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本试验选用英红玉米研究不同施用量的PAM对土壤容重、土壤总孔隙度的影响,PAM与土壤含水量的关系,PAM与玉米经济性状及产量的关系。试验结果表明:从本试验初步结果可以看出,从土壤改良的角度出发,该地区使用PAM的适宜施用量为0.40~0.60g/m2。当PAM施用量为0.40~0.60g/m2时玉米产量增产幅度最大。当施用量增加到一定程度玉米产量增长缓慢,这说明PAM在使用过程中应该注意施用量的把握。
In this experiment, the effects of PAM on soil bulk density, total porosity, PAM and soil water content were investigated using different concentrations of PAM. The relationship between PAM and maize economic traits and yield was studied. The experimental results show that, from the preliminary results of this experiment, it can be seen from the point of view of soil improvement that the suitable application rate of PAM in this area is 0.40 ~ 0.60g / m2. When the application rate of PAM was 0.40 ~ 0.60g / m2, the yield of corn was the largest. When the application rate increased to a certain extent, the yield of maize increased slowly, indicating that PAM should pay attention to the application rate during the application.