Effects Of Intercropping Oat And Common Vetch On Forage Yield And Quality And Soil Characteristics

In order to study the effects of different proportions of oats on the yield and soil properties of oats and arrows,Oat and vetch as the material,the optimal model of intercropping ratio was determined:1:1,1:2,1:3,1:4,2:1,3:1,4:1 and oat and common vetch,The results showed that the yield and quality of oats and arrows were studied,and the soil properties were evaluated.The results show:(1)The total yield of oats and common vetch was higher than that of wild common vetch.D:Y=1:4,D:Y=1:2,followed by 2015,and the highest yield and hay yield were obtained in each period.2015 and 2016 years D:Y=1:3 treatments were more than 29.4%,41.95%and 18.7%and 104.3%,respectively,compared with oats and common vetch.(2)The crude protein content of common vetch was significantly higher than that of oat,and the maximum value appeared at 80 days after sowing.The crude protein content of D:Y=1:2 was higher than that of other treatments,Respectively,increased by 41.5%,14.13%;23.5%,15.29%.The neutral and acidic detergent fibers of oats and common vetch were reduced with the growth period,and the content of neutral and acidic detergent fibers was the lowest at 110 days after sowing:D:Y=1:3 treatment.(3)D:Y=1:2 treatment was the highest in the soil treated with D:Y= 1:2,D:Y=1:3 treatment,D:Y=1:2 treatment in 2015,D:Y=1:3 treatment,in 2016,D:Y=1:3 treatment of the highest total phosphorus content,D:Y=1:2 treatment followed,significantly higher than oats and arrows pea single processing;And the maximum available N content in 2016 occurred at Y:D=1:4 treatment.The content of available P in soil treated at 150 days and no significant difference was found at 110 days after sowing,and the highest value appeared in D:Y=1:2 treatment,D:Y=1:3,D:Y=1:4 treatment followed,2016 years after sowing 80 days,the highest content of soil available phosphorus treatment is D:Y=1:3,After 110 days,the highest available phosphorus content in the soil treatment was D:Y=1:2 treatment.The highest treatment rate of soil available potassium in 2015 and 2016 was D:Y=1:2 treatment,followed by D:Y=1:3 treatment,indicating that oat and common vetch intercropping could improve soil fertility.(4)D:Y=1:2 treatment could increase soil catalase and urease activity,D:Y=1:3 treatment;D:Y=1:3 treatment could improve soil sucrase and soil alkaline phosphatase activity,The soil microbial biomass carbon and nitrogen content were higher.(5)In order to improve the soil environment,D:Y=1:2 treatment and D:Y=1:3 treatment are suitable.In contrast,D:Y=1:2 treatment is more suitable for popular application in the northern foot of Yinshan and similar areas.