| 不同土壤质地对紫花苜蓿干物质积累的影响 |
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| 引用本文： | 赵国珊,李卫军,孙强.不同土壤质地对紫花苜蓿干物质积累的影响[J].新疆农业科学,2007,44(5):642-646. |
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| 作者姓名： | 赵国珊 李卫军 孙强 |
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| 作者单位： | 新疆农业大学草业工程学院/新疆草地资源与生态重点实验室,乌鲁木齐,830052 |
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| 基金项目： | 新疆维吾尔自治区发展和改革委员会课题 |
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| 摘 要： | 试验研究了不同土壤质地对紫花苜蓿总干物质积累和分配的影响。试验结果表明:壤性黏土0~60cm土壤平均相对含水量在苜蓿整个生育期均大于粉砂性壤土和黏土,而土壤温度在结荚初期以前均大于粉砂性壤土和黏土。壤质黏土中苜蓿总干物质的积累量大于粉砂性壤土和黏土。在干物质分配过程中,苜蓿营养生长阶段主要是向光合器官中转移,壤性黏土中苜蓿叶重及所占比例均高于其它2种土壤,苜蓿生殖生长阶段干物质主要向生殖器官转移,并以叶的减少为代价。壤质黏土有利于紫花苜蓿的生长。
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| 关 键 词： | 土壤质地 干物质 积累 |
| 文章编号： | 1001-4330（2007）05-0642-05 |
| 收稿时间： | 2006-12-24 |
| 修稿时间： | 2006年12月24 |
Effects of Different Soil Texture on Dry Matter Accumulation of Alfalfa |
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| ZHAO Guo-shan,LI Wei-jun,SUN Qiang.Effects of Different Soil Texture on Dry Matter Accumulation of Alfalfa[J].Xinjiang Agricultural Sciences,2007,44(5):642-646. |
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| Authors: | ZHAO Guo-shan LI Wei-jun SUN Qiang |
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| Institution: | Key Laboratory of Grassland Resource and Ecology of Xinjiang, College of Pratacultural Engineering Xinjiang Agricultural University, Urumqi 830052, China |
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| Abstract: | This paper is to study the effects of different soil textures on Alfalfa's dry matter accumulation.The experiment results indicated that the average relative water content in 0～60 cm of loam clay was higher than that of slit loam and clay in whole growth duration of alfalfa,but the soil temperature in the former was higher than that in the latter before the podding stage.During the dry matter's distribution stage,alfalfa nutrient growth phase was mainly transferred to photosynthetic organ,alfalfa's leaf weight and its ratio in loam clay was higher than that in other two soils,dry matter was mainly transferred to organ in the generative stage of alfalfa.Alfalfa can grow vigorously in loamy clay. |
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| Keywords: | soil texture dry matter accumulation |
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