论文部分内容阅读
90年代气候特点是暖冬凉夏,加上本州地形复杂,区域性小气候较为显著,稻瘟病发生面积大、程度重。品种抗性丧失,是稻瘟病发生的主导因子,适宜的气候条件是猪瘟病流行的主要因素。通过研究分析、得出了适宜稻瘟病发生的气候指标;对镇远县1987~1997年稳猪瘟病发生程度进行了统计分析,建立了穗稻瘟病发生程度预测方程。根据90年代我州猪瘟病发生情况和气候特征,对我州稻作区进行了初步区划。在这一项目的分析研究过程中,采取了“以加强病害测报为先导,选用耐抗品种为中心,实施健身控害栽培为基础,保穗防治为重点”的治理策略,取得了显著的经济、社会、生态效益。
In the 1990s, the climate was characterized by warm winter and cool summer, coupled with the complex topography of the state, the more pronounced regional microclimates, and the occurrence of rice blast areas. The loss of resistance of varieties is the dominant factor for the occurrence of blast, and the suitable climatic conditions are the main factors of the epidemic of blast. Through the research and analysis, the climatic index for the occurrence of rice blast was obtained. The incidence of stable blast in 1987 ~ 1997 in Zhenyuan County was statistically analyzed, and the prediction equation of the occurrence degree of the panicle blast was established. According to the occurrence and climatic characteristics of the classical swine fever in our country in the 1990s, a preliminary division of paddy rice area in our province was carried out. In the process of analysis and research of this project, we have adopted a management strategy of “taking disease detection as the guide, selection of resistant varieties as the center, implementation of fitness control cultivation as the focus and spike prevention as the key point”, and achieved significant economic Social and ecological benefits.