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class="fxtime">2017-01-21 17:27:45</time></span> <span id="splce9e" class="sp1 c6 fl"><em id="zuozhe" class="noshow">曾揚(yáng)</em><em class="user_id noshow">892</em>由 <em class="nickname"></em> 分享</span> <span id="4jfikef" class="fl arc_btn"></span> </div> </div> </div> <div id="e8egqlx" class="y_ju"></div> <div id="vcykuoi" class="con_article con_main" id="contentText"> <p> 　　蒼蠅的食性取決于其種類。有專門吸吮花蜜和植物汁液的，有專門嗜食人、畜血液或動(dòng)物創(chuàng)口血液和眼、鼻分泌物的。下面是學(xué)習(xí)啦小編精心為你整理的蒼蠅搓腳的原因，一起來看看。</p><h2> 　　蒼蠅搓腳的原因</h2><p> 　　原因一</p><p> 　　蒼蠅沒有鼻子，但是，它有另外的味覺器官，并且還不在頭上臉上，而是在腳上。只要它飛到了食物上，就先用腳上的味覺器官去品一品食物的味道如何，然后，再用嘴去吃。因?yàn)樯n蠅很貪吃，又喜歡到處飛，所以見到任何食物都要去嘗一嘗，這樣一來，蒼蠅的腳上就會(huì)沾有很多的食物，這樣既不利于蒼蠅飛行，又阻礙了它的味覺。所以蒼蠅把腳搓來搓去，是為了把腳上沾的食物搓掉。</p><p> 　　因?yàn)樯n蠅有這種壞習(xí)慣，所以會(huì)傳染很多病菌。蒼蠅如果在糞便、污水里站過又飛到食物上去，就會(huì)把病菌留在食物上。另外，蒼蠅還有個(gè)更壞的習(xí)性，就是當(dāng)它落在食物上時(shí)，不僅吃食物，而且，還要排糞，把腸子里的一些活著的病菌、寄生蟲卵等等都排在食物上。如果人們吃了這樣的食物，很容易感染上疾病，影響身體健康，甚至危及生命。</p><p> 　　原因二</p><p> 　　每當(dāng)蒼蠅飛到臟物(如糞便、垃圾、腐敗的動(dòng)物尸體等)上空時(shí)，都會(huì)降落在上面，在上面爬來爬去，用自己的腳在上面蹭來蹭去，把上面的細(xì)菌粘附在自己的腳上，腳上就粘有大量細(xì)菌。當(dāng)蒼蠅完成這一任務(wù)時(shí)，就會(huì)重新起飛，然后落在人類的食物上，開始搓腳，把腳上的細(xì)菌搓下來，細(xì)菌就會(huì)落在食物上，細(xì)菌的傳播過程就完成了。當(dāng)人吃下這些食物時(shí)，細(xì)菌就會(huì)進(jìn)入人體，并寄生在人的體內(nèi)。蒼蠅對(duì)細(xì)菌的生存有利，為細(xì)菌提供了生存的條件。蒼蠅和細(xì)菌屬于共生關(guān)系。</p><h2> 　　蒼蠅的飼養(yǎng)方法</h2><p> 　　蒼蠅的飼養(yǎng)方法多種，現(xiàn)介紹用塑料大棚養(yǎng)蒼蠅，有兩種方法：</p><p> 　　一種是在大棚中設(shè)置立體紗網(wǎng)，在網(wǎng)中養(yǎng)蒼蠅;另一種是在大棚中散養(yǎng)，在大棚中堆放一定量的草秸、草繩，視每架大棚為一籠，這種辦法較前面的那種方法投資大，占地面積大，飼養(yǎng)密度小。在大棚里設(shè)紗網(wǎng)的養(yǎng)殖方法，一般搭建長(zhǎng)20米，寬4米，低墻高2米，高墻高3米的塑料大棚，紗網(wǎng)設(shè)3層。</p><p> 　　選擇紅頭蒼蠅作為養(yǎng)殖品種，紅頭蒼蠅是農(nóng)家?guī)谐Ｒ姷念^為紅色、背為亮綠色的那種，各地對(duì)其叫法不一，由于它的頭為紅色，所以我們稱其為“紅頭蒼蠅”。</p><p> 　　成蠅的飼養(yǎng)方法：</p><p> 　　飼養(yǎng)籠：籠架大小為50×50×50厘米，其上系有同樣大小的紗網(wǎng)，紗網(wǎng)一側(cè)的一端之中央為直徑20厘米左右、長(zhǎng)33厘米的布袖，以便取放蒼蠅和更換食料。</p><p> 　　飼養(yǎng)皿(直徑7～9厘米)，盛放砂糖供成蠅取食，或其內(nèi)放一塊吸飽水的泡沫塑料，為成蠅提供水源，也可以用以誘卵。</p><p> 　　成蠅每籠養(yǎng)殖8000～10000只。無論是剛剛采集到的成蠅種或羽化后的成蠅，都要及時(shí)供給砂糖和水，以防饑餓死亡。