1) Field weed community
田间杂草群落
4) Weed community in the cotton field
棉田杂草群落
5) weed community
杂草群落
1.
Effect of protective cultivation on weed community composition and species diversity
保护性耕作对农田杂草群落组成及物种多样性的影响
2.
Four weed community groups were divided in 31 sites, one of which was obtained with almost all soybean (com) stubble rape field sites dominated with Galium apalium, and three gro.
利用７ 级目测法调查了南京地区油菜田３１ 个样点的杂草优势度级，并以其重要值为指标，对３１ 个样点的杂草群落进行计算机模拟聚类分析。
3.
Digitaria sanguinalis+Acalypha australis+Cephalanoplos segetum+Setaria viridis weed community distributed in the cotton fields with the successive .
采用杂草群落和草害的数量研究方法，对江苏省沿海地区棉田杂草草害和群落的发生及分布规律进行了定量调查研究。
6) weed population
杂草群落
1.
Effects of wheat rotation and monocropping system on weed populations in wheat fields;
小麦连作、迎茬和轮作对麦田杂草群落的影响
2.
Effects of corn rotation and continuous cropping system on weed population;
玉米连作、迎茬和轮作对田间杂草群落的影响
补充资料：产业群落
是相关产业中相互依赖、相互合作、相互竞争的企业在地理上的集中。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条