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作物学报 ›› 2010, Vol. 36 ›› Issue (08): 1355-1361.doi: 10.3724/SP.J.1006.2010.01355

• 耕作栽培·生理生化 • 上一篇    下一篇

海河低平原区杨农复合模式内作物生产力与生态因子的关系

刘月华,陈源泉,朱敏,曲波,隋鹏*,高旺盛*   

  1. 中国农业大学农学与生物技术学院，北京 100193
  • 收稿日期:2010-02-08 修回日期:2010-04-20 出版日期:2010-08-12 网络出版日期:2010-06-11
  • 通讯作者: 隋鹏, E-mail: suipengye@cau.edu.cn; 高旺盛, E-mail: wshgao@cau.edu.cn
  • 基金资助:
    本研究由国家“十一五”科技支撑计划重点项目（2007BAD89B01）和河北省科技攻关项目（06220115D）资助。

Relationship between Crop Productivity and Ecological Factors in Poplar-Crop Intercropping Systems in Haihe Lowland Area

LIU Yue-Hua, CHEN Yuan-Quan, ZHU Min, QU Bo, SUI Peng*, and GAO Wang-Sheng*   

  1. College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
  • Received:2010-02-08 Revised:2010-04-20 Published:2010-08-12 Published online:2010-06-11
  • Contact: SUI Ping, E-mail: suipengye@cau.edu.cn; GAO Wang-Sheng,E-mail: wshgao@cau.edu.cn

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摘要： 定位监测林河北省衡水地区不同种植格局的杨农复合模式(杨树林龄为6~7年)内土壤含水量、PAR(光合有效辐射)和温度的变化，分析该区杨农复合模式内作物生产力与生态因子的关系。研究表明，杨农复合模式的PAR较粮单作模式降低了32.43%~76.71%，土壤含水量降低了18.67%~42.75%，不同杨农复合模式的PAR和土壤水分间也存在显著差异(P<0.05)；复合系统内的黑麦草生物量与PAR的相关性最大，饲用大豆生物量与PAR和0~40 cm土壤体积含水量间的相关性都较大，相关系数均超过0.7500(P<0.05)。提高杨农复合模式的PAR和土壤含水量均可以有效提高作物生物量。鉴于该地区水资源缺乏，通过间伐或修枝等措施提高复合模式内的PAR是提高作物生物量的可行措施。

关键词: 杨农复合系统, 光合有效辐射, 土壤水分, 作物生产力

Abstract: Agroforestry system is an approach to improve land use efficiency, it not only allows for the production of trees and crops, but also makes highly use efficiency of natural resources. Because of its advantages of Agroforestry, large scales of poplar-based Agroforestry systems have been developed in north of China since 2002. Hengshui area, in Hebei province, where lots of poplar-based Agroforestry systems exist, is a typical area lacking in water. Our previous study showed that Agroforestry systems consumed a large quantity of water storing in soil and decreased the production of both trees and underlayer crops as trees grew. To analyze the relationships of crop biomass with 0–40 cm soil moisture, and photosynthetically active radiation (PAR) and temperature, we conducted a study from Oct. 2007 to Oct. 2009 on 6–7 year-old poplar-crop intercropping systems with three different patterns of poplar plantations. Compared with sole crop system, PAR and 0–40 cm soil moisture in Agroforestry systems were reduced by 34.43%–76.71% and 18.67%–42.74% respectively. Crop biomass, PAR and soil moisture all showed significant difference among different Agroforestry systems (P<0.05). Ryegrass biomass was highly correlated with PAR, while soybean biomass was highly correlated with both PAR and soil moisture (P<0.05), with all the correlation coefficients 0.7500 (P<0.05) in both 2008 and 2009. The results showed that Agroforestry systems could product more crop biomass by increasing either PAR or soil moisture. And increasing PAR by removing poplar trees (removing alternate trees in rows, or even removing alternate tree rows) or tree branch pruning was an effective measure under the condition of seriously lacking in water in that area.  

Key words: Poplar-crop intercropping systems, PAR, Soil moisture, Crop productivity

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