pest pear

与pest pear相关的网络例句 [注：此内容来源于网络，仅供参考]

We know when and how they arise through systemic investigation to "three diseases and two insects", and it is very helpful to guide farmer how to control Gold-Autumn Pear pest.

通过对金秋梨上的&三病二虫&的系统调查，初步得出了它们发生规律，对指导果农防治金秋梨的病虫害提供了可靠的依据。

At present there are 2 species of pest damage to pear trees including Janus gussakovskii and J.piri in Tianshui city.

目前在天水市为害梨树的茎蜂虫种有古氏简脉茎蜂和梨简脉茎蜂2种。

Apple ; Pear ; Pest ; Occurrence rules ; Chemical control

苹果；梨；病虫害；发生规律；化学防治

Though Asian Pear is of different species from Ya Pear, it has exactly the same production areas and disease and pest occurrences with Ya Pear, the import of which from China has been approved by the US. In 2005 China sent a letter to the US applying for Asian Pear export to the US, and later raised the issue in many subsequent bilateral meetings. In May 2007 the US wrote to China notifying its progress in risk analysis on China's Asian Pear exportation, and requesting additional technical documents from China. In July 2007 China provided the additional documents, but has received no response from the US to date.

亚洲梨与已获准出口美国的中国鸭梨虽属不同生物种，但病虫害发生、管理控制措施完全相同。2005年，中国致函美国提出申请出口亚洲梨的要求，并在以后的多次双边会谈中提到该问题。2007年5月，美国来函通报对中国亚洲梨风险分析进展情况，并要求中国进一步提供补充技术材料。2007年7月中国及时提供了补充材料，但至今未得到美国反馈。