Effects of Different Fertilizer Modes and Levels on Rice Field Plow-free Throughout Straw Covered Autumn Potato

The effects of production and efficiency with different fertilizer types and levels on rice field plow-free throughout straw covered autumn potato was studied,the results showed that with basal dressing of organic fertilizer in sufficient quantity,growth stage would advanc distinctly,stress resistance would enhanc obviously and production would increas significantly.Based on applying appropriate organic fertilizer,with high levels of basal dressing of compound fertilizer,added potassium,and dressing nitrogen fertilizer at seedling stage,the economic traits,commodity rate and benefit were all better than that of 0.50∶0.20∶1.06 of NPK fertilizer modes.It was also indicated that the fertilizer formula of conventional cultivation was not suitable for rice field plow-free straw autumn potato cultivation.