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试验于 1999～ 2 0 0 0年在扬州大学农学院试验场进行 ,以两个代表性品种 (组合 )为材料。采用不同的栽培措施 ,研究高产水稻生育前期的株型指标及其与产量的关系 ,结果表明 :有效分蘖期 (N- n期 )植株叶片松散度适宜 ,顶部三叶松散度之和 7.7～ 7.8度 ,叶鞘载叶量较小。拔节期汕优 6 3叶片松散度宜小 ,顶部 3叶松散度之和 7.7度左右 ,叶鞘载叶量 0 .36～ 0 .38cm2 / m g;武运粳 8号叶片松散度宜大 ,顶部 3叶松散度之和 6 .0度左右 ,叶鞘载叶量在 0 .2 7～ 0 .34cm2 / mg。
The experiment was carried out in the experimental field of College of Agriculture, Yangzhou University from 1999 to 2000 with two representative varieties (combinations) as materials. Using different cultivation methods, the plant type indexes of high-yielding rice at early growth stage and their relationship with yield were studied. The results showed that the leaf looseness of the plant at the effective tillering stage (N-n stage) was suitable, and the sum of the top three- Degree, leaf sheath carrying a smaller amount of leaves. The leaf looseness of Shanyou 6 3 at jointing stage should be small, the sum of the top three leaf loosening degrees is about 7.7 degrees, the leaf sheath carrying leaves is 0.36 ~ 0.38cm2 / mg, the leaf looseness of Wuyunjing 8 is larger, and the top 3 The sum of leaf loose degree is about 6.0 degrees, the leaf sheath carries the leaf amount in 0.27 ~ 0.34cm2 / mg.