| 栽培条件对水稻粒重的影响及其原因分析 |
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| 引用本文： | 王余龙,山西由德.栽培条件对水稻粒重的影响及其原因分析[J].作物学报,1998,24(3):280-290. |
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| 作者姓名： | 王余龙 山西由德 |
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| 作者单位： | 扬州大学农学院稻麦研究室，江苏扬州，225009 |
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| 基金项目： | 江苏省科委自然科学基金，江苏省教委自然科学基金 |
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| 摘 要： | 应用３个水稻品种，设计氮、磷肥处理３７个，从籽粒着生部位，谷粒体积，比重，灌浆过程，灌浆物质供应水平以及根系活力等方面，对不同栽培条件下饱粒千粒重的差异及其原因进行了探讨。（１）不同处理间全穗饱粒千粒重的极差汕优６３为３．９１ｇ，Ｋｏｇａｎｅｍａｓａｒｉ为５．４３ｇ，９００４为７．６２ｇ；（２）稻穗不同部位饱粒千粒重的提高幅度为下部枝梗籽粒大于中部枝梗籽粒，中部枝粳籽粒大于上部枝梗籽粒，一、二次枝
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| 关 键 词： | 水稻 粒重 部位 谷粒体积 谷壳重 灌浆速率 |
| 收稿时间： | 1996-05-24 |
| 修稿时间： | 1996-03-19 |
Effect of Cultural Conditions on Grain Weight and It's Causes in Rice |
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| Wang Yulong Yamamoto Yoshinori Yao Youli Xu Jiakuan Bian Yue Jian Junmin Nitta Youji Li Tanyun Cai Jianzhong.Effect of Cultural Conditions on Grain Weight and It's Causes in Rice[J].Acta Agronomica Sinica,1998,24(3):280-290. |
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| Authors: | Wang Yulong Yamamoto Yoshinori Yao Youli Xu Jiakuan Bian Yue Jian Junmin Nitta Youji Li Tanyun Cai Jianzhong |
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| Institution: | Rice & Research Lab., Agronomy Department,Agricultural college,Yangzhou University, Yangzhou,Jiangsu,225009 |
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| Abstract: | Mid-maturity hybrid indica rice Shanyou 63, late-maturity japonica rice 9004
and Japanese japonica rice Koganemasari were treated in 37 nitrogen and phosphorus supplying
rate and date treatments. Grain bearing part on the panicle, grain volume, specific gravity of
grain, filling rate and period, root activity were investigated for analysing the cultural effect on
fully-filled grain weight. Results were as follows: 1. The 1000 fully-filled grain weight in differ
ent treatments ranged 3. 91g in Shanyou 63, 5. 43g in Koganemasari and 7. 62g in 9004.
2. With the raising of average fully-filled grain weight of the whole panicle, the increment of ful
ly-filled grain weight in lower part of the panicle was greater than that of middle part of the pani
cle , which was in turn greater than that of upper part of the panicle. The same tendency was ob
served in spikelets of both primary and secondary branches. 3. Fully-filled grain weight was pos
itively linearly correlated with grain volume at 0. 01 probability level in all three varieties. The re
lationship between grain weight and specific gravity of grain varied with variety. 4. The higher
the filling rate during the main grain filling period, the greater the fully-filled grain weight. The
longer the main grain filling period, the lighter the fully-filled grain weight. 5. Fullyfilled grain
weight was negatively linearly correlated with spikelets per unit area, but positively linearly cor
related with the amount of filling material per spikelet. 6. Raising the spikelet-root activity in the
ripening period would result in higher fully-filled grain weight. The increment of fully-filled grain
weight of spikelets flowered later in lower part of the panicle was higher than that of spikelets
flowered earlier in upper and middle parts of the panicle, same tendency was shown for the
spikelets on both primary and secondary branches. |
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| Keywords: | Rice Grain weight Grain bearing part Grain volume Husk weight Grain filling rate Filling material Spikelet-root activity |
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