摘""要:本研究為探明果實(shí)套袋在菠蘿蜜栽培過程中對(duì)果實(shí)病蟲害發(fā)生率、農(nóng)藥使用率及品質(zhì)的影響,為菠蘿蜜優(yōu)質(zhì)高效栽培技術(shù)提供支撐。以10個(gè)菠蘿蜜品種珍珠果、香飲所11號(hào)、香飲所18號(hào)、泰國(guó)四季紅、馬來西亞1號(hào)、馬來西亞2號(hào)、馬來西亞3號(hào)、馬來西亞4號(hào)、馬來西亞5號(hào)和馬來西亞6號(hào)為試驗(yàn)材料,計(jì)算套袋和未套袋果實(shí)的病蟲害發(fā)生率及新增蟲孔數(shù),評(píng)價(jià)果實(shí)果皮及果肉色澤等外觀品質(zhì),測(cè)定其果實(shí)可溶性固形物含量,統(tǒng)計(jì)整個(gè)生長(zhǎng)季節(jié)的農(nóng)藥使用次數(shù)及施用量。結(jié)果表明:10個(gè)品種未套袋果實(shí)的軟腐病發(fā)生率為10.48%~25.00%,套袋果實(shí)的軟腐病發(fā)生率僅為0~2.62%,套袋后軟腐病發(fā)生率降低77.55%~100.00%;各品種未套袋果實(shí)的炭疽病發(fā)生率為10.00%~30.24%,套袋果實(shí)的炭疽病發(fā)生率為0~4.56%,套袋后炭疽病發(fā)生率降低69.99%~100.00%;黃翅絹絲野螟在各品種未套袋果實(shí)的發(fā)生率為23.33%~37.50%,套袋果實(shí)的發(fā)生率為4.00%~8.33%,套袋后發(fā)生率降低74.62%~88.35%;各品種套袋果實(shí)的新增蟲孔和出蟲數(shù)均顯著少于未套袋果實(shí);與未套袋果實(shí)相比,套袋果實(shí)果形更加飽滿,果面更加光潔,果皮著色均勻;未套袋果實(shí)果形存在畸形和果皮著色不均勻等缺點(diǎn);套袋對(duì)10個(gè)品種菠蘿蜜可溶性固形物含量無顯著影響;菠蘿蜜果實(shí)套袋后化學(xué)農(nóng)藥使用減少5次、施用量減少85.87%。綜上,果實(shí)套袋可作為菠蘿蜜的一種生態(tài)友好管理方法,在減施化學(xué)農(nóng)藥的同時(shí),可減輕菠蘿蜜病蟲為害,且不降低果實(shí)品質(zhì)。
關(guān)鍵詞:菠蘿蜜;套袋;病蟲害;色澤;可溶性固形物;農(nóng)藥使用率中圖分類號(hào):S667.8"""""""文獻(xiàn)標(biāo)志碼:A
Application"Research"of"Fruit"Bagging"in"the"Cultivation"and"Management"of"Artocarpus"heterophyllus"Lam"(jackfruit)
ZHONG"Yaofeng1,4,"WANG"Zheng1,3*,"ZHANG"Shaohua1,4,"ZHU"Enhang1,2,"ZHA"Xuezong1,4,"WU"Gang4,"LIN"Xianwu1,"JI"Hengqing3,"MENG"Qianqian1,2*
1."School"of"Tropical"Agriculture"and"Forestry,"Hainan"University"/"Key"Laboratory"of"Green"Prevention"and"Control"of"Tropical"Plant"Diseases"and"Pests,"Ministry"of"Education,"Danzhou,"Hainan"571737,"China;"2."Institute"of"Agricultural"Resources"and"Environment,"Chongqing"Academy"of"Agricultural"Sciences,"Chongqing"400042,"China;"3."Department"of"Disinfection"and"Vector"Control,"Chongqing"Center"for"Disease"Control"and"Prevention"/"Chongqing"Municipal"Key"Laboratory"for"High"Pathogenic"Microbes,"Chongqing"400042,"China;"4."Research"Institute"of"Spice"and"Beverage,"Chinese"Academy"of"Tropical"Agricultural"Sciences"/"Hainan"Provincial"Key"Laboratory"of"Genetic"Improvement"and"Quality"Regulation"for"Tropical"Spice"and"Beverage"Crops,"Wanning,"Hainan"571533,"China
