| The microclimate effect of Malus pumila and Arachis hypogaea intercropping system in the loess plateau of West Shanxi Province |
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| DOI：10.7606/j.issn.1000-7601.2018.02.34 |
| Key Words: the loess plateau of West Shanxi Province intercropping system microclimate |
| Author Name | Affiliation | | CAI Zhi-cai | College of Soil and Water Conservation, Beijing Forestry University, Beijing100083, China | | BI Hua-xing | College of Soil and Water Conservation, Beijing Forestry University, Beijing100083, China
Key Laboratory of State Forestry Administration on Soil and Water Conservation（Beijing Forestry University）, Beijing 100083, China
Beijing Engineering Research Center of Soil and Water Conservation（Beijing Forestry University）, Beijing 100083, China
Engineering Research Center of Forestry Ecological Engineering, Ministry of Education（Beijing Forestry University）, Beijing 100083, China
Ji County Station, Chinese National Ecosystem Research Network (CNERN), Beijing100083, China
The Collaborative Innovation Center for Promoting Ecological Functions of Forestry and Economic Trees, Beijing 102206, China | | XU Hua-sen | College of Resources and Environment, China Agricultural University,Beijing, 100094, China | | WANG Dan | College of Soil and Water Conservation, Beijing Forestry University, Beijing100083, China | | CHANG Yi-fang | College of Soil and Water Conservation, Beijing Forestry University, Beijing100083, China | | LIU Jing-jian | Forestry Workstation of Ji County, Linfen, Shanxi 042200, China |
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| Abstract: |
| Maluspumila and Arachishypogaea intercropping system is a main agroforestry configuration mode in the Loess Plateau of Western Shanxi Province, but the unreasonable design of the intercropping system often leads to the decrease of the growth and yields of the crops. The purpose of this paper was to quantitatively analyze the microclimate of the fruit-crop intercropping system and the impact of the microclimate on the growth and yields of crops, and to provide theoretical support for the optimization of local fruit-crop intercropping system. A seven-year-old M. pumila and A.hypogaea intercropping system in Ji County were chosen as the research object, and an A.hypogaea monoculture system was chosen as control. The research has been conducted in below procedures: First, setting root barriers between crop and tree to block the extension of the root system. Then, monitoring the microclimate factors (photosynthetically active radiation (PAR), air temperature, wind speed and relative humidity) of crop rows which are at different distance from tree rows, and analyzing the impact of those factors on the growth and yields of A.hypogaea. The results from quantitate analysis are below: (1) The relative PAR, air temperature, wind speed and relative humidity of intercropping system were 49.39%～88.07%, 92.74%～97.32%, 112.36%～123.72%, 70.58%～74.22%, respectively. Moreover, the closer crop row was to tree rows, more significant the effect was. (2) The comprehensive effect of the fruit-crop intercropping system on the growth of A.hypogaea was negative. The net photosynthetic rates (Pn) and yields of the fruit-crop intercropping system were lower than A.hypogaea monoculture system, and the closer the crop row was to tree rows, lower the Pn and yield were. (3) Different microclimate factors had different degrees of influence on A.hypogaea. The contribution rates of PAR, air temperature and relative humidity to the Pn and yield of A.hypogaea were 62.48%、20.71%、16.45% and 53.48%、16.45%、30.07%, respectively. |
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