Study on the high-yielding mechanism of film-mulching culture in wheat in dryland field

Effect of mulching on soil environment and yield factors of wheat were studied by using experiments with black liquid film, plastic film, white liquid film and haulm. The results indicated that its effects were significantly different from CK excepting white liquid film. The effect of the plastic film on yield factors was the largest in these films, and the black liquid film and haulm was the second and the third respectively, while the white liquid film was the smallest. Film mulching could increase temperature and soil, moisture increase the efficiency of water and productivity speed up the grouting of wheat during the peak time (May 12~27) and photosynthesis of efficacy leaf.