由于我区春季气温低和我场灌水困难,土壤水分不足,葡萄扦插一般成活率不高,苗木生长不良。利用温床或火炕催根,虽有助于提高成活率和苗木质量,但比较费工。有时催根后插穗虽形成愈合组织,但沙质土壤保水力差,插穗仍不能很好生根抽枝。1979—1980年,我们试用塑料薄膜覆盖扦插葡萄,由于提高了土温和改善了土壤水分状况,插穗发芽生根都较早,苗木生长量也显著增加,给我们在葡萄育苗方法上提供了一条新途径。试验是在小面积(5米长,3米宽,即 Due to the low temperature in spring in our district and the difficulty of irrigation in my field, the soil moisture is insufficient, the average survival rate of grape cutting is not high and the growth of seedlings is poor. The use of hotbed or kang root, although it helps to improve the survival rate and seedling quality, but more labor. Although after the root cause of cutting although the formation of healing tissue, but poor soil water retention, cuttings still can not root well shoots. From 1979 to 1980, we experimented with plastic film to cover cuttage grapes. Because of increasing soil temperature and improving soil moisture status, cuttings germinated earlier and the growth of seedlings significantly increased, which provided a new way for grape seedling raising . The test is in a small area (5 meters long, 3 meters wide, ie