| 氮肥对不同质地土壤棉花生物量与氮素积累的影响 |
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| 引用本文： | 罗新宁,陈冰,张巨松,蒋平安,娄善伟,彭小峰,何嘉林.氮肥对不同质地土壤棉花生物量与氮素积累的影响[J].西北农业学报,2009,18(4):160-166. |
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| 作者姓名： | 罗新宁 陈冰 张巨松 蒋平安 娄善伟 彭小峰 何嘉林 |
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| 作者单位： | 罗新宁(新疆农业大学草业与环境科学学院,新疆乌鲁木齐,830052;阿克苏职业技术学院植物科学系,新疆阿克苏市,843000);陈冰,蒋平安(新疆农业大学草业与环境科学学院,新疆乌鲁木齐,830052);张巨松(新疆农业大学农学院,新疆,乌鲁木齐,830052;教育部棉花工程研究中心,新疆乌鲁木齐,830052);娄善伟,彭小峰,何嘉林(新疆农业大学农学院,新疆,乌鲁木齐,830052) |
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| 基金项目： | 国家"十一五"科技支撑计划项目;棉花高产优质高效栽培技术研究2006BAD21B02-1，新疆"十一五"重大专项;200731133-1，新疆维吾尔自治区上壤学重点学科基金 |
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| 摘 要： | 以南疆生态条件为背景,在不同质地土壤(砂壤土、重壤土)上对不同氮素水平(0、105、210、315、420kg·hm-2)处理下的棉花生物量和氮素积累与利用进行了大田试验,结果表明棉株生物量和氮素积累符合Logistic曲线模型;与重壤土相比,砂壤土能提早进入生物量和氮素快速积累期,最大积累速率出现日提前,更有利于棉花对养分的吸收;砂壤土、重壤土试点上分别以315、210 kg·hm-2氮素的棉株总生物量、氮素积累量最大,其动态积累模型的特征参数最协调,皮棉产量最高.因此可以通过施肥量调节现蕾后棉株生长特征值以获得高产.施肥过多易造成营养器官生长旺盛,虽然生物量和氮素积累量大,但不能及时向生殖器官转移,皮棉产量降低.
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| 关 键 词： | 土壤质地 棉花 氮肥用量 生物量积累 氮素积累 |
| 收稿时间： | 2009/1/7 0:00:00 |
| 修稿时间： | 2009/3/20 0:00:00 |
Effect of Nitrogen Applied Levels on the Dynamics of Biomass, Nitrogen Accumulation of Cotton Plant on Different Soil Textures |
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| LUO Xinning,CHEN Bing,ZHANG Jusong,JIANG Pingan,LOU Shanwei,Pen Xiaofen and HE Jialing.Effect of Nitrogen Applied Levels on the Dynamics of Biomass, Nitrogen Accumulation of Cotton Plant on Different Soil Textures[J].Acta Agriculturae Boreali-occidentalis Sinica,2009,18(4):160-166. |
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| Authors: | LUO Xinning CHEN Bing ZHANG Jusong JIANG Pingan LOU Shanwei Pen Xiaofen and HE Jialing |
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| Institution: | College of Grassland and Environment, Xinjiang Agricultural University, Urumqi Xinjiang 830052, China;Akesu Vocational and Technology College, Akesu Xinjiang 843000, China;College of Grassland and Environment, Xinjiang Agricultural University, Urumqi Xinjiang 830052, China;College of Agronomy, Xinjiang Agricultural University, Urumuqi Xinjiang 830052, China;National Cotton Research Center of Ministry of Education, Urumqi Xinjiang 830052, China;College of Grassland and Environment, Xinjiang Agricultural University, Urumqi Xinjiang 830052, China;College of Agronomy, Xinjiang Agricultural University, Urumuqi Xinjiang 830052, China;College of Agronomy, Xinjiang Agricultural University, Urumuqi Xinjiang 830052, China;College of Agronomy, Xinjiang Agricultural University, Urumuqi Xinjiang 830052, China |
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| Abstract: | A field experiment with two soil textures (sandy loam and clayloam) and different levels of nitrogen application (0,105,210,315,420 kg·hm-2) were conducted to study the dynamic characteristics of accumulation of dry matter and nutrient of cotton plant under the background of ecology in south of Xinjiang.The result showed that the total dry matter and nitrogen accumulation of cotton are in line with the Logistic model.With the increase of nitrogen application rate, the dry matter and nitrogen up take firstly increase, and then reach its highest value at 315 kg·hm-2 on sandy loam and 210 kg·hm-2 on clayloam.The eigenvalues of the dynamic accumulation model with the nitrogen application level of 315 kg·hm-2 and 210 kg·hm-2 on sandy loam and clay loam, respectively, were more harmonious than that with other treatments.Excessive nitrogen delayed cottonmaturity and increased the proportion of vegetative organs, thereby reduced their lint yield. |
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| Keywords: | Soil texture Nitrogen application levels Cotton Biomass accumulation Nitrogen accumulation |
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