苜蓿田间杂草综合防除试验

在一项苜蓿田间杂草防除试验中,综合运用下述六项措施,组成六个处理组。这六项措施是:①在苜蓿播种前清除地面杂草,深耕细整土地;②在早秋温度和墒情适宜时窄行条播苜蓿;③当苜蓿生长至初花期或达到经济利用期及时刈割,并连同杂草一起割净;④在苜蓿行条施磷肥;⑤间播一年生或多年生禾本科牧草;⑥在越冬前后及每次刈割牧草后中耕苜蓿。试验结果表明,播前精细整地、早秋适时播种、窄行条播以及及时刈割苜蓿并一同除净杂草,能有效地防除苜蓿田间的杂草。试验结果也表明,间播苇状羊茅的处理组的苜蓿产量显著高于其它处理。

An experiment in comprehensively controlling weeds in an alfalfa field

In an experiment in comprehensive controlling weeds in an alfalfa field,the authors grouped the following six measures into six treatments. The measures included:clearing the weeds in the field before sowing and deep-tilling and meticulously preparing the field) narrow-row drilling alfalfa when the temperature and the soil moisture content were suitable in early Autumn completely cutting the alfalfa and weeds without delay when alfalfa grew into the period of early blooming or economic availability) applying phosphate fertilizer between the alfalfa rows) oVer-drilling annual or prennial forage grasses) intertilling the alfalfa field before and after winter and after each cutting.The results showed that the treatmeat could effectively control the weeds in the alfalfa field in which meticulously preparing the field before sowing,narrow-row drilling alfalfa in early Autumn and completely cutting the alfalfa and weeds simultaneously without delay Were utilized,and also showed that the treatment could result in a higher production of harvested alfalfa than the other five treatments in which reed fescue was applied.