蜘蛛是怎样结网的？
空气流动在蜘蛛结网的过程里有很大作用，因为蜘蛛可能要先从某一固定物的一端放出丝线，然后这些丝线会摇摇荡荡飘到彼处的某固定物上，形成网的基本构架。然后在此基础上进行进一步的编织。
蜘蛛从一棵树上它的立脚点，引出许多根长度足以到达对面的长丝，于是这些蛛丝就随风飘动，蜘蛛则时刻用脚去触触蛛丝的固着点。如果有哪一根丝拉不动了，那么这根丝就已经缠在对面的树上了。之后,蜘蛛会放出一根悬垂丝,并在这根丝的中段加上第三根丝成Y字状,形成蜘蛛网最初的3根不规则半径。再加上50多条线形成一张网的雏形。
接下的工作是铺设螺旋线,纺织成网。蜘蛛以网心为起点,织出一根自内向外的螺旋线,当做下一道工序的“脚手架”。但直到“脚手架”搭好,蜘蛛所织出的网还没有黏性,也就是说还粘不住昆虫。这时,蜘蛛便从外向网心开始铺设有黏性的丝,即捕食螺线,同时把“脚手架”啃吃掉,完成最后一道工序。
![](https://wkrtcs.bdimg.com/rtcs/image?w=420&md5sum=bfb334d04917f105a7005bac703880cd&sign=4e8a78a7eb&rtcs_flag=1&rtcs_ver=3.2&l=webapp&bucketNum=77&ipr={"t":"img","w":"420","h":"280","dataType":"jpeg","c":"word/media/image1.png","imgOriW":900,"imgOriH":600})
蜘蛛结网全过程，图1
![](https://wkrtcs.bdimg.com/rtcs/image?w=418&md5sum=bfb334d04917f105a7005bac703880cd&sign=4e8a78a7eb&rtcs_flag=1&rtcs_ver=3.2&l=webapp&bucketNum=77&ipr={"t":"img","w":"418","h":"279","dataType":"jpeg","c":"word/media/image2.png","imgOriW":900,"imgOriH":600})
蜘蛛结网全过程，图2
![](https://wkrtcs.bdimg.com/rtcs/image?w=418&md5sum=bfb334d04917f105a7005bac703880cd&sign=4e8a78a7eb&rtcs_flag=1&rtcs_ver=3.2&l=webapp&bucketNum=77&ipr={"t":"img","w":"418","h":"279","dataType":"jpeg","c":"word/media/image3.png","imgOriW":900,"imgOriH":600})
蜘蛛结网全过程，图3
![](https://wkrtcs.bdimg.com/rtcs/image?w=412&md5sum=bfb334d04917f105a7005bac703880cd&sign=4e8a78a7eb&rtcs_flag=1&rtcs_ver=3.2&l=webapp&bucketNum=77&ipr={"t":"img","w":"412","h":"274","dataType":"jpeg","c":"word/media/image4.png","imgOriW":900,"imgOriH":600})
蜘蛛结网全过程，图4
![](https://wkrtcs.bdimg.com/rtcs/image?w=412&md5sum=bfb334d04917f105a7005bac703880cd&sign=4e8a78a7eb&rtcs_flag=1&rtcs_ver=3.2&l=webapp&bucketNum=77&ipr={"t":"img","w":"412","h":"274","dataType":"jpeg","c":"word/media/image5.png","imgOriW":900,"imgOriH":600})
蜘蛛结网全过程，图5
![](https://wkrtcs.bdimg.com/rtcs/image?w=412&md5sum=bfb334d04917f105a7005bac703880cd&sign=4e8a78a7eb&rtcs_flag=1&rtcs_ver=3.2&l=webapp&bucketNum=77&ipr={"t":"img","w":"412","h":"274","dataType":"jpeg","c":"word/media/image6.png","imgOriW":900,"imgOriH":600})
蜘蛛结网全过程，图6
![](https://wkrtcs.bdimg.com/rtcs/image?w=412&md5sum=bfb334d04917f105a7005bac703880cd&sign=4e8a78a7eb&rtcs_flag=1&rtcs_ver=3.2&l=webapp&bucketNum=77&ipr={"t":"img","w":"412","h":"274","dataType":"jpeg","c":"word/media/image7.png","imgOriW":900,"imgOriH":600})
蜘蛛结网全过程，图7
![](https://wkrtcs.bdimg.com/rtcs/image?w=412&md5sum=bfb334d04917f105a7005bac703880cd&sign=4e8a78a7eb&rtcs_flag=1&rtcs_ver=3.2&l=webapp&bucketNum=77&ipr={"t":"img","w":"412","h":"274","dataType":"jpeg","c":"word/media/image8.png","imgOriW":900,"imgOriH":600})
蜘蛛结网全过程，图8
![](https://wkrtcs.bdimg.com/rtcs/image?w=412&md5sum=bfb334d04917f105a7005bac703880cd&sign=4e8a78a7eb&rtcs_flag=1&rtcs_ver=3.2&l=webapp&bucketNum=77&ipr={"t":"img","w":"412","h":"274","dataType":"jpeg","c":"word/media/image9.png","imgOriW":900,"imgOriH":600})
蜘蛛结网全过程，图9
![](https://wkrtcs.bdimg.com/rtcs/image?w=412&md5sum=bfb334d04917f105a7005bac703880cd&sign=4e8a78a7eb&rtcs_flag=1&rtcs_ver=3.2&l=webapp&bucketNum=77&ipr={"t":"img","w":"412","h":"274","dataType":"jpeg","c":"word/media/image10.png","imgOriW":900,"imgOriH":600})
蜘蛛结网全过程，图10
![](https://wkrtcs.bdimg.com/rtcs/image?w=412&md5sum=bfb334d04917f105a7005bac703880cd&sign=4e8a78a7eb&rtcs_flag=1&rtcs_ver=3.2&l=webapp&bucketNum=77&ipr={"t":"img","w":"412","h":"274","dataType":"jpeg","c":"word/media/image11.png","imgOriW":900,"imgOriH":600})
蜘蛛结网全过程，图11
![](https://wkrtcs.bdimg.com/rtcs/image?w=413&md5sum=bfb334d04917f105a7005bac703880cd&sign=4e8a78a7eb&rtcs_flag=1&rtcs_ver=3.2&l=webapp&bucketNum=77&ipr={"t":"img","w":"413","h":"262","dataType":"jpeg","c":"word/media/image12.png","imgOriW":347,"imgOriH":220})
蜘蛛结网全过程，图12
本文来源：https://www.2haoxitong.net/k/doc/ab51fa2a59fb770bf78a6529647d27284b73377c.html
文档为doc格式