根区施药是将内吸性药剂在害虫危害前的适当时期施入泥层或浅水层,通过植株根系吸收转运至全株,使害虫在取食植株后中毒而死。国内外大量研究证明,内吸性药剂可以较快地被植物根系吸收,随后沿导管和筛管及胞间连丝传导而获得周身效应,并且被吸收及运转的效率远比叶面喷雾为大。 Root zone drug application is the internal absorption of pesticides at the appropriate time before the harm applied to the mud layer or shallow layer, through the roots of plants absorbed and transported to the whole plant, so that the pests poisoned after eating plants and died. A large number of studies at home and abroad have proved that the systemic drug can be quickly absorbed by the plant roots, followed by the conduction through the catheter and the screen tube and the intercellular connection to obtain the whole body effect, and is absorbed and operated more efficiently than the foliar spray .