| 北方设施菜地夏季休闲期甜玉米最佳行株距和播期研究 |
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| 引用本文： | 张继宗,张亦涛,左强,翟丽梅,刘宏斌.北方设施菜地夏季休闲期甜玉米最佳行株距和播期研究[J].玉米科学,2010,18(6):98-101. |
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| 作者姓名： | 张继宗 张亦涛 左强 翟丽梅 刘宏斌 |
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| 作者单位： | 1. 中国农业科学院农业资源与农业区划研究所/农业部作物营养与施肥重点实验室,北京,100081
2. 北京市农林科学院营养与资源研究所,北京,100089 |
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| 基金项目： | “863”国家高技术研究发展计划项目(2008AA06Z313)、中央级公益性科研院所基本科研业务费专项资金中国农业科学院农业资源与农业区划研究所项目(2008-7) |
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| 摘 要： | 在北京市郊区设施菜地对夏季敞棚休闲期甜玉米不同株距和不同播期进行试验,研究高效吸氮、有效减少NO3--N淋溶同时有较好经济效益的甜玉米种植模式。结果显示,以83 cm大行距、50 cm小行距、26 cm株距为最佳行株距,吸氮量达289 kg/hm2,收获后0～200 cm土层NO3--N含量减少649 kg/hm2,鲜穗产量达到19 573kg/hm2,均显著优于其他行株距处理(P0.05)。甜玉米提前10 d播种(比休闲开始当日提前10 d)为最佳播期,吸氮量达到328 kg/hm2,收获后0～200 cm土层NO3--N含量减少357.7 kg/hm2,鲜穗产量达19 853 kg/hm2,显著优于其他播期处理(P0.05)。
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| 关 键 词： | 甜玉米 设施菜地 播期 |
| 收稿时间： | 6/8/2010 12:00:00 AM |
Study of Best Row Spacing and Sowing Time on Sweet Corn in FacilityVegetable Field of North China in Summer Fallow Period |
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| ZHANG Ji-zong,ZHANG Yi-tao,ZUO Qiang,ZHAI Li-mei,LIU Hong-bin.Study of Best Row Spacing and Sowing Time on Sweet Corn in FacilityVegetable Field of North China in Summer Fallow Period[J].Journal of Maize Sciences,2010,18(6):98-101. |
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| Authors: | ZHANG Ji-zong ZHANG Yi-tao ZUO Qiang ZHAI Li-mei LIU Hong-bin |
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| Abstract: | For exploring the effective nitrogen absorption to reduce NO3--N leaching and a planting pattern of sweet corn with better economic benefit, two field tests was set including row-spacing and sowing time. The results showed that the best spacing in the rows was 83 cm and 50 cm meanwhile 26 cm in the plants, in which condition the nitrogen uptake could reach to 289 kg/ha, NO3--N content decreased 649 kg/ha in 0 - 200 cm soil layer after harvest and the yield was up to 19 573 kg/ha compared with other five row-spacing treatments(P<0.05). The optimum sowing time was 10 days in advance (that was 10 days ahead of fallow time) with the nitrogen uptake being 328 kg/ha, NO3--N content decreasing 357.7 kg/ha in 0 - 200 cm soil layer after harvest and the yield being 19 853 kg/ha compared with other two treatments(P<0.05). |
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