Effects Of Different Intercropping Patterns On The Microclimate Of Jujube Garden

Under the condition of drip irrigation,in order to explore the intercropping mode of jujube which is in line with the ecological conditions and production level of the desert oasis belt around the tarim basin in the early dry region,this project stared from the perspective of small climate,gardening in tarim university experimental station two jujube cotton interplanting mode?M1,M2?and three kinds of jujube first interplanting mode?P1,P2,P3?and monoculture juiube garden?CK?,was a cotton?CK1?,was the first landing?CK2?,on the horizontal direction?jujube cotton intercropping as a1,a2,a3,alfalfa intercropping as b1,b2,b3?and vertically?crown bottom,crown middle,crown top,1m?microclimate indexes were investigated,soil moisture content,growth,yield and other indexes were observed,and the careful analysis of the temporal and spatial distribution of the microclimate in different intercropping patterns.The main research results are as follows:1.The diurnal variation of light intensity in different intercropping modes is CK1>M1>M2 and CK2>P3>P2>P1;The change rule of horizontal directions is CK1>a3>a2>a1 and CK2>b3>b2>b1;In the vertical direction,the trend of 1 m>crown top>crown middle>crown bottom was lower than that of the control.2.The air temperature of the overlaying type in each room was in the from of inverted"V"in the horizontal direction,with a3>a2>a1>CK1.The vertical air temperature of jujube cotton intercropping mode is as follows 1m>crown top>crown middle>crown bottom,CK1>M1>M2.M2 was 1.43?lower than CK1;The air humidity was shown as crown middle>crown bottom>crown top>1 m,M2>M1>CK1,M2 was 6.91?higher than CK1.The horizontal and vertical variation of air humidity in jujube-cotton intercropping patterns is consistent with that in jujube cotton intercropping pattern.3.The maximum surface temperature showed a trend of CK1>M1>M2,CK2>P3>P2>P1 at each growth stage,and the change trend of the minimum surface temperature wasM2>M1>CK1,P1>P2>P3>CK2.Diurnal variation of geothermal temperature showa trend of"low-high-low"on the whole,and in the vertical direction,geothermal temperature decreases gradually with the increase of soildeph.4.Different farming modes of jujube had no direct influence on the change of wind speed at different time points,but CK1was significantly larger than M1,M2,CK2 and CK2 was significantly large than P1,P2,P3.There was a significant linear positive correlation between the reduction of wind speed and the control wind speed.The windproof efficiency of jujube cotton intercropping mode was slightly higher than that of jujube first cropping mode,but there was no significant difference between M1,M2,P1,P2 and P3.5.The over all CO₂ concentration of intercropping system is shown as M1>M2,P3>P2>P1,a3>a2>a1,b3>b2>b1 in the horizontal direction 1 m>crown top>crown middle>crown bottom in the vertical direction.6.Soil water content in each model of zero-cotton intercropping and jujube straight intercropping was higher than that of the control,and soil water content changed with the deepening of soil layer.7.Intercropping had little effect on the growth of jujube trees,but slightly reduced the yield.However,jujube cotton cropping had a serious impact on the yield of jujube trees.8.The economic benefit of the cropping mode was higher than that of the single-cropping mode,M1 mode was the best in the jujube cotton intercropping mode,and P2 mode was the best in the jujube first cropping mode.