Effects of Different Plastic-Film Mulching Modes on Environment and Growth Characteristics of Potato in Protected Cultivation
Ma Haiyan
Chen Guangxia
Liu Fang
Yang Xiaohui
Yang Yuanjun
Dong Daofeng
Abstract：In this study,the characteristics of temperature and humidity,and the growth regularity of potato in protected cultivation were researched under four plastic-film mulching modes,which were four films,three films,two films and one film.The results showed that two-film mulching could resist low temperature of-2.8 ℃,three-film mulching could resist low temperature of-6.8 ℃,and four-film mulching could resist low temperature of-9.8℃.Under the condition of external minimum temperature as-11.3℃,the 10-cm deep soil temperature of one-film,two-film,three-film and four-film mulching was 1.11 ℃,4.61℃,6.61℃ and 7.11℃ respectively.Therefore,the potato could be early sowing,early harvesting and enter the market in advance by muhilayer plastic-film mulching which could increase the air temperature and soil temperature during the potato growth phase in Shandong Province.However,under four-film and three-film mulching,the air temperature and soil temperature were lower,and the tuber formation was earlier due to the excessively early sowing.Meanwhile,the light was low under multilayer film mulching,so the potato got weak growth vigor,small tubers and low yield.Under one-film mulching,the aboveground part grew vigorously,but the underground tuber expansion was suppressed because of high temperature during the late growth period.Under the two-film mulching,the early high temperature was conducive to the rapid growth of plant,the tuber expanded quickly after formation and achieved dry matter accumulation before the advent of high temperature,so the highest yield could be obtained.
Keywords：Plastic-film mulching modePotatoProtected cultivationTemperature and humidityGrowth regularity
Publication Date：2017-09-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：6( 65-70 )