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我省地处北方寒区,年均气温4℃左右、植物生长期仅五个来月,人工牧草除了一些多年生的牧草可以推延至夏季(六、七月)播种而外绝大部分均以春播(四、五月)为宜。然而此季节正是忙季,很难安排种草。草原地区每年春旱,风沙严重,大面积的进行草地春翻春播极易造成风蚀沙化;夏季播种又因雨季淋漓,农机具下
The province is located in the northern cold zone, with an average annual temperature of about 4 ℃, the plant growth period of only five months, artificial grass except for some perennial forage can be postponed until the summer (June, July) sowing most of the spring sowing (April and May) is appropriate. However, this season is a busy season, it is difficult to arrange the grass. Spring drought every year in the grassland area, severe sandstorms, large areas of spring grass spring over spring can easily lead to wind erosion; summer sowing because of the rainy season, agricultural machinery with