| 紧凑大穗型玉米品种陕单902适宜密度与产量潜力的研究 |
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| 引用本文： | 薛吉全,马国胜,路海东.紧凑大穗型玉米品种陕单902适宜密度与产量潜力的研究[J].西北农业学报,2002,11(3):36-40. |
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| 作者姓名： | 薛吉全 马国胜 路海东 |
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| 作者单位： | 西北农林科技大学农学院玉米所,陕西,杨凌,712100 |
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| 基金项目： | 陕西省农业重点推广项目(98-007);陕西省攻关项目(96K01-G2). |
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| 摘 要： | 通过4年2个试验点的密度定额试验表明,密度对紧凑大穗型玉米品种陕单902的有效总花数影响较小,而对穗粒数、成粒率影响较大,籽粒产量的提高与成粒率、穗粒数和群体总粒数的增加密切相关,其适宜种植密度一般不应超过52 500株/hm2,产量最高时最大叶面积系数可达到4.70,作物生长率为19.80 g/m2*d,光能截获量可达到90%,吐丝至成熟期干物质提高1 kg,陕单902籽粒产量可增加0.6356 kg.
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| 关 键 词： | 紧凑大穗型玉米 产量潜力 密度 成粒率 陕单902品种 |
| 文章编号： | 1004-1389(2001)03-0036-05 |
| 收稿时间： | 2002/4/15 0:00:00 |
| 修稿时间： | 2002年4月15日 |
The Study on Suitable Density and Yield Potential of Shaandan 902 of Compact and Big Ear Maize |
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| XUE Ji-quan,MA Guo-sheng and LU Hai-dong.The Study on Suitable Density and Yield Potential of Shaandan 902 of Compact and Big Ear Maize[J].Acta Agriculturae Boreali-occidentalis Sinica,2002,11(3):36-40. |
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| Authors: | XUE Ji-quan MA Guo-sheng and LU Hai-dong |
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| Institution: | Institute of Maize, College of Agronomy, Northwest Sci-Tech University of Agriculture and Forestry, Yangling Shaanxi 712100;Institute of Maize, College of Agronomy, Northwest Sci-Tech University of Agriculture and Forestry, Yangling Shaanxi 712100;Institute of Maize, College of Agronomy, Northwest Sci-Tech University of Agriculture and Forestry, Yangling Shaanxi 712100 |
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| Abstract: | Through spend four years on test of density in two site, it is founded that effect of dedsity is little on effective sum flowers, great on grains per spike and rate of formed grain. It is correlation with increasing of rate of formed grains and grain per spike and colony sum grain that yield of grain is enhanced. It''s suitable density is not more 52 500 plants/hm2. When yield is up most, biggest leaf area index is 4.70, plant growth ratio is 19.80 g/m2·d, energy of intercept and capture quantity is 90%.When dry matter is increased 1kg during Bilking stage to mature stage, grain yield of shaandan 902 is enhanced 0.6356 kg. |
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| Keywords: | Maize density Rate of formed grain Yield |
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