文献类型： 会议论文

第一作者： W. D. Zhu

作者： W. D. Zhu ¹ ; C. X. Zhang; Y. X. Qian; F. X. Wei;

作者机构： 1.Hubei Academy of Agricultural Sciences, Wuhan 430064

关键词： hubei province;cotton;noxious weeds;integrated management

会议名称： The 18th Asian-Pacific Weed Science Society Conference v.2

主办单位：

页码： 858-867

摘要： According the survey from 1986 to 2000, there were 64 kinds of main cotton field weeds in Hubei, which belong to 25 families. Among them Digitaria sanguinalis (L.) Scop, Eleusine indica (L.) Gaertn and Cyperus rotundus L. were the principal populations. A great amount of weeds existed in loam, where's a small quantity of them in sandy soil. There were less weeds in the cotton field of close-plant in narrow-row than that of the sparse-plant in broad-row, there were less and less weeds in cotton fields covered with plastic film as cotton was at the medium and later stage. The rotation of water-field crops and dry-field crops can sharply reduce weeds, change its population structure and delay its sprout climax. The 15 kinds of herbicides were tested in cotton fields, the results were as the following: Setaria virid (L.)Beauv was effectively controlled with 1500g fluometuron (80% Wettable Powder) and 3000ml alachor (48%) or 15000ml Dual (72%) for the soil treatment per hectare, or 900mlNabu(12.5), 600ml haloxyfop (12.5%) and 600ml fluazifop-butyl (35%) for the stem treatment. The control-effectiveness on Digitaria sanguinalis (L) Scop was more than 90% with 1500-4500ml Amchem 750-2250ml Dual and 1500-2250ml trifluralin for the soil treatment. It shows sound control effectiveness on Cyperus rotundes (L) with 930-1830ml glyphosate (41%). The fine treatment of field (such as careful cultivation and harrow) can also improve the control-effectiveness of herbicides.

分类号： S3