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危害吴忠市的玉米红蜘蛛为二斑叶螨ＴｅｔｒａｎｙｃｈｕｓｕｒｔｉｃａｅＫｏｃｈ，是国内的广布种。自８０年代以来，我区平罗等地首先发现该叶螨严重危害玉米，以后逐年在灌区各县市普遍发生。１９９７年全区严重发生，个别地区暴发成灾。现将吴忠市１９９７年发生情...
Hazard Wuzhong City corn spider mites TetranychusurticaeKoch TetranychusurticaeKoch, is a widely distributed species. Since the 1980s, Pingluo District of our district first discovered that the spider mite seriously endangered the corn and later occurred annually in all counties and cities in the irrigated area. Seriously occurred in 1997 in the whole region and the outbreaks of individual areas were disastrous. Wu Zhong city now happened in 1997 ...