Abstract：In order to explore the feasibility of replacing ordinary mulch with biodegradable one in cotton fields of North China Plain and solve the white pollution problem, four experimental treatments, i.e. 6 μm ordinary mulch(PE), 8 μm biodegradable film 1(M1),6 μm biodegradable film 2(M2), and bared land(control-CK)were set up. Effects of the various treatments on the emergence rate, leaf area index(LAI), agricultural water consumption rate, yield and water use efficiency(WUE)of cotton were analyzed and compared. The results showed that compared with CK, mulching treatments significantly improved the seed emergence rate, but the difference between three films in PE, M1 and M2 was not statistically significant. LAI of two biodegradable films M1 and M2 was significantly lower than PE in the early stage, and PE was the best in seed cotton yield and pre-frost flower rate. There was no significant difference in seed cotton yield and pre-frost flower rate among the three treatments. Likewise, there was no significant difference in WUE among the three mulching treatments, but their WUE was significantly higher than that of CK. Compared with PE, there was no statistically significant difference in seed emergence rate, pre-frost flower rate, seed cotton yield and WUE between the two biodegradable film treatments. Compared with PE, the 6 μm biodegradable film did not increase the cotton water consumption, but the 8 μm biodegradable film did significantly increase the consumption. It is better to replace PE with the 6μm biodegradable mulch.
赵嘉涛,马玉诏,范艳丽,刘俊梅,李全起*. 生物可降解地膜对棉花产量及水分利用效率的影响[J]. 排灌机械工程学报, 2021, (1): 96-101.
ZHAO Jiatao,MA Yuzhao,FAN Yanli,LIU Junmei,LI Quanqi*. Effects of biodegradable mulch on cotton yield and water use efficiency. Journal of Drainage and Irrigation Machinery Engin, 2021, (1): 96-101.
