shows that in autumn precipitation profusion, soil moisture abundance, winter air temperature on the high side, the year of precipitation distinctness lack, adopt live through the winter plastic pellicle mantle can holding soil reservoir sluice maximum.

• 认为：在秋季降水充沛、土壤收墒充足、冬季气温偏高、降水明显偏少的年型，采取越冬覆盖能最大限度保持土壤水库蓄水。