冬闲田是指在秋粮收获后至来年春季作物播栽前一直空闲的土地。由于南方各地气候差异大,再加上耕作制度多样,冬季闲置的时间长短不一。长的可达8个月,如江西、湖北等省的一季稻区从9月底一直到翌年5月底;较短的也有3个月,如江西、湖北等省的双季稻区从11月底到翌年的2月底。利用南方冬闲田发展油菜生产,对提高后茬作物产量、增加油料供给、提高农民收入和美化农村环境都具有重 Winter fallow field refers to the field after harvest in the autumn harvest of crops until the spring before the crop has been idle. Due to the large differences in climate across the southern part of the country, coupled with the diversification of farming systems, the length of idle time in winter varies. Long as long as 8 months, such as Jiangxi, Hubei and other provinces of a quarter of rice from the end of September until the end of May next year; shorter also 3 months, such as Jiangxi, Hubei and other provinces double crop of rice from the end of November to The end of February the following year. The development of rapeseed production in the southern winter fallow field has a great impact on raising crop yield, increasing fuel supply, raising farmers’ income and beautifying the rural environment