全生物降解地膜降解特性及其对水稻旱作产量的影响

doi:10.12190/j.issn.2096-1197.2021.01.11

Abstract

Abstract: 【Objective】 To evaluate the practical effects of different full biodegradable mulching film on non-flooding rice. 【Methods】 Using 6 kinds of full biodegradable mulching film（T1,T2,T3,T4,T5,T6）and 1 common mulching film（CK） as the test materials,through the field landfill experiment and the non-flooding rice mulching cultivation experiment,the degradation characteristics of the full biodegradable mulching film in each treatment was monitored,and the effect of the full biodegradable mulching film on the yield of rice in dry cultivation.【Results】 In the field landfill experiment after 90 days of landfilling,T5 treatment entered the cataclastic period,most of the T1 and T2 treatments entered the cataclastic period,and had no intensity and elasticity;T6 treatment entered the big crack period,the degradation speed was the slowest,and had minor elasticity. After 180 days of landfilling,the T1,T3,T4 and T5 treatments entered the no-film period,and the T2 and T6 treatments were still in the cataclastic period,and the six fully biodegradable mulches had no intensity and elasticity. After 365 days of landfilling,all the 6 kinds of full biodegradable mulching films were degraded. No degradation,no intensity and elasticity change for CK during 365 days landfilling. In the non-flooding rice mulching cultivation experiment,compared with other treatments,100 days after mulching（August 6^th）,the T6 treatment entered the cracking period,and the time to enter the cracking stage was the latest;141 days after mulching（September 17^th）,all 6 kinds of full biodegradable mulching films entered cataclastic period. Compared with CK,the rice yields of T1,T5,and T6 treatments increased significant 18.68%,17.38% and 17.06%,respectively（P<0.05）. The T1 treatment got the highest rice yield（8 806.99 kg/hm²）. 【Conclusion】 Based on the comprehensive evaluation of the degradation of 6 kinds of full biodegradable mulching films and their effects on non-flooding rice yield,it was concluded that for the non-flooding rice system,T1 and T5 degraded faster and increased yield,and also benefit to the ecological environment.

Key words: Full biodegradable mulching film, Degradation characteristics, Non-flooding rice, Yield

CLC Number:

S511.04

LIU Hui, LIU Hongjin, WANG Jinling, WU Yan, LIU Bo, SUN Dehua, GUO Xiaoyu, Chunlan, LIU Junpeng. Degradation characteristics of full biodegradable mulching film and its effect on non-flooding rice yield[J].Journal of Northern Agriculture, 2021, 49(1): 71-76.

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URL: https://journal30.magtechjournal.com/bfnyxb/EN/10.12190/j.issn.2096-1197.2021.01.11

https://journal30.magtechjournal.com/bfnyxb/EN/Y2021/V49/I1/71

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Degradation characteristics of full biodegradable mulching film and its effect on non-flooding rice yield

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