海岛棉不同密度下干物质积累及分配动态研究

Dynamic research on island cotton dry material accumulation and distributive

研究结果表明,不同密度下的海岛棉干物质积累动态均遵循Lagistic曲线规律,单株干物质积累随密度的增加而减少,而单位面积总干物质增加;随着种植密度的增加各器官干物质积累减少,但干物质向生殖器官的转移权重增大;密度为27万株/hm2干物质积累多、有利于产量高。

This research result indicated that island dry material accumulation movements follow lagistic curve law under different plant density.Each coton dry material accumulation decreased but total dry maerial added per unit area by density added.By plant density added.every organ dry material accumulation reduced but transfer dry material proportion to reproduction organ added.The dry material accumulated abundant when density is 270 thousands per hm2.