论文部分内容阅读
水稻三化螟是淮南稻区的主要害虫,历年都有不同程度的发生和危害.因此,搞好予测予报,提高予报的准确性,是指导大田防治的关键.根据水稻三化螟的发生和消长规律,我们运用本县1963年以来的测报资料,对回归法予测进行了研究.初步结果如下:1、发生期予测防治三化螟的适期是蚁螟盛孵期,与其有关的影响因子很多,通过相关检验,选择了相关性高的因子作为求算予测式的条件.(1)以5月份的温雨系数(雨量/温
Rice stem borer is the main insect pest in Huai’nan rice area, which has various degrees of occurrence and harm over the years.Therefore, it is the key to guide the prevention and control of rice field to improve the accuracy of the report to the newspaper, The occurrence and growth and decline of the law, we use the measured data since 1963 to study the regression method to predict the results are as follows: 1, There are a lot of influencing factors related to it. Through the correlation test, the factors with high correlation are selected as the conditions to calculate the predictive equation. (1) Based on the May rainfall coefficient (rainfall / temperature