Reconsideration of saturated D-optimal design A MATHEMATICAL MODEL OF COTTON COMPENSATION FOR COTTON BOLLWORM DAMAGE QUANTITATIVE EFFECTS OF MAIN CULTIVATION FACTORS ON SHARP EYESPOT OF WHEAT Agronomic Standardization of Gynostemma pentaphyllum(Thunb.)Makino THE EFFECTS OF N, P AND K FERTILIZER APPLIED IN PULP BAMBOO STAND Study on Induction Embryogenic Callus of Larix principis-rupprechtii by 311-A Regression Design Weed-suppressive effect of phenolic acids The Optimal Models of High-Yields with Fertilization and the Structure of Moso Bamboo Stands for Culm-producing Studies on Optimizing Production of Wasabi Plantlet Studies on Optimizing Production of Wasabi Plantlet THE SYNTHESIZED ECOLOGICAL EFFECT OF RICE DENSITY AND NITROGEN FERTILIZER ON THE OCCURRENCE OF MAIN RICE PESTS