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| 两种绿篱植物对作物养分吸收的影响 | |
| 引用本文： | 丁树文,王峰,蔡崇法,史志华,彭业轩,姜成,张光远.两种绿篱植物对作物养分吸收的影响[J].资源科学,2004,26(Z1):156-160. |
| 作者姓名： | 丁树文 王峰 蔡崇法 史志华 彭业轩 姜成 张光远 |
| 作者单位： | 1. 华中农业大学资源与环境学院,武汉,430070 2. 黄河水利委员会,郑州,450003 3. 湖北秭归水土保持局,秭归,443600 |
| 基金项目： | 国家自然科学基金，香港政府研究资助局资助项目 |
| 摘 要： | 种植等高绿篱是丘陵山区实现农业可持续发展较为理想的经营措施,是防治坡耕地的水土流失和土地退化的有效手段.由于绿篱植物的引入,存在着绿篱植物与作物之间的抑制或促进作用,尤其是两者之间在养分、光、水和气方面的竞争作用,又成为植物篱推广应用的限制因子.本研究选用豆科紫穗槐和禾木科香根草为绿篱植物,间作小麦、大豆,设置单作、板隔、网隔和无隔4个处理.借助同位素示踪技术,测定绿篱和作物养分含量及吸收量.研究结果表明:香根草、紫穗槐对小麦N吸收影响不大,香根草不利于大豆N吸收,紫穗槐对大豆N的吸收有利;香根草抑制小麦P的吸收,促进大豆对P的吸收,紫穗槐对小麦、大豆P吸收都有利;香根草、紫穗槐对小麦、大豆K吸收起促进作用;香根草对N的竞争和对P、K的吸收能力均强于紫穗槐,而对N的吸收能力弱于紫穗槐;两种绿篱对小麦影响弱于小麦个体间的影响,对大豆的影响强于大豆个体的相互影响.这些揭示了紫穗槐和香根草对小麦、大豆之间的养分促进与竞争特点,为丘陵山区植物篱技术的推广应用提供理论依据. |
| 关 键 词： | 绿篱植物 作物 养分 同位素 |
| 文章编号： | 1007-7588(2004)07-0156-05 |
| 修稿时间： | 2004年3月23日 |
Effects of Two Hedgerows Species on Nutrients Uptake for Crops |
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| DING Shu-wen,WANG Feng,CAI Chong-fa,SHI Zi-hua,PENG Ye-xuan,JIANG Cheng,ZHANG Guang-yuan.Effects of Two Hedgerows Species on Nutrients Uptake for Crops[J].Resources Science,2004,26(Z1):156-160. | |
| Authors: | DING Shu-wen WANG Feng CAI Chong-fa SHI Zi-hua PENG Ye-xuan JIANG Cheng ZHANG Guang-yuan |
| Institution: | DING Shu-wen~1,WANG Feng~2,CAI Chong-fa~1,SHI Zi-hua~1,PENG Ye-xuan~3,JIANG Cheng~3,ZHANG Guang-yuan~1 |
| Abstract: | Planting contour hedgerows is a good management measure for the continuing development of agriculture in a mountainous area, it's a efficient measure to prevent and cure the water and soil erosion and degeneration of soil in the sloping field. There are restrain and promotion between hedgerows and crop, especially the competition of the nutrient, light, water and air when the promotion of hedgerows. Those facts limited the diffusion of hedgerows. Vetiveria Zizanioides (abbreviated as VZ) and Amorpha fruticosa (abbreviated as AF) were selected as hedgerows, and wheat and soybean were taken as tested materials in the pot trials. There were four treatments included, which were single crop (wheat or soybean), non-isolation between two plants, net isolation and clapboard isolation.15N isotopic tracer technique was also used in the experiment to mensurate the content of nutrient and the quality absorbed by the hedgerows and crop. Results indicated: 1) both VZ and AF had significant influence on N uptake by wheat, however, AF inhibited N uptake soybean and VZ improved N nutrition; 2) AF inhabited the uptake of phosphorus by wheat but enhanced that by soybean, whereas VZ strengthened the P uptake by both wheat and soybean; 3) two hedgerows could improve potassium uptake by both crops; 4) competition of AF to N and uptake to P or K were stronger than those of VZ, but uptake of N followed an opposite sequence; 5)the effect of two species of hedgerows on wheat was weaker than that of inter wheat, but was stronger than that of inter soybean individuals. The conclusion have been indicated the promotion and competition of the nutrient between VZ, AF, wheat and soybean. It provided theoretics references for the widely diffusion of planting contour hedgerows in the mountain region. |
| Keywords: | Hedgerows Crops Nutrients Uptake |
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