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以阿拉尔垦区枣园间作三叶草、剪股颖、黑麦草和百脉根的密植园为研究对象,清耕枣园作为对照,研究生草栽培对枣园微域环境及土壤理化性状的影响。采用田间取样和室内分析相结合的方法,对枣园内空气温度、相对湿度、土壤温度、土壤养分等环境因子进行测定分析。结果表明:枣园间作牧草后微域环境发生变化,4种生草枣园近地层7月日均空气温度较清耕枣园分别降低1.34、1.01、0.64、1.26℃;日均空气相对湿度同比清耕枣园分别提高15.04%、8.66%、7.36%、7.39%;日均土壤温度分别较清耕枣园土壤温度低3.46、2.22、1.76、1.60℃。土壤理化性状也发生变化,生草能降低土壤容重,其中以三叶草枣园土壤容重降低效果最明显,为1.44g/cm3;枣园生草土壤有机质含量均值同比清耕枣园分别提高了1.65、0.65、0.10、1.51g/kg;土壤全氮含量均值比清耕枣园增加1.03、0.32、0.41、0.80g/kg;土壤全磷略有降低,但随着土层增加略有上升趋势;土壤全钾含量差异均不显著。综上,说明生草枣园能改善园内的微域环境及土壤理化性状。
Taking arable land of Zaoyuan in Alar land reclamation area as clover, Cercopithecum, Lolium perenne and Lotus corniculatum as research object, the clear-cut Zaoyuan garden was used as a control to study the effects of grass planting on jujube field micro-environment and soil physical and chemical properties. The method of field sampling and indoor analysis was used to analyze the environmental factors such as air temperature, relative humidity, soil temperature and soil nutrient in jujube garden. The results showed that the micro-environment of the jujube orchards changed after intercropping. The average daily air temperature of July and July of the four jujube orchards decreased 1.34, 1.01, 0.64 and 1.26 ℃ respectively. The average daily relative humidity Qingzao jujube increased by 15.04%, 8.66%, 7.36%, 7.39% respectively. The average daily soil temperature was 3.46,2.22,1.76,1.60 ℃ lower than that of the Qingzao jujube orchard. The soil physical and chemical properties also changed, the raw grass can reduce the soil bulk density, of which the Clover jujube garden soil bulk density to reduce the most obvious effect, 1.44g / cm3; Jujube Orchard grassland soil organic matter content of Qingzao Juyuan respectively increased by 1.65, 0.65, 0.10 and 1.51g / kg respectively. The mean value of total nitrogen in soil increased 1.03,0.32,0.41 and 0.80g / kg than that in Qingzao jujube. Soil total phosphorus decreased slightly but increased slightly with the increase of soil layer. Soil Total potassium content differences were not significant. To sum up, that raw grass jujube garden can improve the park’s micro-environment and soil physical and chemical properties.