作　　者： ; ; ; (黄农荣）; (林道宣）; (蔡汉雄）; (梁权）; (梁友强）; (梁成英）;

机构地区： 广东省农业科学院

出　　处： 《热带亚热带植物学报》 1996年第S1期33-39,共7页

摘　　要： 于1996年早季研究了湿润与旱育秧方式在稀植(2苗/科)和多植(4苗/科)情况下超高产早籼品种特三矮2号在本田生长期的群体动态结构与产量表现。与多植比较,稀植的比叶重较大,中期叶面积系数较小,每穗颖花数较多;但有效分蘖数较少。与湿润育秧比较,旱育秧每科穗数较多,抽穗后群体保持较高的叶面积系数和干物质生产力;但生育期较长。旱育稀植的谷草比较高。 In the early cropping season of 1996 in Guangzhou, seedlings of a super-high yield indica rice variety of Te-San-Ai 2 were raised in moist and dry nurseries, then transplanted by densities of 2 and 4 seedlings per hill. The behavior of its population structure and grain yield were studied. Compared to the dense transplanting, the leaf area index was reduced, the specific leaf weight and the number of spikelets per hill were increased but with less number of ear-bearing tillers in sparse transplanting. In comparison with moist seedling raising, the dry seedling raising could maintain greater leaf area index and higher production of dry matter in the filling and ripening stages, but the growth duration in the field was prolonged. The grain/straw ratio was enhanced by dry seedling raising with sparse transplanting.

关 键 词： 旱育稀植 茎蘖动态 叶面积系数 干物质生产 产量

领　　域： [农业科学]