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| 机械插秧密度和氮肥运筹对两优1528群体动态和产量的影响 | |
| 引用本文： | 程建平,张再君,赵锋,汪光友,杨如辉,李家普,王启均. 机械插秧密度和氮肥运筹对两优1528群体动态和产量的影响[J]. 杂交水稻, 2011, 26(6) |
| 作者姓名： | 程建平 张再君 赵锋 汪光友 杨如辉 李家普 王启均 |
| 作者单位： | 1. 湖北省农业科学院粮食作物研究所,湖北武汉,430064 2. 南漳县农业局,湖北南漳,441500 3. 湖北省农业机械管理局,湖北武汉,430070 4. 南漳县农业机械管理局,湖北南漳,441500 5. 贵州省烟草公司遵义市公司,贵州遵义,563000 |
| 基金项目： | 国家重大科技专项资助项目，国家农业科技成果转化资金项目 |
| 摘 要： | 研究了机插条件下不同的栽植密度、氮肥使用量和氮肥中基、蘖、穗肥不同的用量比例对两系杂交水稻两优1528群体动态、产量构成以及生育进程.结果表明,两优1528分别在机插密度为24.0万穴/hm2、氮肥用量247.5 kg/hm2以及基、蘖、穗肥比例为5:3:2时产量最高.栽植密度过大,无效分蘖增多,每穗总粒数减少,密度过小则群体总量较小,有效穗不足；氮肥用量达247.5 kg/hm2时虽然产量最高,但氮肥偏生产力(PPN)较低,而氮肥用量202.5 kg/hm2可获得较高的产量和氮肥偏生产力. |
| 关 键 词： | 两系杂交水稻 两优1528 机械插秧 栽植密度 氮肥运筹 群体动态 产量 |
Effects of Planting Density and Nitrogen Fertilizer Management on Population Formation and Yield of Liangyou 1528 under Mechanized Transplanting Conditions |
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| CHENG Jian-ping,ZHANG Zai-jun,ZHAO Feng,WANG Guang-you,YANG Ru-hui,LI Jia-pu,WANG Qi-jun. Effects of Planting Density and Nitrogen Fertilizer Management on Population Formation and Yield of Liangyou 1528 under Mechanized Transplanting Conditions[J]. Hybrid Rice, 2011, 26(6) | |
| Authors: | CHENG Jian-ping ZHANG Zai-jun ZHAO Feng WANG Guang-you YANG Ru-hui LI Jia-pu WANG Qi-jun |
| Affiliation: | CHENG Jian-ping1,ZHANG Zai-jun1,ZHAO Feng1,WANG Guang-you 2,YANG Ru-hui3,LI Jia-pu4,WANG Qi-jun5(1.Food Crops Institute,Hubei Academy of Agricultural Sciences,Wuh an,Hubei 430064,China,2.Nanzhang County Agricultural Bureau,Nanzhang,Hub ei 441500,3.Hubei Provincial Agricultural Machinery Bureau,Wuhan,Hu bei 430064,4.Nanzhang County Agricultural Machinery Bureau,Hubei 441500,5.Zunyi City Branch,Guizhou Tabacco Company,Zunyi,Gu izhou 563000,China) |
| Abstract: | Under the mechanized transplanti ng conditions,the effects of planting density,amounts of nitrogen fertilizer app lication and ratios of basal,tillering and panicle nitrogen fertilizer were stu died on the population structure,yield and growth stages of Liangyou 1528,a tw o-line hybrid rice variety.The results showed that Liangyou 1528 yielded highe st when the planting density was at 240 000 hills/hm2,the rate of nitrogen fe rtilization at 247.5 kg/hm2 and the ratio of basal,tillering and panicle nitrogen ... |
| Keywords: | Two-line hybrid rice Liangyou 1528 mechanized trans planting planting density nitrogen fertilizer management population structure yield |
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