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六十年代中后期,在南亚、东南亚、东亚和南太平洋群岛等地,褐稻虱(BPH)Nilaqar-Vata Lugens(Stal)虫口猛增,上升为水稻的主要害虫。它不仅直接为害水稻,而且是水稻草丛矮缩病毒的传播媒介。伴随着褐稻虱的猖獗,水稻草丛矮缩病大流行,加重了对水稻生产的威协。据1977年国际水稻研究所(IRRI)召开有关科学家座谈会保守的估计,上述地区的一些国家,如印度、印尼、菲律宾、日本、南朝鲜以及我国的台湾省等,由于褐稻虱猖獗和水稻草丛矮缩病的流行,造成稻谷损失
In the mid-to-late 1960s, the population of Nilaqar-Vata Lugens (Stal) of BPH in South Asia, Southeast Asia, East Asia and the South Pacific Islands soared to the level of major rice pests. It is not only directly harmful to rice, but also a vector of rice straw dwarf virus. With the rampant brown planthopper, rice straw dwarf disease pandemic, aggravating the threat of rice production. According to a conservative estimate held by the International Institute of Rice (IRRI) in 1977 concerning scientists’ symposiums, some countries in the above regions, such as India, Indonesia, the Philippines, Japan, South Korea and Taiwan Province of our country, have witnessed rampant brown planthopper and rice The prevalence of bushy dwarf disease has caused the loss of rice