development and yield

作　　者：李熙英[1] 权成武[1] 黄世臣[1] 

机构地区：[1]延边大学农学院森林科学系，吉林 龙井 133400

出　　处：《延边大学农学学报》2000年第4期256-259,共4页Agricultural Science Journal of Yanbian University

摘　　要：稀植处理的有效分蘖终止期向后延迟 5～ 8d ,一次和二次分蘖数明显增多 ,有效分蘖率明显提高 ;稀植处理的穗长度变长、一次枝梗和二次枝梗数以及每穗粒数明显增多 ,经相关分析每穗粒数与穗长、一次枝梗数、二次枝梗数呈正相关 ,其回归方程为Y=- 1 .50 64+1 .41 63X1 +3.50 70X2 +1 .6562X3;经产量方差分析结果 ,1 2 .5穴 /m2 的产量最高 ,其原因与平方米穗数和穗粒数较多有关 .综合分析结果 ,密度为 1 2 .5穴 /m2The end of effective tillering delays 5 to 8 days through thin planting one time and two times tiller number increases obviously, the effective tillering rate improves the length of ear turns longer under thin planting,the number of one time and two times branch stalk and rice yield increase obviously.Relative analysis showed it was positive relation that every rice yield with length ear one time branch stalk number and two times ones. The regression equation is  Y=-1.506 4 +1.416 3 X 1+3.507 0 X 2+1.656 2 X 3. It was showed that the density of 12.5 branch per square metre was the best one through the analysis of avriance. It had something with ear number per square metre and rice yield. In a word, double planting wedth and narrowing which density was 12.5 branch per square metre was good plantingform to improve on rice yield and resisting cold.

关 键 词：产量 水稻 生育 种植密度 插植方式 

分 类 号：S511.044[农业科学—作物学]