Stranler’s geomorphologic erosion circulation theory, the present paper carries a quantitative study on the development stage of debris flow ravines in Daqu basin of Sichuan.

The parameter of growing degree days in different development stages was quantified and different development stages were predicted systematically.

The responses of antioxidant defense system at different developmental stages of spring wheat to gradual drought stress in field;

Studies on optimum pH values of artificial diet at different developmental stages of silkworm ( Bombyx mori );

Correlation between the nutritive composition and developmental stage of Teleoqzyllus derelictus;

To probe into the regularity of nutrient requirement of Red Global grape and realize balance fertilization of it,the distribution and concentration variety of N,P,K of every growth period in different organ were studied by random sampling and laboratory analysis.

The experiment of eight sowing date with four early-mature varieties was carried out to re- search the law of growth stage and relationship between the law of growth stage and air temperature.

Study on the carbon storage and distribution of Pinus massoniana Lamb plantation ecosystem at different growing stages;

Carbon content and carbon storage of Phoebe bourmei plantation of different growing stages were measured.

The carbon content,carbon storage and annual carbon net fixation of Chinese fir of different growing stages were measured.