| 覆膜玉米合理密度的研究 |
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| 引用本文： | 李振华,胡国良,张志双.覆膜玉米合理密度的研究[J].东北农业大学学报,1990(4). |
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| 作者姓名： | 李振华 胡国良 张志双 |
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| 作者单位： | 东北农学院作物栽培教研室，东北农学院作物栽培教研室，东北农学院作物栽培教研室 |
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| 摘 要： | 覆膜玉米采用20片叶左右的晚熟单交种,每亩为3171株时,可获600公斤左右的产量。覆膜玉米叶面积指数拔节期须达1.2左右,抽雄期达3.43～3.77,5叶期至乳熟期总光合势为14～15.8万m~2·~(-1)·亩~(-1)。
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| 关 键 词： | 玉米 合理密度 叶面积指数 光合势 光照强度 |
A STUDY ON THE OPTIMUM DENSITY OF CORN PROTECTED WITH PLASTIC SHEETING |
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| Li Zhenhua,Hu Guoliang and Zhang Zhishuang Northeast Agricultural College,Harbin ,China.A STUDY ON THE OPTIMUM DENSITY OF CORN PROTECTED WITH PLASTIC SHEETING[J].Journal of Northeast Agricultural University,1990(4). |
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| Authors: | Li Zhenhua Hu Guoliang and Zhang Zhishuang Northeast Agricultural College Harbin China |
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| Institution: | Li Zhenhua,Hu Guoliang and Zhang Zhishuang Northeast Agricultural College,Harbin 150030,China |
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| Abstract: | Field cxperiment was carried out to study the optimum density of protected corn in Harbin region.The maximum yield,600 kg·mu~(-1),was obtained from the hybrid with about 20 leaves at density 3171 mu~(-1).It was suggested that LAI of protected corn should be 1.2 or more at shooting and 3.43～3.77 at tassel emergence.The photosynthetic potential from 5-leaf to milk-maturity stages was 1.4～1.6 10~5m~2·d~(-1)·mu~(-1). |
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| Keywords: | corn optimum density LAI(Lcaf Arca Index) photosynthetie potential light intensity |
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