1.
Barn yard grass( Echinochloa crus-galli) and day flower( Commelinacommunis) were the most abundant weeds.
其中前7种相对多度达20以上，可视为当地大豆田的优势杂草。
2.
Responses of Photosynthetic Characteristics of Wheat at Booting Stage and Weeds Species to Simulated Photosynthetic Radiation
孕穗期冬小麦及田间优势杂草光合特性对模拟光强的响应
3.
Allelopathy of the Dominant Noxious Weed Ligularia Virgaurea on Pasture Plants in Psychro-grasslands;
高寒草场优势毒杂草黄帚橐吾对牧草化感作用的研究
4.
Genetic Analysis and Heterosis Utilization between Sorghum and Sudangrass;
高粱与苏丹草的遗传及其杂种优势利用的研究
5.
The Investigation and Medicament Prevention of the Advantage Plant of Weed in Turf in Huaibei Area of Anhui Province
安徽省淮北地区城市草坪杂草优势种群调查及化学防治
6.
crossing and heterosis of animal
杂交和杂种优势（家畜）
7.
The Research of Forecast on Tobacco Combining Ability and Heterosis Based on Molecular Markers;
烟草亲本分子标记预测配合力及杂种优势的研究
8.
Studies on Cytogenetics and Heterosis Utilization of Crossing between Sorghum [Sorghum Bicolor (Linn.) Moench] and Johnsongrass [Sorghum Halepense (Linn.) Pers];
高粱与约翰逊草细胞遗传学及杂种优势利用研究
9.
Studies on the Perennial Utilization of Heterosis between Sorghum and Johnson Grass and the Analysis of SSR Markers;
同源四倍体高粱与约翰逊草SSR分析及杂种优势多代利用研究
10.
Heterosis Comparison in Five Hybrids of Strong Heterosis Upland Cotton
五个强优势陆地棉杂交种的优势比较
11.
heterosis utilizationin plants
杂种优势利用（植物）
12.
Utilization of the High Quality Hybrid Pennisetum
优质牧草杂交狼尾草的利用研究初探
13.
Studies on the Heterosis and Combining Ability of Cotton Hybrids in Resistance to Pink Boll-worm;
抗虫杂交棉的杂种优势及配合力研究
14.
The Heterosis Analysis of Two Types Castors
两种类型蓖麻杂交种杂种优势的分析
15.
Grouping of Parental Lines and Establishment of Heterotic Patterns in Indica Hybrid Rice (Oryza Sativa L.);
杂交灿稻亲本杂种优势群的划分及杂种优势模式的构建
16.
Research Status and Development Trend of Heterosis of Cotton
棉花杂种优势的研究现状及发展趋势
17.
Preliminary Analysis on Reason and Trend of Weed Community Evolution in Paddy Field
水稻田杂草群落演化原因及趋势浅析
18.
Partition of Parents Group, Analysis of F_1 Heterosis and Use of F_2 in Hybrid Wheat;
杂种小麦亲本优势群划分及其F_1优势分析与F_2优势利用