进入21世纪,江苏省镇江市大面积推广早熟晚粳水稻,水稻单产明显提高、总产稳定,但也带来了新的矛盾。一是由于水稻腾茬晚,大面积小麦播期推迟到11月15～30日,造成迟熟、产量不稳。二是小麦迟熟导致水稻播栽推迟,由于大面积水稻为机插、旱直播方式,更推迟了水稻栽种时间,加大了水稻高产稳产的风险。稻 In the 21st century, large-scale popularization of early-maturing late Japonica rice in Zhenjiang City, Jiangsu Province, yields significantly increased yield and stable output, but also brought new contradictions. First, due to late rice stubble, large-area wheat sowing was postponed to November 15 to 30, resulting in late maturity, yield instability. Second, the late maturing of wheat led to the delayed sowing of rice. Because a large area of ​​rice is inserted and droughts, it delayed the planting time of rice and increased the risk of high and stable yield of rice. rice