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本试验于1978—1982年先后在青海省玉树县结古地区(海拔3700米)和共和县切吉地区(海拔3250米)两个气候条件不同的试点上分别进行。结果表明,覆盖播种在当年能多收一茬一年生饲草,但不仅对无芒雀麦的生长发育产生严重不良影响,而且还影响第二年的产量。就三年期间单位面积上生产的饲草总量来说,在降水量较多(年均488.8毫米)、日照时数较少(2476.6时.年)的结古地区增产不显著,而在降水少(215.3毫米),日照长(2660.6小时·年)的
The experiment was carried out in 1978-1982 at two different climatic conditions, namely, the Jigu area (3700m above sea level) in Yushu County, Qinghai Province and the Cheqi area (3250m above sea level) in Gonghe County. The results showed that the coverage of sowing in the current year can take over a year of annual forage grass, but not only on the growth and development of the Bromegrand serious adverse effects, but also affect the second year of production. For the total amount of forage produced per unit area during the three-year period, there was no significant increase in the amount of forage production in the Gugu areas where the precipitation was relatively high (488.8 millimeters annually) and the number of sunshine hours was relatively low (2476.6) Less (215.3 mm), long sunshine (2660.6 hours · year)