Abstract
Abstract The water-saving and yield-increasing effect of PAM was studied through a plot experiment. Results showed that soil water content increased with the increase of the application concentration of PAM. During the whole growth period of maize, soil water content increased by 5.62%∼10.96% in comparison with control. After the application of PAM, as for all the treatments the average plant heights of maize were higher than control; ear height, ear length and ear diameter had little change; a great effect on the bald length of maize. Meanwhile, PAM did not have an adverse effect on photosynthesis of maize leaves, transpiration, leaf temperature and crop water use efficiency. This study also showed that with the application concentration of 0.5∼2.0 g/m2 of PAM the maize yield increased by the percentages of 5.54%∼14.13%.
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