查询词典 scab of wheat

By statistically analyzing meteorological factors affecting wheat scab outbreak, the pathogenic-day of scab was determined. The daily inducing correction index of scab in outbreak time and the duration inducing correction index of scab pathogenic-day were calculated.

方法对小麦赤霉病发生具有影响的气象因子进行统计分析，确定赤霉病致病日，计算赤霉病感病期间逐日诱发修正系数、赤霉病致病日的持续时间诱发修正系数，建立促病指数模型，判别小麦赤霉病气象条件适宜程度及发生的等级。

The two models can be taken as a decision tool for fungicide control of wheat scab.

模型可做为小麦赤霉病药剂防治的决策工具。

Two kinds of mathematical models for fungicide control index of wheat scab were built up in this paper.

经过推导，得出小麦赤霉病的两类药剂防治指标模型。

The findings may provide basis on the short and medium potential trend forecast for the occurrence of wheat scab.

研究结果可为小麦赤霉病发生的中短期潜势预报提供依据。

Scab resistance of wheat is controlled by quantitative genes.

小麦抗赤霉病性状由数量基因控制，遗传机制复杂。

In accordance with field investigation to epidemic dynamics of wheat scab,the forecast method for differential equations of epidemic state has been given respectively.

对小麦赤霉病流行资料进行分析，给出了流行状态微分方程的预测方法。

In the future the probability of wheat scab occurrence will get bigger if the infection sources accumulate to certain amount.

这些地区只要菌源达到一定数量，未来小麦赤霉病发生的概率将会越来越大。

The study was to provide a base for the accurate forecast of epidemic degree and scientific and reasonable prevention of wheat scab.

准确开展小麦赤霉病流行程度预报，科学合理地防治小麦赤霉病。

Based on the Malthus and Weibull differential equations of epidemic state,the cybernetic models of epidemic dynamics of wheat scab were developed according to the extreme value principle,and the optimum control trajectories were given.

根据不同的状态微分方程，以极大值原理建立小麦赤霉病流行动态的控制论模型，得到流行动态的最优控制轨线。

The results showed that the temperature had the tendency of increasing in these regions; the rainfall, raining days and relative humidity had no significant changes; the index of K was over 0 in most areas, that is, the possibility of wheat scab occurrence will be increased year by year.

结果表明，冀京津区域气温有增加趋势，有利于小麦赤霉病的发生流行；冀京津区域降雨量、降雨日数、相对湿度等气象因子未表现出明显的变化；大部分地区K指数大于0，即春季小麦赤霉病发生流行的可能性逐年加大。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。