| Abstract: In order to improve the controllable degradation performance and cost performance of largescale application of full-biodegradable films, through technical verification and product selection, 9 kinds of fullbiodegradable films and 2 kinds of ordinary PE films were used as materials to carry out film mulching experiments
of spring cabbage, and the effects of different plastic films on the growth period, agronomic characters, yield of cabbage and degradation of films were analyzed. The results showed that the effect of different biodegradble film mulching was basically the same as that of common plastic film, and had no adverse effect on the growth and yield of
cabbage, which could meet the needs of cabbage mulching cultivation. Compared with no mulching film, the growth period of cabbage with mulching films could be advanced by 3-6 days, among which the heading and compaction period could be advanced by 6 days, and the yield could be significantly increased by 38.92%-52.72%. The fullbiodegradable film 'Shanghai black 8' (black color and thickness of 8 μm) was more prominent with a suitable degradation period, and the effect of increasing yield (increasing yield rate of 47.47%) was also significant. |