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库尔勒垦区,以春小麦为主要粮食作物。由于基本苗数不足,每亩苗数少则不到10万,最多不超过23万,所以单产很低。 出苗率低的原因,在本地区主要是早春土地泛浆呈“春潮状态”(严重返潮)。泛浆在土壤全部解冻后约三月十日左右开始,延续10—15天。这时,正是春小麦种子吸水、萌动、发芽、出土时期,由于土壤水分过多、地温低、通气不良,淹害与盐害双管齐下,造成烂种。针对上述情况,要提高出苗率,必须注意下列措施:
Korla reclamation area, with spring wheat as the main food crops. Due to the lack of basic seedlings, less than 100,000 seedlings per acre, up to no more than 230,000, so the yield is very low. The reason for the low rate of emergence is that the spring flood is mainly in the state of “spring tide” (severe dampness) in the region in early spring. Pan-thaw in the soil after all thaw about March 10 or so, for 10-15 days. At this time, it is spring wheat seeds water absorption, germination, germination, unearthed period, due to excessive soil moisture, low ground temperature, poor ventilation, salt and salt damage two-pronged, resulting in rotten species. In view of the above situation, to improve the emergence rate, we must pay attention to the following measures: