'dicotyledon'

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1.dicotyledon;

来源：词友　最后更新：2009-11-12　收藏　编辑　历史　举报

2.Differences among peak wavelengthes and peak intensities can be used to distinguish woody broadleaf trees and coniferous trees, as well as herbaceous dicotyledon and monocotyledon.

利用峰的波长,荧光强度的差异可以将木本阔叶树、针叶树,草本双子叶及单子叶植物加以区分。

来源：词友　最后更新：2006-07-07　收藏　编辑　历史　举报

3.Seventy species of plant belonging to 36 genera of Gramineae and 9 species of dicotyledon were tested or their susceptibility to the virus cau-sing maize rough dwarf disease and their symptoms produced after insect(Laodelphax striatellus Fallen.) inoculations.

作者在1980～1981年,通过灰飞虱(Laodelphax Striatellus Fallen)接种,试测了36属70种禾本科植物和棉花等9种双子叶植物。

来源：词友　最后更新：2006-06-10　收藏　编辑　历史　举报

4.The preliminary biological tests show that most of compounds 6 have good herbicidal activities to monocotyledon Barnyard grass and dicotyledon Cole . Compound 6h, 2 methylthio 5 benzylidene 3 (3′ chloro benzyl) imino imidazoli 4 one exhibits 100% inhibition against Cole root and stalk, Barnyard grass root in 100 mg/L.

并初步测定了它们的生物活性,结果表明,此类化合物对双子叶植物油菜和单子叶植物稗草均表现出较好的除草活性,其中化合物2甲硫基5苯基亚甲基3(3′氯苄基)亚氨基4咪唑啉酮(6h)表现出较高的除草活性,在100mg/L浓度时对油菜根茎及稗草根的抑制率均达到100%。

来源：词友　最后更新：2006-10-18　收藏　编辑　历史　举报

尝试查询：dicotyledon　