Xiaoyan 6 did not resist wheat aphids and wheat yellow dwarf.
小偃6号既不抗蚜虫，又不抗小麦黄矮病。
A method for mass culture of wheat aphids was developed using wheat seedling as forage.
介绍利用水培麦苗大量饲养麦蚜的技术。
Undoubtedly, it provided new idea with harmless control of wheat aphids and wheat green production.
为麦蚜无害化防治和小麦绿色生产提供新思路。
Occurring and harming of the wheat aphids have not decreased, and there is a more serious trend instead.
麦蚜的发生危害没有减轻，反而有日趋严重的趋势。
This indicated a satisfactory practical value of this model in forecasting the occurrence of wheat aphids in the earing stage.
证明该模型对预测小麦穗期蚜虫发生程度有较好效果。
The effect of several pesticides on wheat aphids and their natural enemies as well as on pests and natural enemies population in maize field was tested indoors and in the field.
在室内和田间测试了几种杀虫剂对麦蚜、天敌及后茬玉米田主要害虫与天敌种群的影响。
Aphids belonging to the order Homoptera is one the most important pests in wheat production.
属于同翅目害虫的蚜虫是小麦生产中的重要害虫之一。
However, there are rare researches on the resistance to aphids and mechanism of the spring wheat until now.
然而，目前关于春小麦抗蚜性及其机理的研究却不多见。
The tannin contents of different wheat varieties were significantly different, but showed no significant correlation with the fecundity of aphids.
单宁含量在不同抗性品种(系)间存在显著差异，其含量变化与产蚜量无显著相关。
The tannin contents of different wheat varieties were significantly different, but showed no significant correlation with the fecundity of aphids.
单宁含量在不同抗性品种(系)间存在显著差异，其含量变化与产蚜量无显著相关。
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