丰都县烟草黑胫病的发生规律与综合防治技术研究

为有效地预防烟草黑胫病在丰都县的流行与发生,2013年对烟草黑胫病在不同海拔高度的发生情况进行了调查。结果表明,烟草黑胫病始见期在6月中旬,病害发生高峰期在7月上旬,7月下旬地上部进入死亡高峰;不同海拔烤烟种植区烟草黑胫病的发病情况差异较大,低海拔地区黑胫病发生较普遍,而海拔较高地区发病较少。在烟草黑胫病的防治中,应采用以农业防治为基础,在关键时期及时进行化学防治。

Study on Occurrence Law and Control of Phytophthora parsitica in Fengdu County

In order to efficiently prevent occurrence and epidemic of Phytophthora parsitica in Fengdu,the disease occurrence in the field with different altitudes in 2013 was investigated. The results showed that the Phytophthora parsitica began in the middle ten-day period of June and the peak occurrence time was in the first ten-day period of July,and the death peak in the last ten-day period of July. Morbidity of the disease differed with altitudes,Phytophthora parsitica was universal in low altitude region,while less in high altitude region. The control measures should include applying chemical agents in the key control period on the basic of agricultural comprehensive control.