摘要
调查了串珠藁本（ｌｉｇｕｓｔｉｃｕｍｍｏｎｉｌｉｆｏｒｍｅＺ．Ｘ．ＰｅｎｇｅｔＢ．Ｙ．Ｚｈａｎｇｓｐ．ｎｏｒ）在甘肃高寒阴湿区的分布、危害情况。经室内外研究，摸清了其生育期、块茎状节休眠习性与抗逆能力、田间出苗规律及开花、结实习性等生物学特性。通过不同药剂试验，筛选出了防除串珠藁本显著的绿磺隆、甲磺隆等除草剂。应用技术研究表明，小麦三叶期用１５ｇ／ｈｍ２喷雾效果好，方法简便、省工、省时，且对玉米、蚕豆、油菜等后茬作物安全；１９９３～１９９５年应用绿磺隆累计示范推广７．３５万ｈｍ２，防除效果达９２．２３％。与人工除草比较，增产小麦３８２．９５ｋｇ／ｈｍ２，副产物增加５７４．５ｋｇ／ｈｍ２。
Ligusticum moniliforme Z.X. Peng et B.Y. Zhang, sp. nov is a new variety of Ligusticum . Its distribution in Gansu and harmfulness were revealed through investigation. The biological characters of Ligusticum Moniliforme, such as growth period, dormant habits of stem tuber node, anti adversity, rule of emerging, and habits of flowering and producing seeds, were ascertained by indoor and outdoor studies. These characters provided a scientific base for making control policy and weeding methods. The different herbicide experiments proved that Metsulfuron methyl and Chlorsulftron can be selected to control Ligusticum Moniliforme remarkably. The results showed that the best weeding effect can be gained by spraying 15 g/hm 2 Metsulfuron methyl or Chlorsulftron at the stage of the third leaf of wheat. This control method not only was simple, save work, save time, but also safe to the suecessive crops such as corn and pea. The application of this control method was extended to 73 333 hm 2from 1993 to 1995. The weeding effects achieved to 92.23%. Comparing with the artificial weeding, the chemical weeding increased wheat yield by 375 kg/hm 2, and by products by 570 kg/hm 2. The economical profits were obvious.
出处
《西北农业学报》
CSCD
1996年第4期5-9,共5页
Acta Agriculturae Boreali-occidentalis Sinica
关键词
串珠藁本
生物学特性
化学防除
Ligusticum moniliforme
Biological characters
Chemical control
