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1·A30 culture showed good control efficiency to rice sheath blight in the field.

在小区试验中a30菌液对水稻纹枯病也表现出了较好的防治效果。

2·The incidence of rice sheath blight was about 5% and the disease grade is relative less;

纹枯病发生较轻，田间病株率为5％左右，且危害级别较低；

3·The control effect of Wengmeiqing (validamycin) and its mixture on rice sheath blight disease was tested in field.

研究了纹霉清及其复配剂防治水稻纹枯病的防治效果。

4·We compared the induction effects of them against the rice sheath blight. The result shows that BTH and COS have the stronge inducing effects against the pathogen.

经过比较这四种诱导因子的诱导抗病性效果，确定了BTH和壳寡糖具有较好的诱导抗病效果，可作为水稻抗纹枯病的诱导因子。

5·Genetic studies on rice resistance to sheath blight were slow in that ideal resistant resources and effective method to identify resistance to rice sheath blight were short.

由于缺乏理想的抗源、有效的鉴定方法，致使水稻纹枯病抗性遗传研究相对滞后。

6·A field experiment was conducted to investigate the development rule of rice sheath blight in rice-duck-fish complex ecosystem. A model was established based on experiment data.

通过田间试验，对稻-鸭-鱼共栖生态系统中水稻纹枯病的发生规律进行了研究并建立了相应的数学模型。

7·Based on investigation materials of the occurrence degree of rice sheath blight, long period prediction models were built by means of correlative analysis with several predisposition factors.

根据水稻纹枯病发生与危害程度的调查资料，经与各诱病因素的相关性分析，组建成早、晚稻纹枯病的长期预测模型。

8·The harm degree of the rice blast and the rice sheath blight was detected according to the distance characteristic, at present there had not defined the only method of digital image distance.

由于水稻稻瘟病及水稻纹枯病的病害程度是根据距离特征来检测，目前还没有定义数字图像距离的唯一方法。

9·The biological activity assay of the crude toxin showed that it could induce the characteristic symptom of rice sheath blight and inhibit the growth of rice radicle and make the seedling wilting.

对粗毒素进行生物活性检测，发现粗毒素在水稻叶片上能形成水稻纹枯病的典型症状，并可抑制水稻种子胚根的生长，致使水稻幼苗失绿萎蔫。

10·These results suggested that in vitro screened rice somatic mutants resistant to sheath blight had the similar resistant mechanism as general resistant varieties.

由此说明离体筛选的水稻抗纹枯病突变体的抗病机制与一般抗性品种类似。