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根据三亚市南方水稻黑条矮缩病的历史发生情况、水稻栽培环境及近年的防治技术推广措施表明,三亚市南方水稻黑条矮缩病在水稻土壤速效磷含量高,速效钾含量低,且偏酸的稻田中容易发生;在4～6月和7～9月水稻秧苗期、本田分蘖期和孕穗期前期高温、高湿,后期高温、干旱容易偏重发生;白背飞虱发生高峰期为南方水稻黑条矮缩病发生主要时期。以此对该病在三亚的发生进行类推预测,同时结合当地的发生规律在水稻不同生育期制定出综合防治措施。
According to the historical occurrence of rice black-streaked dwarf disease in southern rice in Sanya City, rice cultivation environment and the recent popularization and prevention measures of rice black-streaked dwarf disease showed that paddy soil had high available phosphorus and low available potassium, Smell the rice fields prone to occur; in April to June and July to September rice seedling stage, Honda tillering and booting early high temperature, high humidity, late high temperature, drought prone to bias; whitebacked planthopper peak occurrence Southern rice black-streaked dwarf disease occurs during the main period. Based on this, the occurrence of the disease in Sanya was estimated by analogy. At the same time, integrated prevention and control measures were developed at different growth stages of rice according to the local occurrence rules.