Abstract:"The"study"was"aimed"to"investigate"the"effects"of"fruit"bagging"on"disease"and"pest"incidence,"pesticide"usage"rate"and"quality"of"fruits"in"the"cultivation"of"jackfruit"(Artocarpus"heterophyllus)"and"to"provide"support"for"the"high-quality"and"high-efficiency"cultivation"technique"of"jackfruit."With"ten"cultivars"of"jackfruit"used"as"the"experimental"materials,"the"incidence"of"disease"and"pest"and"the"number"of"new"wormholes"were"calculated"for"bagging"and"non-bagging"fruits."At"the"same"time,"the"appearance"quality"such"as"the"color"of"fruit"pericarp"and"pulp"were"evaluated,"and"the"content"of"soluble"solid"was"determined."Moreover,"the"frequency"and"amount"of"pesticide"application"in"the"whole"growing"season"were"counted."The"results"showed"that"the"rhizopus"rot"incidence"of"non-bagging"fruits"was"10.48%?25.00%,"the"rhizopus"rotnbsp;incidence"in"bagging"fruits"was"only"0?2.62%,"and"the"rhizopus"rot"incidence"was"reduced"by"77.55%?100.00%"in"bagging"fruits"of"ten"cultivars."Similarly,"the"anthracnose"incidence"of"all"cultivars"of"non-bagging"and"bagging"fruits"was"10.00%?30.24%"and"0?4.56%"respectively,"and"the"anthracnose"incidence"of"bagging"fruits"decreased"by"69.99%?100.00%."In"addition,"the"incidence"of"jackfruit"borer"in"all"cultivars"ranged"from"23.33%?37.50%"in"non-bagging"fruits"and"4.00%?8.33%"in"bagging"fruits,"with"the"incidence"of"bagging"fruits"decreased"by"74.62%?88.35%,"in"which"the"number"of"new"wormholes"and"insects"in"bagging"fruits"of"each"cultivar"was"significantly"less"than"those"in"non-bagging"fruits."Compared"to"the"non-bagging"fruit,"the"bagging"fruit"was"fuller"in"shape,"the"fruit"surface"was"smoother,"and"the"pericarp"color"was"uniform."The"non-bagging"fruits"had"disadvantages"of"deformed"fruit"shape"and"uneven"pericarp"color."Bagging"had"no"significant"effect"on"the"soluble"solids"content."By