不同耕作模式对枣园根层土壤理化性状的影响

[Objective]For the southern Xinjiang Kashgar area date palm garden long-term implementation of clear-tillage system,resulting in the decline of soil physical properties,soil nutrient reduction,serious damage to soil structure and other issues,this article intends to study the impact of different tillage modes of grey jujube garden soil physicochemical properties for the southern Xinjiang date palm garden management selection of suitable tillage methods to provide data references.[Methods]Taking the typical grey jujube gardens in South Xinjiang as the research object,three different tillage methods,namely,clear tillage,no-tillage and intercropping with rapeseed,were set up between the rows of jujube gardens,to analyse the physicochemical properties of the soil at different depths of different treatments of jujube gardens(Soil temperature and humidity,bulk weight,porosity,organic matter,total nitrogen content,total phosphorus content,etc.),and to determine the effects of different tillage methods on the soil of grey jujube gardens in South Xinjiang.The changes in soil physical and chemical properties(soil temperature,water content,bulk weight,porosity,conductivity,PH,organic matter,total nitrogen content,total phosphorus content,total potassium content,quick-acting phosphorus content,effective potassium content,and alkaline dissolved nitrogen content)were characterised.[Result]Compared with clear tillage,the soil water content of jujube root layer increased significantly under no-tillage and intercropping rape mode,and intercropping rape was the most obvious,which was 10.93%～27.49%higher;no-tillage and intercropping rape mode both significantly reduced the soil capacity of jujube root layer from 0～40 cm and increased the soil porosity,but the effect on the capacity and porosity of soil layer from 40～60 cm was small;the electrical conductivity was significantly reduced by the intercropping rape mode from 0～60 cm,which was 7.21%,13.28%and 10.51%lower than clear tillage respectively,and 6.50%and 6.43%lower than no-tillage at 20～40 cm;intercropped rape In the 0～60 cm soil layer,intercropping oilseed rape significantly reduced the mode conductivity by 7.21%,13.28%and 10.51%compared with that of clear tillage,and by 6.50%and 6.43%compared with that of no-tillage in the 20～40 cm soil layer;intercropping oilseed rape significantly increased the total potassium content of the 0～20 cm,20～40 cm and 40～60 cm soil layers by 17.28%,13.90%and 20.74%compared with that of clear tillage and by 11.03%compared with that of no-tillage,and the whole potassium content of the 0～60 cm soil layer was significantly improved.No-tillage improved 11.03%and 13.19%respectively,and there was no significant difference in soil total potassium content between intercropped oilseed rape and no-tillage in the 40-60cm soil layer;in the 20-40cm soil layer,alkaline dissolved nitrogen(ADN),effective potassium(EK),and organic matter(OM)contents of intercropped oilseed rape increased significantly,and increased by 33.49%,15.53%,and 52.97%respectively compared with that of the clear-cutting soil;in the 0-60cm layer,the soil under the no-tillage treatment had the The content of quick-acting phosphorus was the highest.[Conclusion]Intercropping oilseed rape is a better farming mode for date palm orchards under the soil and climatic light conditions in Kashgar region.