生长季节对甜玉米产量及产量构成的影响
针对甜玉米在广东省周年种植的特点,以粤甜16、粤甜22、新美夏珍为材料,研究秋种和夏种甜玉米的产量及产量构成,初步明确影响甜玉米周年种植时单位面积产量波动的因素。结果显示,秋种时3个甜玉米品种的鲜苞产量、单穗重、百粒鲜重、穗粒数显著高于夏种,粤甜16、粤甜22、新美夏珍鲜苞产量秋种较夏种分别提高30%、45%、33%。甜玉米收获指数偏低,3个甜玉米品种在夏种和秋种时收获指数均低于42%,秋种较夏种提高3个甜玉米品种的收获指数,粤甜16、粤甜22、新美夏珍分别提高14%、27%、23%。表明夏种较秋种较高的光温水平,缩短甜玉米灌浆进程,降低甜玉米鲜苞产量和收获指数。...
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| Published in | 广东农业科学 Vol. 43; no. 1; pp. 11 - 14 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
广东省农科院作物研究所/广东省农作物遗传改良重点实验室,广东广州,510640
2016
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1004-874X |
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| Summary: | 针对甜玉米在广东省周年种植的特点,以粤甜16、粤甜22、新美夏珍为材料,研究秋种和夏种甜玉米的产量及产量构成,初步明确影响甜玉米周年种植时单位面积产量波动的因素。结果显示,秋种时3个甜玉米品种的鲜苞产量、单穗重、百粒鲜重、穗粒数显著高于夏种,粤甜16、粤甜22、新美夏珍鲜苞产量秋种较夏种分别提高30%、45%、33%。甜玉米收获指数偏低,3个甜玉米品种在夏种和秋种时收获指数均低于42%,秋种较夏种提高3个甜玉米品种的收获指数,粤甜16、粤甜22、新美夏珍分别提高14%、27%、23%。表明夏种较秋种较高的光温水平,缩短甜玉米灌浆进程,降低甜玉米鲜苞产量和收获指数。 |
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| Bibliography: | 44-1267/S sweet corn; growing season; yield and yield components; harvest index; anniversary planting For the characteristics of sweet corn anniversary planting in Guangdong province,the effects of growing season on yield and yield components of sweet corn were studied,with Yuetian 16,Yuetian 22,Xinmeixiazhen as materials,in order to preliminary clear the factors causing yield fluctuation of sweet corn in anniversary planting. The results shoued that, the fresh ear yield,ear weight,ear grain number,100-grain fresh weight of the three sweet corn varieties growing in autumn were significant higher than those in summer. The fresh ear yield of Yuetian 16,Yuetian 22,Xinmeixiazhen in autumn increased by 30%,45% and 33%,respectively. Harvest index of the three varieties in summer and autumn were all low,lower than 42%. The harvest index of the three varieties in autumn were higher than those in summer,and the harvest index of Yuetian 16,Yuetian 22,Xinmeixiazhen in autumn increased by 14%,27% and 23%,respectively. The |
| ISSN: | 1004-874X |