The Study On The Utilization Of Sorghum-sudangrass Hybrid And Its Application Semi-arid Saline Area In Northern China

The bad natural environment restricts the development of farming and animal husbandry in the semi-arid area of Northern China.Especially,more serious and common soil salinization cannot guarantee the farming and animal husbandry production.In the semiarid and saline area of Northern China,in order to satisfy agriculture economic development needs,this study is based on cultivation and application of Sorghum bicolor X S.sudanense.One is to improve Sorghum bicolor × S.sudanense yield through cultivation technical measures/.The second is to improve salty soil physicochemical property and fertilizer through plough green manure.And the third is to increase the production and quality of Sorghum bicolor× S.sudanense through mix-ensiling Sorghum bicolor X S.sudanense and Alfalfa.The research explains that effect of different breeding quantity on the dry weight.The experiment exams and observes the plant height,growth rate,field density and biomass in June,2015.Aims to determine the most suitable breeding quantity,and utilizing Sorghum bicolor× S.sudanense as fertilizer mixed into soil,and analysis soil index of green-manure before and later,formulated to explore whether green-manure improves treats and three mix-ensiling treats(the ratios of Sorghum bicolor X S.sudanense and Alfalfa are 1:2,1:1,2:1,respectively)6?7 weeks later,comprehensive assessing the silage,such as organic,nutrition and ferment quality,being sure the most suitable mix-ensiling pattern to Improve the utilization value of Sorghum bicolor X S.sudanense.The results showed as following:(1)The most feasible breeding quantity is rank of 30?37.5kg/hm2,not over 37.5kg/hm2.(2)The mix-ensiling over the ratio,nutritional ingredient decrease,but ferment quality increase gradually,at the same level,nutrition value of the ratio 1:2 is highest.(3)Later green manure compared with before increases the organic and available P content significantly,but decreases total salt content,Green manure of Sorghum bicolor X S.sudanense benefits for the improvement of northern saline land to be extant.