the area percentages of temperate steppe type, temperate meadow steppe type, lowland meadow type, marsh type and temperate forage improved grassland are separately 85.11%, 1.23%, 12.19%, 1.19% and 0.28%.
After shallow ploghing in spring, sowing anual grain is an effective means, which can increase the economic benefit of the improved grassland and has no bad influence on the growth of Leymus chinensis .
Surface runoff of the improved pasture was reduced by 13.14%,and soil erosin was reduced by 28. 08%,This method could provide scientific basis for steeplahd pasture improvement on the hills and ravine of the Loess plateau.
Astragalus adsurgens used to improve grassland has had an average per mu fresh forage production of 671.3 kg within 8 years, while Onobrychis viciesolia used to improve grassland has had an average per mu fresh forage production of 1 035.4kg, having an increase of 5.7 times and 9.4 times as high as those prior to the wasted slope improvement with an apparent controlling benefit obtained.