The making of PGPR bacterial fertilizer and its effect on the height of three gramineous forage crops in seedling stage in alpine region;

The establishment experiment of annual mixed artificial grassland in alpine region;

A study on techniques of oat cultivation and production in the alpine region;

Primary report of perennial legume introduction trial in alpine pasture of Minxian County;

Lolium multiflorum introduction to alpine pasture land;

Unreasonable industry structure is the bottleneck which constrains the development of alpine pasture economy.

49°N,the alpine pastoral area of northwestern Tibet is known as the ridge of the roof of world with a mean elevation of 4500 m.

In order to verify Qinghai fine-wool sheep’s reproductive capacity in alpine pastoral area,the pregnancy rate,the litter size,the survival rate of lambs and the lamb birth weight of different groups of Qinghai fine-wool sheep between 2.

As far as the conditions of primarily cultivated forage legumes lack in Northwest Sichuan alpine pastoral regions,some reasons are probed into;and comprehensive solutions are also put forward.