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在Saskatchewan影响作物产量的主要障碍是变化无常而有限的水的供应。这种障碍虽将在翌年夏季的休耕轮作缓解一部分,但春小麦休耕轮作所采用的21个月休闲期会导致土壤严重退化。在Saskatchewan的Swift Current的一块中等土壤结构的AridicHaploboroll上进行了一项长达10年之久的研究,以评估利用收割留茬积存融化雪水的优点。因为该地区从深秋到早春降水量平均只有89mm,且1/3的年降水量是以雪的形式降落。种植的春小麦,生长在免耕的土地上,渗入土壤中的水分,34%被矮茬吸收,50%被高茬吸收。利用高茬保存水分,10年平均为13mm,但在早春土壤极其干旱时可达48mm。9年中留茬地平均增产79kg/hm~2,其中3个年份增产超过125kg/hm~2。
The main obstacle affecting crop yields in Saskatchewan is the volatile and limited supply of water. Although this obstacle will be partially mitigated by the fallow rotation in the summer of the following year, the 21-month leisure period used for the fallow rotation of spring wheat will result in serious soil degradation. A 10-year-long study conducted at AridicHaploboroll, a medium-soil structure in Swift Current, Saskatchewan, to assess the advantages of using stored stubble to retain molten snow. Because the average rainfall in the area from late autumn to early spring is only 89mm, and 1/3 of the annual precipitation is in the form of snow. Growing spring wheat, grown on no-till soil, infiltrated into soil, 34% absorbed by stubble and 50% stubble. Stored with high stubble moisture, 10-year average of 13mm, but in early spring when the soil is extremely dry up to 48mm. The stubble yield increased 79kg / hm ~ 2 on average in 9 years, of which, the yield increased more than 125kg / hm ~ 2 in three years.