成蠅一生產(chǎn)卵3～5次，最多達(dá)10次，每次產(chǎn)卵100～150～300個(gè)不等。</p><p> 　　幼蟲的飼養(yǎng)方法：</p><p> 　　先將飼料置于飼養(yǎng)盒中，厚度以不超過4厘米為好，后將誘集到的蠅卵(一日齡幼蟲)用接蟲鏟慢慢放入飼養(yǎng)盒中的飼料上，幼蛆即可慢慢分散開并鉆入飼料，幼蟲吃飼料時(shí)，一般自上而下，如盒中濕度、溫度大或飼料不足、蟲口密度過大等，致使幼蛆向外爬，飼養(yǎng)人員要隨時(shí)檢查，及時(shí)采取措施如：添料或降溫、降濕等。</p><p> 蒼蠅搓腳是因?yàn)槭裁聪嚓P(guān)文章：</p><p> 1.<a _href="http://lpo831.com/fangfa/yangzhi/889088.html" href="http://lpo831.com/fangfa/yangzhi/889088.html" target="_blank">蒼蠅的養(yǎng)殖方法</a></p><p> 2.<a _href="http://lpo831.com/ge/fasheng/1646854.html" href="http://lpo831.com/ge/fasheng/1646854.html" target="_blank">蒼蠅是如何發(fā)聲</a></p><p> 3.<a _href="http://lpo831.com/fangfa/1222210.html" href="http://lpo831.com/fangfa/1222210.html" target="_blank">驅(qū)除蒼蠅的方法</a></p><p> 4.<a _href="http://lpo831.com/yingyu/kouyu/442374.html" href="http://lpo831.com/yingyu/kouyu/442374.html" target="_blank">蒼蠅用英語怎么說</a></p><p> 5.<a _href="http://lpo831.com/fangfa/1088967.html" href="http://lpo831.com/fangfa/1088967.html" target="_blank">消滅蒼蠅的方法</a></p><p> 6.<a _href="http://lpo831.com/fangfa/1243362.html" href="http://lpo831.com/fangfa/1243362.html" target="_blank">殺蒼蠅最好的方法</a></p> </div> <div id="ymd43zo" class="y_ju"></div> <div id="3cknyr4" class="pnum"> <ul id="page_slice"> <div id="mbq3ikg" class="clear"></div> </ul> </div> </article>  <div id="p5r9lnp" class="list_hot ar_related bj_mt20 louti"> <h4 class="title2 title2_te">相關(guān)文章</h4> <ul class="bj_mt20"> <li id="xleghk0" class="lb_3 chao"> <time>05-14</time> <a href="http://lpo831.com/yuwen/yuedudaan/4509081.html" title="《蒼蠅的貢獻(xiàn)》說明文閱讀答案" target="_blank">《蒼蠅的貢獻(xiàn)》說明文閱讀答案</a> </li> <li id="3hr0hbe" class="lb_3 chao"> <time>05-14</time> <a href="http://lpo831.com/yuwen/yuedudaan/4509026.html" title="《蒼蠅·蜻蜓·螢火蟲的啟迪》閱讀答案說明文" target="_blank">《蒼蠅·蜻蜓·螢火蟲的啟迪》閱讀答案說明文</a> </li> <li id="pqsl4vg" class="lb_3 chao"> <time>09-17</time> <a href="http://lpo831.com/zhishi/dongwu/4008440.html" 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