| Preliminary study on micro-climatic characteristics of walnut and wheat intercropping systems |
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| DOI：10.7606/j.issn.1000-7601.2016.05.21 |
| Key Words: walnut and wheat intercropping systems micro-climate shade rate light intensity |
| Author Name | Affiliation | | WANG Ji-chuan | College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
College of Plant Science, Tarim University, Alar, Xinjiang 843300, China | | Aimerjiang Wusiman | College of Plant Science, Tarim University, Alar, Xinjiang 843300, China | | Ayixiemuguli Yusup | Seed Management Station of Moyu County, Hetian, Xinjiang 848100, China | | WU Ai-qiong | Seed Management Station of Moyu County, Hetian, Xinjiang 848100, China | | XIA Jian-hua | Seed Management Station of Moyu County, Hetian, Xinjiang 848100, China | | ZHANG Dong-hai | Institute of Agriculture Science and Technology of the Third Division of Xinjiang Production and Construction Group, Tumisuk, Xinjiang 843901, China |
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| Abstract: |
| The microclimate factors in two intercropping systems between walnut and wheat in Moyu County were studied. The results showed that compared with monoculture wheat, maturity of intercropped wheat was delayed by 4～5 days, CO2 concentration, temperature and yield were decreased by 25.33～28.73 μmol·mol-1, 0.23℃～0.43℃ and 42.2%～74.5%, respectively, and relative humidity was increased by 4.38～5.32 percentage points. In the intercropping area, the stage from jointing to booting was the rapid formation period for walnut canopy. The shading rate reached to 60.32%～52.22% and the severe shading rate (light intensity≤1/2 light intensity of open space) was 29.77%～34.09%. At the stage from flowering to maturity, the shading rate reached to 52.21%～71.51% and the severe shading rate was 37.15%～38.39%. During the full growth period, duration with the weak influence (light intensity>1/2 light intensity of open space) was about 50 days, while duration with the strong influence (light intensity≤1/2 light intensity of open space) was about 45 days. The order of CO2 concentration and temperature in intercropping wheat groups was top group> middle> bottom. The closer the distance between the tree rows to observation point, the lower the average CO2 concentration in wheat population, the higher the average relative humidity, and the lower the average temperature. Micro-climate condition and yield components for walnut configured with 9 m×3 m were better than those configured with 6 m×4 m, a model worthy of being promoted for walnut and wheat intercropping. |
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