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。
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。
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。
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。
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。
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。
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;
The research was conducted to reveal the regular of resistance to sheath blight and chitinase activities of 13 transgenic rice lines which modified by chitinase gene and other anti-fungal genes.
采用人工接种和酶活性测定的方法,研究转入几丁质酶基因等1~4个抗真菌基因的13个转基因水稻株系对纹枯病的抗性和几丁质酶活性变化规律。
For 3 years, the method is applied as a demonstration by 6000 peasants in 100 villages of 13 towns, and achieves the preventative effect on the sheath blight of the wheat and the rice.
此方法三年来经我区13个乡镇100个村庄6000户农民示范施用,均达到了对小麦、水稻纹枯病的预防效果。
For 3 years, the method is applied as a demonstration by 6000 peasants in 100 villages of 13 towns, and achieves the preventative effect on the sheath blight of the wheat and the rice.
此方法三年来经我区13个乡镇100个村庄6000户农民示范施用,均达到了对小麦、水稻纹枯病的预防效果。
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