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1986年,全省稻瘟病发生面积已从前两年700万亩和900万亩的流行高峰降到300万亩左右的常年水平,为害程度大大下降。为了更好地掌握防治稻瘟病的关键技术,提高综合防治的科学技术水平,现就我省稻瘟病防治工作提出以下意见。一、品种的抗感变化与病害预测通过田间病圃鉴定和室内生理小种测定结果表明,我省从1971～1986的16年间,出现了六次大面积的品种更替,平均
In 1986, the province’s blast area has dropped from the peak level of 7 million mu and 9 million mu in the previous two years to a perennial level of about 3 million mu, greatly reducing the degree of harm. In order to better grasp the key technologies for the prevention and control of rice blast and improve the scientific and technological level of comprehensive prevention and control, we hereby put forward the following opinions on prevention and control of rice blast in our province. First, the varieties of resistance to changes in disease resistance and disease prediction by field nursery identification and indoor race determination results show that the province from 1971 to 1986, 16 years, there have been six large-scale varieties of change, the average