在高锰果园和低锰果园分别喷施80％的大生M—45、70％的国产代森锰锌,以50％的多菌灵作对照,研究含锰农药对树体锰含量的影响。结果表明:在高锰果园喷施大生M—45和国产代森锰锌对叶片锰含量的影响均不明显,差异在误差范围之内。因此,生产中可以根据实际需要,继续使用。在低锰果园喷施大生M—45和国产代森锰锌,明显提高了叶片锰含量,并且大生M—45达显著水平,因此在低锰果园应提倡使用。 In high mango orchards and low manganese orchards were sprayed 80% of the students M-45, 70% of domestic mancozeb, with 50% of the carbendazim as a control to study the impact of manganese pesticides on the tree manganese content. The results showed that the effects of applying M-45 and domestic mancozeb on the manganese content of leaves in high-manganese orchards were not obvious, and the differences were within the error range. Therefore, the production can be based on actual needs, continue to use. Applying M-45 and domestic mancozeb in low-manganese orchards significantly increased the manganese content of leaves, and significant levels of M-45 were found in low-manganese orchards. Therefore, it should be advocated in low manganese orchards.