控溫型液態(tài)地膜構(gòu)建及其對(duì)玉米種植的影響

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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，即地面覆蓋薄膜，具有保溫、保、抑鹽[1]、抑制雜草[2]、提高光合作用效率[3]等諸多功能，能有效緩解部分地區(qū)溫度、濕度等外部條件對(duì)當(dāng)?shù)剞r(nóng)作物造成的生長(zhǎng)脅迫，這也使得地膜覆蓋栽培技術(shù)得到了廣泛的研究和應(yīng)用[4]。（剩余12267字）