我县水田双季稻主要是油稻稻和肥稻稻三熟制。这是在长期耕制改革中逐步形成的基本制度。油稻稻油菜为后季早稻早让茬，历史上油菜绝大多数是选用白菜型“五花籽”品种，采用直播方法种植。由于五花籽油菜低产、不抗病，常年油菜籽亩产仅SO公斤左右，而且波动性很大。为争取油 Paddy rice paddy fields in our county are mainly three types of paddy rice and paddy rice. This is a basic system that has gradually taken shape in the long-term farming reform. Oilseed rape is the first crop of early rice in late second season. Historically, the vast majority of oilseed rape has used the “five-flowered” variety of cabbage and is planted by direct seeding. Due to the low yield of non-woven rapeseed, not disease-resistant, perennial canola yield only about SO kg, but also great volatility. To fight for oil