"bagging"the"fruit,"the"frequency"of"pesticide"application"was"reduced"by"5"times"and"the"amount"of"pesticide"application"was"reduced"by"85.87%."In"summary,"fruit"bagging"can"be"used"as"an"eco-friendly"management"method"of"jackfruit,"which"can"reduce"the"application"of"chemical"pesticides"while"reducing"the"disease"and"pest"of"jackfruit,"and"maintaining"the"fruit"quality.
Keywords:"Artocarpus"heterophyllus;"bagging;"disease"and"pest;"color;"soluble"solid;"pesticide"usage"rate
DOI:"10.3969/j.issn.1000-2561.2025.01.015
菠蘿蜜(Artocarpus"heterophyllus"Lam.)是一種??铺厣珶釒Ч麡?,也是熱帶木本糧食作物資源,享有“熱帶珍果”之美稱。菠蘿蜜樹利用價(jià)值極高,其葉和果皮可作飼料,果肉可作水果和蔬菜,種子富含淀粉可作主糧,木材可作家具[1-2]。菠蘿蜜在世界熱帶、亞熱帶地區(qū)均有栽培,廣泛分布于亞洲熱帶地區(qū),主產(chǎn)國(guó)為印度、孟加拉國(guó)、馬來西亞、印尼等,在我國(guó)海南、廣東、廣西、福建、臺(tái)灣、云南及四川等地區(qū)均有種植。近年來,海南菠蘿蜜產(chǎn)業(yè)發(fā)展迅速,幾乎全省各地都有種植,目前已發(fā)展成為海南省特色熱帶果樹產(chǎn)業(yè)之一[3-5]。但病蟲害的為害制約著菠蘿蜜產(chǎn)業(yè)發(fā)展,生長(zhǎng)過程中易受花果軟腐?。≧hizopus"stolonifer)、炭疽?。–olletotrichum"gloeosporioides)等真菌病害侵染[6]。同時(shí),還易被黃翅絹絲野螟(Glyphodes"caesalis)、橘小實(shí)蠅(Bactrocera"dorsalis)等害蟲鉆蛀為害,使受害部位變褐腐爛,導(dǎo)致果實(shí)發(fā)育不良、脫落,嚴(yán)重時(shí)造成50%以上的減產(chǎn)[7-9]。目前關(guān)于病蟲害的防控主要通過化學(xué)藥劑,但易造成害蟲抗藥性,引起環(huán)境污染和食品安全等問題,因此亟需開發(fā)新的防治技術(shù)。
套袋可有效避免病蟲為害、減少農(nóng)藥殘留污染,改善果實(shí)的外觀品質(zhì)和內(nèi)在品質(zhì)[10],目前已應(yīng)用于芒果(Mangifera"indica)、石榴(Punica"granatum)、梨(Pyrus"spp.)、桃(Prunus"persica)、葡萄(Vitis"vinifera)和獼猴桃(Actinidia"chinensis)等水果[11-13],這為菠蘿蜜病蟲害綠色防控提供新思路。如葡萄套袋有效保護(hù)葡萄免受葡萄花翅小卷蛾(Lobesia"botrana)、灰霉?。˙otrytis"cinerea)、白粉?。║ncinula"necator)等病蟲害的侵害[14]。蘋果套袋顯著減少按實(shí)蠅(Anastrepha"fraterculus)、梨小食心蟲(Grapholita"molesta)、蘋果蠹蛾(Cydia"pomonella)等害蟲對(duì)蘋果的損害[15]。芒果掛果期,采用果實(shí)套袋技術(shù),能有效控制果蠅(Drosophilia)、芒果白輪盾蚧(Aulacaspis"tubercularis),炭疽?。–."gloeosporioides)、蒂腐?。―iplodia"natalensis)等病蟲害對(duì)芒果的危害[16]。果實(shí)套袋技術(shù)不僅能有效控制病蟲害的為害,另外,套袋一般只在開花期和套果前施用農(nóng)藥,可減少農(nóng)藥使用次數(shù),并避免直接接觸農(nóng)藥,降低果實(shí)農(nóng)藥殘留量,最終生產(chǎn)出高品質(zhì)、無公害的水果[17]。由于套袋時(shí)期在幼果期進(jìn)行,更利于果實(shí)著色,提高果面光潔度,改善果皮外觀,減輕機(jī)械損傷,以改善果實(shí)外觀品質(zhì),同時(shí)穩(wěn)定袋內(nèi)微環(huán)境,影響可溶性固形物、可溶性糖、可滴定酸和維生素C含量等內(nèi)在品質(zhì)指標(biāo)[18-21]。
