论文部分内容阅读
5月19日,根据菌源基数、品种抗性、气象条件等因素综合分析,陕西省植保总站预计今年陕南春播马铃薯晚疫病中等发生,山区局部偏重发生,发生面积80万亩,发病盛期5月下旬至6月中旬。预测依据:1.病害始见期偏晚,目前发病重于去年同期。今年晚疫病始见期偏晚,田间病株始见期汉中市4月10日,较去年晚5天,安康市4月22日,与较去年早1天。据陕南3市近期调查,汉中、安康两市发生面积20.04万亩,较去年的25.2万亩减少5.2万亩,商洛市未见病。汉中市主要发生在
On May 19, according to the comprehensive analysis of fungal base, variety resistance, meteorological conditions and other factors, Shaanxi Provincial Plant Protection Headquarters estimated that the late blight of spring sowing potato in southern Shaanxi will occur moderately in this year and the partial mountainous area occurs with an area of 800,000 mu From late May to mid-June. Prediction is based on: 1. The onset of disease is late, the current incidence heavier than the same period last year. This year late onset of late blight late, the onset of field disease Hanzhong April 10, 5 days late last year, Ankang City April 22, and 1 day earlier than last year. According to a recent survey conducted by 3 cities in southern Shaanxi, an area of 200,400 mu occurred in Hanzhong and Ankang cities, a decrease of 52,000 mu from 252,000 mu last year. No disease was found in Shangluo City. Hanzhong City occurs mainly in