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In addition, the primary choice of resistance to Bt of rice stem borer is conducted through artificial diets of rice stem borer.

另外，本文利用二化螟人工饲料对二化螟抗Bt品系进行了初步的选育。

But on the natural stem borer infestation condition, the improved 93-11 contained Bt gene and its hybrid was not damage by stem borer.

在自然诱发螟虫条件下，带有Bt基因的株系及其杂交种没有受到螟虫危害。

Rice stem borer; artificial diet; orthogonal design; key factors; rice stem borer resistance to Bt

二化螟；人工饲料；正交试验设计；关键因子；抗Bt品系

In second generation, the result is contrary.4. The results of the two orthogonal designs of artificial diet of rice stem borer both indicate that sucrose and wheat germ flour are key factors of survival days of rice stem borer.

二化螟人工饲料两次正交试验的结果均表明，蔗糖和麦芽粉是影响二化螟幼虫历期的关键因子，水稻茎粉、麦芽粉、酵母粉和稻糠粉是影响二化螟幼虫成活率的关键因子，水稻茎粉是影响二化螟蛹重的关键因子。

The present investigations show that Bt rice possesses high efficiencies for controling rice stem borer, yellow stem borer and rice leaf roller, and there are no significant differences in growth and development of non-target organisms, such as rice planthoppers, leafhoppers and predators, and the stability of arthropod community structure between Bt rice and conventional rice paddy habitats.

现有的研究表明，Bt水稻对二化螟、三化螟和稻纵卷叶螟等主要靶标害虫具有较高的抗性水平，对稻飞虱、叶蝉、捕食性天敌等非靶标生物的生长发育和稻田节肢动物群落的稳定性无明显影响。

Asian stem borer is polyphagic and has 2-3generations on different host plants in one year .whatmore ,the interactions between Asian stem borer and its hosts increase its genetic aberrance .

长期以来，二化螟给我国的水稻生产带来了严重的经济损失。二化螟食性杂，寄主范围广，与众多寄主存在复杂的交互作用使得其遗传差异变大。

I've read this book from stem to stem for three times.

这本书我从头到尾读了三遍。

I have read this book from stem to stem for three times.

这本书我从头到尾读了三遍。

I have read the book three times from stem to stem.

这本书我从头到尾读了三遍。

Phytophthora root and stem rot, caused by Phytophthora sojae, is a prevalent and destructive disease in some soybean-growing regions. The causal fungus overwinters with oospores in soil and causes soybean root and stem rot next year.

在某些大豆生产区，由大豆疫霉菌引起的大豆根茎腐烂病是一种普遍流行的、极具破坏性的病害，病原真菌以卵孢子在土壤中越冬，在条件适宜时导致下一年大豆发生根茎腐烂。

He has to relate with three women in the movie, and yet remain implicitly faithful to the unseen Lucinda.

让克劳德布里亚里成功地饰演试验了一个难度很大的角色：和三个女人打交道，但还要底下对观众未曾谋面的卢馨达保持忠诚。

The experiment was conducted to study effects of inulin on the growth performance, indices of immune organs and serum immunoglobulin of laying chicklings as well as the performance of inulin which replaced the antibiotics in diets by adding 0.2%, 0.4% and 0.8% of inulin, respectively.

试验旨在通过在蛋用雏鸡日粮中添加0.2%、0.4%和0.8%的菊粉，研究菊粉对蛋雏鸡生长性能、免疫器官指数和血清免疫球蛋白的影响，以及菊粉替代抗生素对蛋雏鸡的应用效果。