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试验结果表明,冬小麦和夏玉米对锰、锌的吸收规律相似,但是冬小麦对锰的吸收量显著高于对锌的吸收量,约为锌吸收量的2倍,因此易发生缺锰;夏玉米对锰和锌的吸收量相近,但是苗期到拔节期锌吸收率显著高于干物质积累率,易发生缺锌。锰锌配合施用对锌肥的有效性影响不大,但却可明显提高锰肥的有效性,因此是有利于冬小麦和夏玉米锰锌营养、简便易行、效果显著的增产措施。
The results showed that the absorption of manganese and zinc in winter wheat and summer maize were similar, but the absorption of manganese in winter wheat was significantly higher than that of zinc, which was about twice as much as that of zinc. The absorption of manganese and zinc were similar, but the zinc absorption rate at seedling stage to jointing stage was significantly higher than that of dry matter accumulation, and zinc deficiency was easily occurred. The combination of Mn and Zn has little effect on the availability of zinc fertilizer, but it can obviously improve the availability of Mn fertilizer. Therefore, it is an effective measure to increase Mn and Zn nutrition of winter wheat and summer maize.