河南西峡属粳稻区。前些年,稻茬小麦产量低,主要原因是在稻区播种小麦时期,常遇阴雨连绵天气,推迟了水稻收割期,影响了小麦适期播种。小麦常常从11月上旬开始整地播种,到中、下旬结束;加之稻田地寒,地温又逐渐变低,在越冬期,播种较早的田块麦苗能长出了3叶,播种较晚田间麦苗仅 Xixia, Henan is a japonica rice area. In previous years, the low yield of wheat in the paddy crop was mainly due to the rainy and rainy weather in the sown area of ​​rice and the postponement of rice harvest, which affected the proper sowing of wheat. Wheat is usually sown from the beginning of November to the end of the middle and the end of the season. In addition, the temperature of the paddy field is gradually decreasing. In wintering period, the wheat seedlings planted earlier can grow 3 leaves and sow later field wheat seedlings only