| 不同土壤紧实度对棉花根系生长的影响 |
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| 引用本文： | 宋家祥,庄恒扬.不同土壤紧实度对棉花根系生长的影响[J].作物学报,1997,23(6):719-726. |
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| 作者姓名： | 宋家祥 庄恒扬 |
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| 作者单位： | 扬州大学农学院农学系，江苏扬州，225009 |
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| 基金项目： | 江苏省“八五”重大攻关项目“新型轮作轮耕轮培技术研究”课题的一部分 |
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| 摘 要： | 试验于１９９２－１９９５年在扬州大学农学院进行。供试棉花品种岱１５，设砂、粘土不同溶重盆栽。结果指出，容重１．１ｇ／ｃｍ＾３处理，根系长势“前旺后衰”，容重１．４ｇ／ｃｍ＾３和１．５ｇ／ｃｍ＾３处理根系生长始终处于劣势，而容重１．２ｇ／ｃｍ＾３和１．３ｇ／ｃｍ＾３处理主根生长率与一次侧根增长率高，主根长，一次侧根量大，根系活力强，吸收氮、磷、钾多，长势“前强后稳”，为最优处理；还发现，棉根干重随土
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| 关 键 词： | 棉花 根系 土壤紧实度 |
| 收稿时间： | 1996-06-11 |
| 修稿时间： | 1997-01-08 |
Effect of Soil Compaction on Root Growth of Cotton |
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| Song Jiaxiang,Zhuang Hengyang,Chen Houqing Liu Shiping,Shen Xinping,Lu Jianfei.Effect of Soil Compaction on Root Growth of Cotton[J].Acta Agronomica Sinica,1997,23(6):719-726. |
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| Authors: | Song Jiaxiang Zhuang Hengyang Chen Houqing Liu Shiping Shen Xinping Lu Jianfei |
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| Institution: | Department of Agronomy, Agricultural College, Yangzhou University, Yangzhou, 225009 |
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| Abstract: | Pot experiments were conducted to study the effect of soil compaction on root growth of upland cotton (Gossypium hirsutum). Two type of soils with contrasting texture (sandy loam and clayey)were used. Results showed that soil bulk density (SBD) between 1. 2 and 1.3g/cm3 favored root growth as indicated by the data of root growth rate, main root length, number of branch root, root activity and nutrient uptake of cotton plant. Although the dry weight of root decreased with the increase of SBD from 1.1 to 1. 5 g/cm3, the ratio of stem/ root, and consequently, both biological and economic yield were optimal when SBD was 1. 2-1. 3 g/cm3. It was concluded that SBD between 1. 2 and 1. 3 g/cm3 was most favorable for cotton root growth. |
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| Keywords: | Cotton root growth Soil compaction |
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