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1.秋播克服了春播遇到的春旱问题 经过了一个降雨相对集中的夏秋后,秋季土壤中的含水量相对较高,而且由于秋季气温逐渐降低、日照时间缩短,减少了土壤水分的蒸发。因此土地的墒情一般在秋季都要好一些,比较容易造墒和保墒。所以在灌溉条件差的地方,种植牧草的播种期最好选在秋季。当然在有灌溉条件的地方,春播也是可行的,特别是一些一年生的牧草,其生长期就是4月初到11月上中旬,只能在春天造墒播种。
1. Autumn sow overcome the spring drought encountered spring problems After a relatively concentrated rainfall in summer and fall, autumn soil moisture content is relatively high, but also due to the gradual decrease in autumn temperatures, shorter sunshine time, reducing the evaporation of soil moisture . Therefore, the soil moisture content is generally better in the fall, easier to make moisture and moisture. Therefore, in poor irrigation conditions, planting the best selection of forage in autumn. Of course, spring planting is also feasible where irrigation conditions are available. In particular, some annual forage grass grows from early April to mid November and can only be planted with moisture in spring.