1) weediness
[英]['wi:dinis] [美]['widɪnɪs]
杂草性
1.
【Objective】 To assess the potential ecological risk for weediness of transgenic soybean 40-3-2,which was introduced as production raw material for edible oil,and to verify the operation of clauses for weediness assessment of transgenic soybean in China.
试验证实了转基因大豆环境安全评价标准的杂草性条款具有可操作性。
2) resistant weeds
抗性杂草
1.
Through weeds invertigation, the paper has discussed the trends of the population evolution of the resistant weeds and reason.
通过杂草调查,论述了三江地区大豆田抗性杂草种群演变的趋势及原因,并对防除抗性杂草的有效药剂进行了大面积试验示范,为消灭大豆田抗性杂草提出理论依据。
3) weed
[英][wi:d] [美][wid]
恶性杂草
1.
Evaluation of 13 herbicides on control of weed Cyperus rotundus L. in sugarcane field;
13种除草剂对甘蔗田恶性杂草香附子的防除效果试验及评价
4) quarantine weeds
检疫性杂草
1.
For obtain the 1000 kernel weight data of quarantine weeds,Through inspecting weeds from 17ships of import grains in 15 months,seven species of quarantine weeds were intercepted.
为了对截获的检疫性杂草作千粒重的测定,科学提供这些检疫性杂草的千粒重数据。
5) Naturalized weed
外来性杂草
6) weed resistance
杂草抗药性
1.
It is very important and necessary to confirm flixweed resistance and its mechanism to tribenuron-methyl in order to control flixweed effectively and use tribenuron-methyl in a scientific, rational way and to prolong the lifespan of tribenuron-methyl in practice.
随着化学除草剂的大面积使用,农田杂草抗药性问题越来越严重。
补充资料：茶树抗性育种
茶树抗性育种
resistance breeding of tea plant
茶树抗性育种(resistanee breeding(，ftea plant)一种以选育杭性强的茶树新品种为主要目标的育种方法，包括抗病、杭虫以及抗早、杭寒等不利于茶树正常生长的外界因子的抵抗能力。中l月北方茶区里季多低湿干旱，冬季多低沮严寒，这个地区的茶树选种不仅要求优质高产，还必须有较好的耐旱和抗寒能力:中国南方茶区气候沮吸很润，利于某些病虫发生.所以在南部茶区必须l视茶树抗病和杭虫能力的育种。无沦南北茶区，都要咬视免疫品种的选育。 茶树抗性育种要从以下几个方面扮手:声“‘泛搜集国内外的抗源品种和野生种，建立抗病虫的种质库.利用现代化的人工气候，加速进行病虫人工诱发和鉴定:寻求茶树本身能抑制病虫生长的化学物质，并加以棋拟仿制;研究人工免疫和人造抗病性的技术等。但杭性与某些经济性状间存在着连锁关系.在育种目标日益全面要求下.在利用新类型亲本和新抗源时，必须密切注意它们带来的不良性状.打破抗性与不良性状的连锁.才能获得理想的结果。以西维时)
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