1) Germplasm constitution
种质构成
2) species composition
物种构成
1.
Based on the species composition of lake ecosystem,a weighting method of the growth rate of phytoplankton(algae)-weighted growth rate is presented in this paper.
基于湖泊生态系统的物种构成,本文提出了一种浮游植物(藻类)生长率的加权计算方法──加权生长率法。
3) population composition
种群构成
1.
Investigation on population composition of rat-shaped animals and its parasitic fleas at seven ports in Heilongjiang province;
黑龙江七口岸鼠形动物及寄生蚤种群构成的调查
5) species forming
种群构成
1.
Objective To know the species forming of mosquitoes and their season growth and decay in Zhenjiang,and to provide scientific basis for preventing mosquitoes effectively.
目的了解镇江市蚊类种群构成及季节消长情况,为有效控制蚊虫提供科学依据。
2.
Objective To investigate the species forming of mesquitoes and their ecological distribution in Baoji city,and to provide scientific basis for preventing mosquitoes effectively.
目的调查宝鸡市蚊类种群构成及生态习性,为有效控制蚊虫提供科学依据。
6) population composing
种群构成
1.
Analysis of four pest growth and decay trend and population composing in Qingyuan downtown area in 2004~2005;
2004~2005年清远市区“四害”密度消长及种群构成分析
补充资料:扁桃种质资源(germplasm resources of almond)
扁桃种质资源(germplasm resources of almond)
具有一定的遗传物质,在扁桃生产和育种上有利用价值植物的总称。扁桃在世界约有40种。原产小亚细亚、叙利亚、伊朗以至中细亚一带。人工栽培的仅为普通扁桃(Prunus communis Fritsch.)。扁桃主产国目前所用的栽培种多为杂交种。中国新疆少量扁桃栽培中包括有数十个农家品种和类型。中国的几种扁桃野生种均为灌木型。主要分布在浅山带阳坡、半阳坡和开阔谷地。喜光、耐旱、耐瘠薄土壤,能在砾土、砾质土、石壁上生长。移栽不易成活,通常用种子繁殖主要的种有:蒙古扁桃(Prunus mongolica Maxim.)、西康扁桃(P.tangutica Korsh.)、长柄扁桃(P.pedunculatus Pall.)、矮扁桃(P.tenella Rehd.)。
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