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利用塑料薄膜覆盖栽培甜菜,可以大 幅度提高地积温及保水提墒,改善土壤理化性状,有利于甜菜生长发育,一般可提高根产量40％以上。但是,地膜覆盖栽培甜菜,在黑龙江垦区仍属一项新技术,其适宜的技术方法尚未全部配套,因而造成增加成本又未提高产量甚至减产的情况亦不鲜见。通过我们试验及调查发现,地膜栽培甜菜目前失败的原因尽管不尽相同,但主要是保苗问题,只要能在保苗上达到设
The use of plastic film covered beet cultivation, can greatly increase the soil temperature and water retention entropy, soil physical and chemical properties to improve, is conducive to the growth of sugar beet, can generally increase the root yield of more than 40%. However, the cultivation of sugar beet mulching is still a new technology in the reclamation area of Heilongjiang Province, and its suitable technical methods have not yet been fully matched. Therefore, it is not uncommon for sugar beet to increase costs without increasing production or even reducing output. Through our experiments and surveys found that although the reasons for the current failure of mulch cultivation of sugar beet is not the same, but the main issue is to maintain seedlings, as long as the seedlings can be reached