Characteristics of soil seed banks of Crofton weed and their effects on Seedlings 紫茎泽兰土壤种子库特征及其对幼苗的影响
The growth character of Crofton weed in mixture transplanting with different green bristlegrass perennial ryegrass and Trifolium repens under different management conditions was studied. 以狗尾草、黑麦草、白三叶为材料研究了混栽其中的紫茎泽兰在不同肥力条件下的生长状况。
Crofton Geometrical Recognition of Character 字符的Crofton几何识别法
Phenomenon and mechanism of the invasion of Crofton weed in Panxi region, Sichuan Province 四川攀西地区紫茎泽兰的入侵现象及入侵机理
Biological characteristics of Crofton weed, an exotic invader, and the ways to prevent its invasion 外来入侵物种紫茎泽兰的生物生态学特征与防治途径
Study on Medium Density Fiberboard of Crofton Weed 紫茎泽兰制造中密度纤维板的研究
Relative germination rate, promptness index, vigor index of crofton weed ( Eupatorium adenophorum Spreng.) from 14 populations were tested under different osmotic potentials ( PEG6000) to evaluate their drought resistance using the fussy subordinate function. 以不同渗透势的PEG(6000)溶液模拟水分胁迫条件,通过相对发芽率、萌发抗旱指数、活力指数3个指标,研究了14个不同地理种群紫茎泽兰(EupatoriumadenophorumSpreng.)
In Integral Geometry, by utilizing the support function and convex set, both area formula and perimeter formula of convex set are gotten. 在积分几何范围内,用直线的广法式表示及积分几何中的Crofton方向,得出了离散图象周长的计算公式,并且利用凸集的支持函数导出了凸集的面积和周长的计算公式。