1) weed species
杂草种类
1.
Turf weed species in north Hunan and their distribution and harm;
湘北地区草坪杂草种类、分布及其危害的评价研究
2.
Investigation of the weed species,frequency and abundance in Cynadon dactylon(L.
通过对新农1号狗牙根和喀什狗牙根制种田内杂草种类、频度、密度及多度进行调查和统计分析,结果表明:杂草种类达17科61种,其中菊科杂草15种,占杂草总数的24。
2) species of weeds
杂草种类
1.
The results showed that there are 38 species of weeds belonged to 18 families.
2002年7月-2003年6月对西宁地区草坪主要杂草种类和危害情况进行了调查。
3) Forbs component species
杂类草组分种
4) weed population
杂草种群
1.
Important values of 20 weed populations belong to 19 genera,8 families in wheat fields of Nanjing City and Chuzhou City were investigated,and the principal component analysis (PCA) of main weed populations were conducted.
对江苏省南京市和安徽省滁州市麦田杂草群落进行了调查,测定了隶属8科19属的20种杂草的重要值,并用主成分分析的方法,研究了主要杂草种群在群落中的地位。
5) weed seeds
杂草种子
1.
Species and dynamics of floating weed seeds in paddy field;
稻田水面漂浮的杂草种子种类及动态
2.
The species and number of weed seeds that dispersed by irrigation water were recorded and counted,the weed communities on the ridge of the paddy field and in surrounding habitats of the ditch were surveyed,and they were compa.
选择典型稻作区,对灌溉水流传播的杂草种子的种类和数量进行取样调查,并与田埂、灌溉水渠周围生境、下茬麦田的杂草群落及稻田土壤杂草种子库进行比较分析,以研究自然条件下灌溉水流传播的杂草种子与土壤杂草种子库及其他生境杂草群落间的相互关系。
3.
Under the condition of constant temperature at 25±1℃ and 12 hour light/d,the effects of paclobutrazol on germination of 5 dicotyledonous weed seeds in orchard,which are Pharbitis purpurea(L.
等5种双子叶果园有害杂草种子萌发的影响。
补充资料：1,3-二氧杂草
CAS: 505-65-7
分子式: C5H10O2
分子质量: 102.13
沸点:119℃
中文名称:1,3-二氧杂环庚烷；1,3-二氧杂草
英文名称: 1,3-Dioxepane；tetramethylene formal；[1,3]Dioxepan
分子式: C5H10O2
分子质量: 102.13
沸点:119℃
中文名称:1,3-二氧杂环庚烷；1,3-二氧杂草
英文名称: 1,3-Dioxepane；tetramethylene formal；[1,3]Dioxepan
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