In this article,four samplings from bud appearing to blossom period(80% flowering)were taken to determine their ratio of stalk to leaf,crude protein content and crude fiber content so as to study the influence of cutting phase to the leaf meal quality and set the proper cutting phase.

The effect of different application rates of fertilizer and cutting period on yield and quality of Brachiaria Grisebach was observed.

Focusing on the problems of fertilizer amount,planting density and cutting date in the production of silage corn CAU647,Quadratic Regression were used in this paper and under field experiment to study the regression equation of planting density,nitrogen amount and the date after tasseling stage with silage yield.

Study on the appropriate harvest date and harvest times of forage rye;

Effect of N fertilization level and defoliation date on Ca,P and Mg mineral concentration in Hybrid Pennisetum and their relationship to ruminant requirements;