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本文采用幼苗生物试验，探讨了四川６种主要作物对三类紫色土锌固定作用的影响。结果表明，淹水条件降低了土壤锌有效性，提高了土壤对锌的固定作用；种植大麦、油菜和蚕豆能促进土壤锌的活化，降低土壤对肥料锌的固定，而种植水稻、玉米和小麦则增加了土壤对锌的固定，这种影响受土壤性质和条件及施锌与否的制约。不同土壤、作物条件下，三种紫色土固锌能力大小均为：钙质土＞中性土＞酸性土；对作物吸锌能力与其对土壤固锌量的关系作了初步分析。
In this paper, seedling biological experiments were conducted to investigate the effects of six main crops in Sichuan on the zinc fixation of three types of purple soil. The results showed that the flooding conditions reduced the availability of zinc in the soil and increased the fixation effect of zinc on the soil. Planting of barley, rape and broad bean could promote the activation of zinc in the soil and reduce the fixation of zinc in the soil. However, planting paddy, corn and wheat The soil will increase the fixation of zinc, which is affected by the nature and conditions of the soil and the constraints imposed by zinc. Under different soil and crop conditions, the capacity of solid zinc of the three purple soils are as follows: calcareous soil> neutral soil> acidic soil; and preliminary analysis is made on the relationship between zinc absorption ability and the amount of solid zinc in soil.