一、发生与为害水稻黄蜘蛛近年来在邕宁县南阳公社逐年扩大为害,1974年全社发生面积仅300多亩,1975年达2000多亩。其中以刘风大队受害最重,1975年发生面积达240亩,成为水稻病虫主要的防治对象之一。水稻黄蜘蛛主要为害叶片,一张叶片上的虫数可多达2000余个。以若虫、成虫在稻叶上刺吸植株汁液。稻叶受害部位产生白色斑点,斑点多时连合成条斑。若虫脱皮后的壳残留在稻叶上,象蒙上一层灰白色粉 First, the occurrence and damage Yellow spider rice in recent years in Suining County, Nanyang commune to expand the damage in 1974, the whole area of ​​?? only 300 acres, an area of ​​2000 mu. One of the most affected by the wind brigade Liu, occurred in 1975, an area of ​​240 acres, become the main pest control one of the objects. Yellow spider rice is the main damage leaves, a leaf on the number of insects can be as many as 2,000. To nymphs, adults in the rice leaf sucking plant juice. White spots on the affected parts of rice leaves, spot long time combined into a streak. Nymph peeled shell remains in the rice leaves, like a layer of gray powder