中文摘要：

为探明地膜/网纱覆盖在菠萝冬季防寒中的作用,以露地（NF）栽培为对照,设置地膜＋网（FM＋GC）、地膜（FM）及露地＋网（NF＋GC）3种处理,研究了地膜/网纱覆盖对冬季菠萝园小环境温湿度、光照强度、土壤温度的调控效应,及其对冬季菠萝植株、果实生长,果实品质形成等的影响。结果显示,（1）与露地对照相比,地膜＋网、地膜及露地＋网处理均提高了小环境的空气温度;地膜＋网、露地＋网均提高了空气湿度,而地膜处理在10：00前可提高空气湿度,11：30后会降低;地膜＋网、露地＋网处理均降低了光照强度,但地膜处理则可略微提高光照强度;地膜＋网、地膜及露地＋网处理均提高了土壤温度。（2）地膜＋网、地膜及露地＋网处理的植株新抽叶片数增多,新抽叶片长度增加,果实单果重及纵、横径提高,但可溶性固形物、可滴定酸含量及固/酸比变化不明显。（3）地膜＋网、地膜处理的菠萝果实果皮的L＊、a＊、b＊值提高,而露地＋网处理的则降低;地膜＋网处理的菠萝果肉L＊、a＊、b＊值提高,而地膜处理的果肉L＊值提高,a＊、b＊值却降低;露地＋网处理的菠萝果肉L＊、a＊、b＊值均降低。（4）地膜＋网处理的果实酯类香气物质总相对含量降低,烯类总相对含量提高;而地膜、露地＋网处理的则相反。研究表明,地膜/网纱覆盖促进了冬季菠萝植株及果实的生长,对果实品质无显著影响,但网纱覆盖对菠萝果实色泽、香气物质有一定的影响。

英文摘要：

The aim of this work was to investigate the efficiency of film/gauze covering on anti-chilling for pineapple in winter.The micro-environmental air temperature and humidity,light intensity,as well as soil temperature of the three treatments,namely film mulching and gauze covering（FM＋GC）,film mulching（FM）and no film-mulching but gauze covering（NF＋GC）,were compared with control（no film-mulching,NF）.Also,the growth tendency of pineapple plants and fruits,as well as quality,color aspects and aroma components of pineapple fruits were monitored and compared.The results indicated：（1）FM＋GC,FM and NF＋GC increased the micro-environmental air temperature when compared with control.FM＋GC andNF＋GC increased the air humidity around one day.By FM,the air humidity was increased before 10：00and then slightly decreased after 11：30.FM＋GC and NF＋GC decreased the light intensity,while NF slightly increased.FM＋GC,FM and NF＋GC increased the temperature of soil.（2）FM＋GC,FM and NF＋GC promoted the initiation of newly growing leaves and increased their length.FM＋GC,FM and NF＋GC increased the longitudinal and transverse diameters as well individual weight of pineapple fruits.No significant differences were observed when compared the TSS,TA（Titratable acidity）and TSS/TA ratio of the three treatments with control.（3）FM＋GC and FM increased the values of L＊,a＊and b＊of pineapple skin,whereas,NF＋GC decreased.FM＋GC increased the values of L＊,a＊and b＊of pineapple pulp and NF＋GC decreased,while,FM increased L＊and decreased a＊and b＊.（4）FM＋GC decreased the total content of ester aroma components and increased that of alkene components,while,the change tendency was inverted by FM and NF＋GC.This present work suggested that Film/GC covering effectively prevented the pineapple from chilling and promoted the growth of pineapple plants and fruits in winter.Film/GC covering slightly affected the quality properties of pineapple fruits.GC covering negatively affe