Comparative Experimental Study On Rainwater Conservation Technology In Dryland Apple Orchard

Shanxi Province has a shortage of water resources,and water shortage has affected agricultural development.In this experiment,the tree garden is trimmed,mulched and covered with plastic substrate,and the grass is covered with four kinds of rain-collecting methods to provide a rain-collecting mode for the dryland orchard in the Loess Plateau of our province.A theoretical basis.Determination of soil water content: The water content of each month in the four modes is continuously deepened with the depth of the soil,and the water content is also continuously increased.Generally,the water content is the highest in July,followed by the third in March and the lowest in November.However,the soil water content in the mulching and mulching cultivation mode was higher than that in the other three models in March,July and November,and the soil moisture content was the highest in July.The growth of branches and branches and branches: in the four cultivation modes,the total amount of short branches and branches was the largest in the grass-growing mode,and the long-branched ridges had the largest amount,and the number of long branches and middle branches was relatively close.Determination of apple leaf growth index: The vegetative fresh/dry weight,water content,louver thickness and louver area indicators were higher than the remaining patterns in the biological substrate coverage mode.Followed by the ridge filming mode.Determination of chlorophyll content in apples: The chlorophyll content of the four models increased gradually from June to August,and each month in the biological matrix mode was higher than the rest.Followed by the natural grass pattern,the chlorophyll content is also higher.Chlorophyll content:biological matrix > natural grass > ridge mulching > tree tray renovation.Apple fruit quality determination: the best performance in the biological matrix mode.Comparison of apple production and economic benefits.Biomass reduces net profit due to higher input costs.The net income of the mulching film is higher than the biological matrix mode.The results show that the ridge-covering method has the highest comprehensive benefit and is most suitable for promotion in production.