不同土壤消毒剂对连作花生的病害及产量的影响

Effects of Soil Disinfectants on Diseases and Yield of Continuously-Cropped Peanut

在大田条件下,通过施用生石灰、多菌灵、五氯硝基苯、敌克松4种消毒剂,对连作花生土壤进行消毒处理,以空白为对照,研究了土壤消毒剂对花生的成苗率、生长期内叶部病害发生及产量的影响,结果表明:施用土壤消毒剂可以提高连作花生的成苗率,降低花生生长期内叶斑病和锈病的发病率,可建立较为理想的经济产量结构,增产达到极显著水平,其中以五氯硝基苯的增产幅度最大,生石灰次之。

In field conditions, quicklime, Carbendazim, Pentachloronitrobenzene （PCNB） and Fenaminosuff were used to soil disinfection treatment of continuously - cropped peanut field. As compared with the blank control, their effects on the seedling rate, leaf disease in growth period and yield of continuously - cropped peanut were studied. The results showed that the use of these soil disinfectants could improve seedling rate, reduce the incidence of leaf spot and rust disease in peanut growth period, establish ideal economic output structure, and very significantly enhance the peanut yield. The yield - increasing rate of applying PCNB was the highest among them, followed by applying Carbendazim.