Yield-increasing Mechanism of Biodegradable Mulch Cover Potato

doi:10.11924/j.issn.1000-6850.casb17090117

Abstract

Abstract: To study the yield- increasing mechanism of winter potato with biodegradable mulch film in Guangdong, four treatments including biodegradable film, biodegradable herbicidal film, plastic film and bare land are set. The effects of different treatments on soil temperature, nutrients, potato yield and quality are studied by field experiments. The results show that soil temperature of different mulch films has no significant difference and has significant difference compared with that of bare land treatment, the 10 cm soil temperature of biodegradable herbicidal mulch film, biodegradable mulch film and plastic film increase by 2.17, 2.57 and 2.29℃ compared with that of bare land. The soil nutrients content of biodegradable herbicidal mulch film and biodegradable mulch film are the lowest, and that of bare land is the highest. The tuber yield of biodegradable herbicidal mulch film and biodegradable mulch film increase by 2335.5 and 2056.5 kg/hm2 compared with that of plastic film, increase by 5947.5 and 5668.5 kg/hm2 compared with that of bare land. Biodegradable mulch film could not only solve the white pollution problem, but also improve the marketable tuber yield of potato, it is very important to promote the potato industry in Guangdong.

CLC Number:

S562.07

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