控温型液态地膜构建及其对玉米种植的影响

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Abstract： Suitable temperature and humidityare necessry conditions for the healthy growth of crops，and plastic film mulchingcan effectively alleviate the adverse efectsof drought or low temperatureenvironment oncrop growth and developmentduring planting.Asanewtypeofbiodegradable mulch，liquid mulchhas thecharacteristics ofconvenientuse， no terrain limitationandenvironmentalfriendliness.However，therearestillsome problemsintheapplicationproce，such as poorheatpreservationand moisture retention.Inthis paper，acompositephasechange material withbiocharas thecarrier was introducedonthebasisof the liquid mulch film formula to construct a temperature-controled liquid mulch film with good heat preservationand moisture preservation effect. Compared with ordinary liquid mulch film，theheat preservation and moisture retention effect of temperature-controlled liquid mulch film on soil increased by 0.7∘C and 15.45% respectively.After spraying the temperature-controled liquid film，the germination rate of maize seeds reached 94.17% ，and it promotedseedling growthandchlorophyllaccumulation inleaves.Inthis paper，atemperature-controlld liquid film with good heat preservationand moisture preservationefect wasconstructed，whichprovidedanewsolution toimprovetheheat preservation and moisture preservation performanceof ordinary liquid film and promoting the research and development of liquid film.

Keywords：Temperature-controled liquid mulch film;Corn;Phasechange material; Biochar;Insulationand moisture retention

地膜，即地面覆盖薄膜，具有保温、保、抑盐[1]、抑制杂草[2]、提高光合作用效率[3]等诸多功能，能有效缓解部分地区温度、湿度等外部条件对当地农作物造成的生长胁迫，这也使得地膜覆盖栽培技术得到了广泛的研究和应用[4]。（剩余12267字）