红蜘蛛是我场柑桔主要害虫。近年来为了消灭虫害,保证果品产量,及时使用了农药,效果良好,为丰产稳产奠定了基础。但是年年喷药,每年春秋仍有两次高峰,且秋季虫口密度有逐渐上升趋势,药剂费用有所提高。由于剧毒农药污染环境,每次喷药后均暂停收购青草,致奶牛吃不上或少吃青饲料,对奶产量也有一定影响。工人喷药后有的感到头部昏痛。因此我们认为单纯依靠化学药物,不是长远办法,应实行综合防治,以期达到经济高效的目的。生物防治是一个方向,国内外有不少经验,但我场人工饲放天敌还有困难,只在利 Red spider is my field citrus pests. In recent years in order to eliminate pests and ensure fruit production, the timely use of pesticides, the effect is good, laid the foundation for a stable yield. However, annual spraying, there are still two peaks every spring and autumn, insect population density and the gradual upward trend in the fall, pharmaceutical costs have increased. Due to the highly toxic pesticides that pollute the environment, the acquisition of green grass is suspended after each spraying. As a result, dairy cows can not eat or eat less green fodder, which also has some impact on the production of milk. Some workers feel pain in the head after spraying. Therefore, we think it is not a long-term solution to rely solely on chemical drugs. Comprehensive prevention and control should be implemented so as to achieve the goal of economic efficiency. Biological control is one direction, and there are many experiences both at home and abroad. However, there are still difficulties in feeding and controlling natural enemies in our field,