摘要:
本研究统计了2004—2021年重庆市秀山县稻飞虱灯诱监测和预测圃田间调查历史数据,分析了本地稻飞虱的发生期、发生量及发生程度.结果发现,秀山县稻飞虱发生和为害表现出新的特点:一是白背飞虱与褐飞虱为害期不一致,高峰期均比较明显;二是稻飞虱发生程度总体呈现偏轻的趋势;三是稻飞虱主害期呈现提早化趋势;四是全县不同生态区域稻飞虱发生与为害差异明显,平丘稻区重于低山稻区,低山稻区重于高山稻区.进一步阐述了秀山县稻飞虱发生与变化的根本原因,包括秀山县的特殊地理位置、气候条件、水稻栽培管理与稻飞虱防治技术水平,最后提出稻飞虱按照世代分别预报、区域合作监测、“压白控褐”的监测的防控策略,为稻飞虱的精准防控提供参考依据.
Abstract:
In this paper, the historical data of field survey of rice planthopper in Xiushan County, Chongqing from 2004 to 2021 were collected, and the occurrence period, amount and degree of local rice planthopper were analyzed. The results showed that the damage of rice planthopper in Xiushan County showed new characteristics. Firstly, the harm period of white-backed planthopper and brown planthopper was not consistent, and the peak periods of both were obvious. Secondly, the occurrence degree of rice planthopper showed a slight trend. Thirdly, the main damage period of rice planthopper showed an earlier trend. Fourthly, the occurrence and damage of rice planthopper in different ecological regions of the county were obviously different. The occurrence and damage in plain hilly area was heavier than that in low mountain area, and the damage in low mountain area was heavier than that in high mountain area. This study further explained the basic reason of occurrence and change of rice planthopper in Xiushan County, including special geographical location, climatic conditions, techniques for rice cultivation management and prevention and control of rice planthopper. Finally, the prevention and control strategies of rice planthopper were put forward according to generation prediction, regional cooperation monitoring and ‘white pressure and brown control’ monitoring to provide a basis and reference for the precise prevention and control of rice planthopper.
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