建立了病害流行时间动态函数。
At the same time, temporal dynamic function of apple scab was developed.
夏季高温高湿是导致病害流行的主要因素之一，垂直刈剪和合理施用氮肥可降低该病的危害。
High relative humidity is one of main factors causing disease epidemic. Vertical mowing and rational application of nitrogen fertilizer can reduce the disease damage.
本文简要地介绍了世界主要植蔗国通过甘蔗抗病育种，成功地控制了蔗区重要病害流行的情况。
It covers in this essay a brief introduction about how to have successfully controlled the epidemics of major sugarcane disease through breeding in the major sugarcane planting countries.
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