抗病育种占选种圃的发病条件是兼抗育种的又一关键。

Disease condition in selective nursery is another key to multi resistant breeding.

youdao

对蓝藻“红圈病”的病症、发病条件、传播程度方式、危害进行了研究。

The symptom, conditions of pathogen development, modes of infection, and damage extent of the red-ring disease to blue-green algae are studied.

youdao

在此基础上，研究病害发病条件及玉米的抗性，探讨玉米疯顶病的综合治理方法。

Also the conditions of disease development, maize resistance and disease control measureses were studied.

youdao