[Objective] The study was conducted on the selection of organic nutrition-functional soil conditioners and the economic benefit of hybrid feeding sweet sorghum from application of it

in order to solve the bottleneck problem of grey brown desert soil that is characterized by weak water and fertilizer retention

low organic content and the successive low and unsustainable crop yield.[Methods] The ash brown desert soil in Suzhou District

Jiuquan City

Gansu Province was selected as experimental materials and field experiment was conducted.[Results] The amount of organic nutrition-functional soil conditioner was positively correlated with indices of porosity

aggregate

water holding

organic matter

available nitrogen

phosphorus and potassium

economic benefits and yield of hybrid feeding sweet sorghum

while was negatively correlated with soil bulk density and pH value. Soil bulk density and pH value decreased 4.10% and 8.27% as compared with that of conventional fertilizer. Total porosity

capillary porosity

non-capillary porosity

total water holding

capillary porosity water holding capacity and non-capillary porosity water holding capacity increased by 3.63%

3.60%

3.67%

3.63%

3.60% and 3.67%

respectively; organic matter

available nitrogen

phosphorus and potassium increased by 7.03%

0.37%

0.33% and 0.29%; fungi

bacteria

actinomyces

sucrose

phosphatase and polyphenol oxidase increased by 121.42%

34.69%

20.00%

61.79%

45.37%

36.00% and 63.23%

respectively. The grains per spike

grains weight

hundred-grain weight

yield

fertilizer profits and investment efficiency increased by 6.38%

4.17%

4.42%

4.04%

2 390 yuan/hm2 and 0.40 yuan/yuan

respectively.[Conclusion] The grey brown soil physical and chemical properties can be effectively improved by the application of organic nutrition-functional soil conditioners in the Hexi Corridor of Gansu Province

and the water holding capacity

hybrid feeding sweet sorghum yield increased as well.