论文部分内容阅读
麦类赤霉病直接威胁到我地区春粮生产和全年三熟高产。就我地区来说,1975～1977年发病情况是以1973年为最重,依次1975、1977、1976、1974年,其中1973、1975二年发病率高达80%以上。发病指数达40以上,损失3～5成。1977年发病中等,比1973、1975年轻,而比1976、1974年重。其中地理位置偏北的缙云县和海拔较高的山区又比偏南的及平原地区发病重。从1973年开始,我们联合各有关单位,作了赤霉病发生发展规律观察,药剂防治试验;品种抗病性鉴定和预测预报的探讨。现总结如下。
Wheat scab poses a direct threat to spring grain production in my area and high yields of three crops throughout the year. In my area, the incidence in 1975-1977 was the heaviest in 1973, followed by 1975, 1977, 1976 and 1974, of which the incidence rate in 1973 and 1975 was more than 80%. The incidence index of 40 or more, the loss of 3 to 5 percent. The incidence was moderate in 1977, lighter than in 1973 and 1975, but heavier than in 1976 and 1974. Among them, Jinyun County, which is geographically northward, and mountainous areas with higher altitude are heavier than those in the south and plains. Since 1973, we have united with other relevant agencies to make observations on the occurrence and development of scab, the prevention and treatment of pesticides, the identification of disease resistance and the prediction of varieties. Now summarized as follows.