China's Yangtze River drainage area is the main producing areas of rapeseed, and Hubei province is truly the largest rape production and rapeseed commodity distribution center.
长江流域是我国油菜籽的主产区，而湖北是名副其实的全国油菜生产大省和商品油菜籽集散地。
The prevalence of disease and insect pest is one of the factors, which restrict the yield in rape production.
在油菜生产中，病虫害的发生是油菜高产稳产的限制因子之一。
The prevalence of disease and insect pest is one of the factors, which restrict the yield in rape production.
在油菜生产中，病虫害的发生是油菜高产稳产的限制因子之一。
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