果實(shí)套袋技術(shù)對(duì)菠蘿蜜品質(zhì)的影響未見報(bào)道。本研究擬通過對(duì)菠蘿蜜果實(shí)進(jìn)行套袋處理,明確套袋對(duì)菠蘿蜜病蟲害發(fā)生、外觀品質(zhì)、可溶性固形物含量和農(nóng)藥使用率的影響,以期為菠蘿蜜病蟲害科學(xué)防控與農(nóng)藥減施提供技術(shù)支持和理論依據(jù),從而為菠蘿蜜的優(yōu)質(zhì)、綠色栽培提供科學(xué)依據(jù)。
1.1""材料
試驗(yàn)于中國(guó)熱帶農(nóng)業(yè)科學(xué)院香料飲料研究所菠蘿蜜示范園內(nèi)進(jìn)行(18°44¢29¢¢N,110°12¢11¢¢E)。供試品種為珍珠果、香飲所11號(hào)、香飲所18號(hào)、泰國(guó)四季紅、馬來西亞1號(hào)、馬來西亞2號(hào)、馬來西亞3號(hào)、馬來西亞4號(hào)、馬來西亞5號(hào)和馬來西亞6號(hào),樹齡8~9"a,供試果袋選用規(guī)格50~80"cm,孔徑60~80目的白色透氣尼龍網(wǎng)袋。
1.2""方法
1.2.1""試驗(yàn)設(shè)計(jì)""果實(shí)授粉完成后,經(jīng)梳果、定果后進(jìn)行套袋試驗(yàn)。選擇樹冠大小、樹勢(shì)長(zhǎng)勢(shì)基本一致的菠蘿蜜樹,每棵選擇20個(gè)健康幼果,果實(shí)大小為(20~30)cm×(10~15)cm,套袋10個(gè),未套袋10個(gè),各品種重復(fù)3次,每重復(fù)1棵樹,各重復(fù)隨機(jī)排列。套袋前使用50%咪鮮胺錳鹽可濕性粉劑2500倍液和2%阿維菌素乳劑1500倍液殺菌、殺蟲混合劑均勻噴施于果實(shí)及周圍葉片、枝條,用水量為15"L/667"m2,制劑用藥量見表1。待藥膜形成后于1~2"d內(nèi)完成套袋,套袋后停止施藥,將其作為試驗(yàn)處理。對(duì)照選取同一品種未套袋果實(shí),農(nóng)藥使用按照常規(guī)管理,交替使用,每隔15~20"d噴1次,果實(shí)成型后每隔1個(gè)月噴1次。
1.2.2""病蟲害調(diào)查""各處理果實(shí)采收后,統(tǒng)計(jì)所有果實(shí)的軟腐病、炭疽病、黃翅絹絲野螟等主要病蟲害發(fā)生情況,根據(jù)套袋前后果實(shí)蟲孔數(shù)和出蟲數(shù)的變化,計(jì)算病蟲害發(fā)生率和新增蟲孔。
病蟲害發(fā)生率=被病蟲危害果實(shí)總數(shù)/總果數(shù)×100%
新增蟲孔數(shù)=摘袋后蟲孔數(shù)-套袋前蟲孔數(shù)
1.2.3""外觀品質(zhì)觀察""利用相機(jī)記錄果實(shí)外觀及果肉著色情況,采用Image-Pro"Plus"6軟件測(cè)定果實(shí)的亮度(L*)、紅綠色差(a*)和黃藍(lán)色差(b*),計(jì)算色澤飽和度(C*)和色調(diào)角(h°),每個(gè)果實(shí)不同位置測(cè)定3次,每品種共測(cè)3個(gè)果實(shí),取均值[22]。
C*=[a*2+b*2]1/2
h°=arctan(b*/a*)
1.2.4""可溶性固形物含量測(cè)定""采用1.2.1方法對(duì)各品種菠蘿蜜進(jìn)行套袋,果實(shí)成熟后對(duì)套袋和未套袋處理分別隨機(jī)選取10個(gè)果實(shí),剝?nèi)⊥惶幚聿煌麑?shí),混合果肉后隨機(jī)挑選5個(gè)擠壓制汁,利用數(shù)顯測(cè)糖儀"Atago(PAL-1)測(cè)定可溶性固形物含量,各處理重復(fù)測(cè)定8次,計(jì)算平均值[13,"23-24]。
1.2.5""農(nóng)藥使用率測(cè)定""設(shè)置套袋和未套袋2個(gè)處理,其中套袋處理:套袋前噴1次殺菌、殺蟲混合劑,套袋后即停止施藥;未套袋處理:從開花期至果實(shí)授粉結(jié)束開始預(yù)防,每隔15~20"d噴1次,果實(shí)成型后每隔1個(gè)月噴1次,用水量為15"L/667"m2。殺菌、殺蟲混合劑配方見表1,交替使用,以18棵樹為1個(gè)試驗(yàn)小區(qū),每個(gè)小區(qū)667"m2,設(shè)置3個(gè)生物學(xué)重復(fù)。記錄各處理農(nóng)藥使用次數(shù)及用藥量。
