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1963—1980年我们先后应用放射性核素标记农药示踪技术,对部分有机磷、有机氯、有机氮和有机砷等十几种农药,在水稻、棉花、茶叶、水果、蔬菜上的残留动态等作了研究。研究结果如下:1.施药后作物体上的原始沉积量(附着量)与作物形态有密切关系:作物单位重量的表面面积大,农药沉积量也大,表面粗糙的比表面光滑的沉积量大。沉积量还与作物生育期、农药剂型有关。2.试验表明:上述各种农药均可为水稻根系所吸收,并运转到植株的其它部分。但各种农药吸收、运转的速率和数量不同。农药可从叶片进入植株,但其量低于根部吸收。农药在稻株各部位分布量有明显
From 1963 to 1980, we successively applied radionuclide labeled pesticide tracing technology to study the residual dynamics of some pesticides such as organic phosphorus, organic chlorine, organic nitrogen and organic arsenic in rice, cotton, tea, fruits and vegetables Made a research. The main results are as follows: 1. The initial deposition of the crop after application (the amount of deposition) is closely related to the crop morphology: the surface area per unit weight of the crop is large, the amount of pesticide deposition is also large, Big. The amount of sediment and crop growth period, pesticide formulations related. 2. The experiment shows that all kinds of pesticides mentioned above can be absorbed by rice roots and run to other parts of the plant. However, all kinds of pesticides absorb and operate at different rates and quantities. Pesticides can enter the plant from the leaves, but their amount is lower than that of the roots. Pesticide distribution in various parts of rice plants is obvious