大庆市三环企业总公司五牧场是风砂土、盐碱地,十年九春旱,春播不易保全苗。过去又一直沿用以铧式犁为主连年进行翻耙的整地方法,耕深要求(18～20厘米)不易控制,常把耕层下肥力差的黄土翻上来,耕翻造成的开闭垄(“减产沟”)一般占耕地面积的2%～3%(多者可达5%),此处常使作 Third Ring Road, Daqing City Corporation Ranch wind farm is sandy soil, saline, drought ten years nine spring, spring sowing is not easy to protect the seedlings. In the past, the method of site preparation for turning harrows, which are mainly based on plowshare, has been used in the past. The requirements of deep plowing (18-20 cm) are not easy to control and the loess with poor fertility on plow layers is often turned upside down. “Production ditch ”) generally accounts for 2% ~ 3% of the cultivated area (more than 5% of the total), where often