1.3""數(shù)據(jù)處理
試驗(yàn)數(shù)據(jù)采用SPSS"20.0軟件進(jìn)行統(tǒng)計(jì)分析,數(shù)據(jù)均為平均值±標(biāo)準(zhǔn)誤,百分比數(shù)據(jù)經(jīng)反正弦平方根轉(zhuǎn)化再進(jìn)行統(tǒng)計(jì)分析。2組平均值間比較采用獨(dú)立樣本t檢驗(yàn)法,多組平均值間比較采用One-way"ANOVA法,差異顯著性分析采用Duncan’s新復(fù)極差法。
2.1""套袋與未套袋對(duì)果實(shí)病蟲害的影響
由表2可知,套袋能有效預(yù)防病蟲為害。10個(gè)品種未套袋果實(shí)的軟腐病發(fā)生率為10.48%~"25.00%,套袋果實(shí)的軟腐病發(fā)生率為0~2.62%,套袋后各品種軟腐病發(fā)生率降低77.55%~"100.00%,其中馬來西亞4號(hào)較其他品種套袋后軟腐病發(fā)生率降低最少,但仍達(dá)77.55%;而珍珠果和泰國(guó)四季紅套袋后未發(fā)生軟腐??;套袋效果對(duì)軟腐病的防效最好。各品種未套袋果實(shí)的炭疽病發(fā)生率為10.77%~30.24%,套袋果實(shí)的炭疽病發(fā)
生率為0~4.56%,套袋后炭疽病發(fā)生率降低69.99%~100.00%,與其他品種相比,馬來西亞6號(hào)套袋后炭疽病發(fā)生率降低最少,為69.99%;香飲所18號(hào)和泰國(guó)四季紅套袋后未觀察到炭疽病。另外,黃翅絹絲野螟在各品種未套袋果實(shí)的發(fā)生率為23.33%~37.50%,套袋果實(shí)的發(fā)生率為4.00%~8.33%,套袋后發(fā)生率降低74.62%~"88.35%。套袋果實(shí)的新增蟲孔和出蟲數(shù)均顯著少于未套袋果實(shí),其中馬來西亞1號(hào)在各品種中新增蟲孔最多,為(5.00±0.58)個(gè)/果實(shí),套袋菠蘿蜜新增蟲孔為(0.25±0.25)個(gè)/果實(shí);香飲所18號(hào)在各品種中出蟲數(shù)最多,為(6.60±0.40)頭/果實(shí),套袋后顯著減少至(3.75±1.25)頭/果實(shí)。
2.2""套袋與未套袋對(duì)果實(shí)外觀品質(zhì)的影響
比較不同處理果實(shí)及果肉外觀品質(zhì),套袋果實(shí)果形飽滿,果面損傷少,果肉無污染;未套袋果實(shí)除存在病蟲害為害外,從果實(shí)外觀看,果形存在畸形,品相差(圖1)。
由表3可知,3個(gè)品種套袋果實(shí)的L*值均顯著高于未套袋果實(shí),表明套袋處理顯著提高果面亮度,果面更光潔鮮亮。各品種套袋果實(shí)和未套袋果實(shí)的a*值均為負(fù)值,呈綠色,但套袋果實(shí)的|a*|、C*和h°值均顯著高于未套袋果實(shí),果皮著綠色效果更明顯且穩(wěn)定,呈深綠色。另外b*為正值時(shí)呈黃色,未套袋果實(shí)b*值均顯著高于套袋果實(shí),果皮綠色變淺,底色黃色越重,果皮著色不均勻,顏色為黃綠色。
2.3""套袋與未套袋對(duì)果實(shí)可溶性固形物的影響
套袋對(duì)菠蘿蜜果實(shí)可溶性固形物含量的影響如圖2所示。珍珠果、香飲所11號(hào)、香飲所18號(hào)、馬來西亞1號(hào)、馬來西亞2號(hào)和馬來西亞4號(hào)6個(gè)品種菠蘿蜜經(jīng)套袋處理后,其可溶性固形物含量提高,但無顯著差異。其中香飲所18號(hào)在各品種中可溶性固形物含量最高,為19.20%±"0.37%,套袋處理后,可溶性固形物含量為20.00%±"0.45%;馬來西亞4號(hào)在各品種中可溶性固形物含量最低,為13.40%±1.08%,套袋后提高至13.59%±"0.73%。而泰國(guó)四季紅、馬來西亞3號(hào)、馬來西亞5號(hào)和馬來西亞6號(hào)4個(gè)品種套袋果實(shí)較未套袋果實(shí)可溶性固形物含量降低,但差異不顯著,因此未對(duì)果實(shí)可溶性固形物積累造成負(fù)面影響。
2.4""套袋與未套袋對(duì)農(nóng)藥使用次數(shù)和施用量的影響
