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- Field weed community 田间杂草群落
- This species is adventive in many temperate countries as a field weed. 本种在作为一根田野杂草的很多温带的国家外来。
- Because the land reclaimed is not very long, field weed is a serious problem which affectes the flax production, results in difficulty to harvest by machine and low fibre qulaliy. 但该区域农田开垦年限较短,杂草基数大,种类多,严重的草荒,影响亚麻产质量和机械作业,束缚了该区亚麻的发展。
- The species richness, diversity and evenness of weed community in maize fields in Zhangjiakou and Chengde were higher than other regions, but the Simpson's index was relatively lower. 张家口和承德地区玉米田杂草群落的物种丰富度、多样性及均匀度较其它地区高，而优势度较低。
- Abstract: By using computer image processing technology, features of weed in the corn seedling field were analyzed, the field weed was recognized from the corn seedling, the weed position and growing state were found out. 文摘:利用计算机图像处理技术分析了玉米苗期田间杂草的特征量，识别出田间杂草并确定了杂草的位置和生长状况。
- Kyllinga brevifolia + Cyperus rotundus + Cynodon dactylon in Zhaoqing.The weed communities of 32 sample plots could be classified into 5 groups. 肇庆市以水蜈蚣+香附子+狗牙根为主二通过聚类分析可以将32个样点分成5个组。
- Crop rotation system and geographical factors determined the distribution of weed communities in main oilseed rape growing regions in Hubei Province. 轮作制度与地理因素决定了湖北省油菜主产区杂草群落的分布。
- An investigation on weed species biodiversity and host plants of vesicular arbuscular mycorrhiza fungi (VAMF) within weed communities in new developed fruit gardens was conducted. 本研究调查了红壤坡地幼龄果园杂草群落的物种多样性以及主要物种被VA菌根真菌的侵染率和侵染强度，分析了VA菌根真菌侵染与根际土壤磷素水平的关系。
- Experiment in the Rice Field Weed Control by Oxadiazon 12.5% EC 5%25?草酮乳油防除水稻田杂草试验
- The species composition and seasonal variations of the turf weed communities were investigated in Shenzhen with line intercept method,and all the data obtained were analyzed with cluster analysis. 用样线法调查了深圳市区不同管理类型草坪的杂草周年发生及分布情况,并用系统聚类法分析了各草坪杂草群落的发生规律。
- The results show that no significant difference was observed in composition of weed communities between plots receiving balanced NPK fertilization of organic manure or chemical fertilizer. 结果表明：N、P、K平衡施用时，无论是施用有机肥，或是施用无机化肥，田间杂草的种群组成相似；
- The field artillery pounded away at the for tress. 野战炮兵连续炮击那座要塞。
- The crowd cheered as the teams entered the field. 球队入场时观众们为之欢呼。
- All these indicated that L. radiata obviously changed the composition and structure of weed communities, and effectively controlled the growth of weeds. 说明石蒜改变了杂草的群落结构，有利于限制杂草的发生危害。
- On the map the drains of each field are laid sown. 地图上标有每一块地的排水沟。
- Right-handed batters usually hit to left field. 右撇子击球手把球打到左外野。
- The runaway horse was cornered in a field. 那匹跑掉的马在田地里被圈住了。
- Tent is used by camper and by soldier in the field. 露营的人和战地的士兵用帐篷。
- The children had a field day with their new toys. 孩子们玩新玩具玩得十分开心。
- An oil well blew out in the oil field. 油田里有一口油井发生井喷。
