| 直播稻播种量对产量形成及抗倒性的影响 |
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| 引用本文： | 陈海涛,葛宏春.直播稻播种量对产量形成及抗倒性的影响[J].现代农业科技,2010(4):70-70,72. |
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| 作者姓名： | 陈海涛 葛宏春 |
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| 作者单位： | 江苏省黄海农场十二分场,江苏响水,224624 |
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| 摘 要： | 通过田间小区试验,分析了直播稻的播种量对产量形成、抗倒性能的影响。结果表明:随着播种量增加,水稻基本苗和穗数增加,但分蘖穗数迅速减少;粒数呈先增加后迅速减少的趋势;粒重变化较小;产量呈先增后减的趋势。随播种量增加,基部节间拉长,上部节间变短,抗倒伏能力减弱;穗长变短,穗型变小;单株干重变轻,株型变小,由此确定,最佳播种量为90kg/hm2,产量达8821.5kg/hm2。
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| 关 键 词： | 直播稻 播种量 产量形成 抗倒性能 |
Effect of Sowing Quantity on Yield Formation and Lodging Resistance about Direct Seeding Rice |
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| Authors: | CHEN Hai-tao GE Hong-chun |
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| Institution: | The Twelfth Branch of Yellow Sea Farm in Jiangsu Province;Xiangshui Jiangsu 224624 |
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| Abstract: | In this paper,Yanjing 311 and Yanjing 56 which were partial early maturing japonica rice varieties were studied on sowing date under direct sowing cultivation as the test materials.The results showed that sowing date had a greater impact on growing characteristics,yield formation and yield of rice.Under local conditions,optimized sowing date of the two varieties was between June 5 and June 20,and critical sowing date was June 25. |
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| Keywords: | direct seeding rice optimized sowing date critical sowing date |
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