由圖3可知,菠蘿蜜套袋后,農(nóng)藥的使用次數(shù)減少,降低了農(nóng)藥的施用量。通過測(cè)定,套袋菠蘿蜜的農(nóng)藥使用次數(shù)為1次,而未套袋菠蘿蜜在定果期前(2月上旬至4月)交替使用A、B、C和D藥劑各1次,在定果期(5—6月)分別使用A藥劑與B藥劑各1次,農(nóng)藥使用次數(shù)為6次,果實(shí)套袋減少了5次農(nóng)藥使用次數(shù);每小區(qū)套袋菠蘿蜜的農(nóng)藥施用量為16"g/667"m2,而未套袋菠蘿蜜的農(nóng)藥施用量為113.25"g/667"m2,降低了85.87%的農(nóng)藥施用量。
果實(shí)套袋影響病蟲害發(fā)生率,進(jìn)而影響果實(shí)外觀品質(zhì)。AHMED等[25]對(duì)牛心番荔枝(Annona"reticulata)進(jìn)行套袋處理結(jié)果表明可有效預(yù)防扶桑綿粉蚧(Phenacoccus"solenopsis)為害,套袋果實(shí)未觀察到該蟲,而未套袋果實(shí)蟲口數(shù)量高達(dá)256±6.2頭;康玉柱等[26]對(duì)金蘋果曹州木瓜套袋后發(fā)現(xiàn),蟲傷果率及炭疽病發(fā)病率明顯降低;而羅盧弟等[27]研究發(fā)現(xiàn)大紅火龍果經(jīng)牛皮袋、白紙袋及無紡袋處理的果實(shí)煤煙病(Capnodium"walteri)發(fā)生率分別是未套袋果實(shí)的7.88倍、7.52倍及7.26倍。本研究中,菠蘿蜜經(jīng)套袋處理后,病蟲害發(fā)生率顯著降低。另有研究表明,套袋處理對(duì)果實(shí)外觀品質(zhì)具不同程度的影響[28]。如套袋檸檬果實(shí)著色均勻,果皮光滑細(xì)膩且光潔度高,外觀品質(zhì)明顯改善[29]。本研究也發(fā)現(xiàn)套袋菠蘿蜜的果實(shí)著色均勻,可能是袋內(nèi)微環(huán)境相對(duì)穩(wěn)定和均勻,改變了光照對(duì)果實(shí)表面的影響,使果實(shí)品相更佳,提高果實(shí)品質(zhì)。說明菠蘿蜜果實(shí)套袋不僅可以阻隔外界不良環(huán)境,減少病菌和害蟲為害,同時(shí)還可以提高果實(shí)外觀品質(zhì),使其更具市場(chǎng)競(jìng)爭(zhēng)力。
果實(shí)套袋影響其內(nèi)在品質(zhì),其中可溶性固形物含量是決定果實(shí)內(nèi)在品質(zhì)的重要指標(biāo),是果實(shí)風(fēng)味形成的基礎(chǔ)[30-32]。然而,因套袋水果不同,對(duì)果實(shí)風(fēng)味的影響不一。例如,桃套袋后增加了該果實(shí)的可溶性固形物含量,內(nèi)在品質(zhì)顯著提高[33];翠冠梨套袋后顯著降低其果實(shí)中可溶性固形物含量,抑制果實(shí)風(fēng)味,內(nèi)在品質(zhì)降低[34]。而海沃德獼猴桃、紅陽獼猴桃、貴長(zhǎng)獼猴桃套袋后與未套袋可溶性固形物含量變化不一,是其品種不同導(dǎo)致的差異[35-37]。本研究中,10個(gè)品種套袋果實(shí)可溶性固形物含量與未套袋果實(shí)無顯著差異,表明套袋并未影響菠蘿蜜可溶性固形物的積累,不會(huì)降低果實(shí)內(nèi)在品質(zhì),同時(shí)還說明套袋處理對(duì)不同品種菠蘿蜜果實(shí)品質(zhì)的影響程度相當(dāng),更易推廣。
另外,研究表明果實(shí)套袋技術(shù)還可減少或消除農(nóng)藥濫用[38]。套袋獼猴桃園較未套袋獼猴桃園減少化學(xué)農(nóng)藥使用9次、減少施用量72.2%,果實(shí)農(nóng)藥殘留濃度為0.31"mg/kg,降低了90.0%[39]。本研究也發(fā)現(xiàn)菠蘿蜜套袋后,農(nóng)藥使用次數(shù)減少5次,農(nóng)藥的施用量降低85.87%,果品安全性更高。因此,菠蘿蜜進(jìn)行果實(shí)套袋是實(shí)現(xiàn)農(nóng)藥減施增效及無公害生產(chǎn)的有效措施。
本研究明確了果實(shí)套袋對(duì)菠蘿蜜果實(shí)可溶性固形物含量無顯著影響,其果面無污染、病蟲為害少、農(nóng)藥使用量低,有效提高果品的安全性,結(jié)合生產(chǎn)過程中涉及生態(tài)環(huán)境、生產(chǎn)成本、農(nóng)藥使用安全等因素考慮,套袋處理菠蘿蜜果實(shí)經(jīng)濟(jì)價(jià)值較高。因此,菠蘿蜜果實(shí)套袋技術(shù)可作為一項(xiàng)新的防治技術(shù)應(yīng)用于田間病蟲害防控。
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