survey and interview methods, the rice grain yield and nitrogen use efficiency were increased significantly after applying …

survey and interview methods, the rice grain yield and nitrogen use efficiency were increased significantly after applying …

of liquid organic fertilizer on time of tasselling, time of silking and grain yield of maize. Liquid organic fertilizer … significantly reduced the times of tasselling and silking, and increased grain yield of maize. Based on this study, it is … recommended that 151/ha of liquid organic fertilizer which produced 5.6tha’ in 2005 and 6.1tha’ of dry grain yield 2006 be applied …

of liquid organic fertilizer on time of tasselling, time of silking and grain yield of maize. Liquid organic fertilizer … significantly reduced the times of tasselling and silking, and increased grain yield of maize. Based on this study, it is … recommended that 151/ha of liquid organic fertilizer which produced 5.6tha’ in 2005 and 6.1tha’ of dry grain yield 2006 be applied …

impact of China's direct grain subsidies on grain yield, using the panel data pertaining to 29 provinces in the period 2004 …-2007; comparatively analyze the validity and limitation of policy factors of direct grain subsidies on China's grain yield. The results … show that at the present stage, the elasticity coefficient of impact of China's direct grain subsidies on grain yield is 0 …

model to analyze the general effect of "four agricultural subsidies" on grain yield, and the structural effect of "four … agricultural subsidies" on grain yield. Based on the F-test and Hausman test, we estimate the model using GLS or FGLS method. The … results show that "four agricultural subsidies" have significant positive effect on grain yield; the structural effect of …