论文部分内容阅读
红豆草自1980年在固原县试种以来,发展较快。但红豆草在固原的越冬性能表现不佳,常有冻害发生。固原县地处北纬35°31′～36°39′,东经106°～107°,海拔高度和气候、土壤等自然条件变化较大,地貌变异范围亦广,加之栽培技术措施不完善,因此,红豆草在固原县的越冬状况表现不一。我们以固
Since the soybean was planted in Guyuan County in 1980, it has developed rapidly. However, overwintering performance of sainfoin in Guyuan is not good, and frost damage often occurs. Guyuan County is located at latitude 35 ° 31 ’~ 36 ° 39’ and longitude 106 ° ~ 107 ° longitude. The natural conditions such as altitude, climate and soil vary greatly in Guyuan County, and the range of topographical variation is wide. In addition, the technical measures of cultivation are not perfect, Wintergrass in Guyuan overwintering conditions. We are solid