【#实用文# #西瓜虫的观察日记(5篇)#】处理大批量的文档我们使用了多种工具，遇见这种情况，我们就需要借鉴一些好的范文。你不知道这些范文能否为你提供帮助？经好工具范文网精心推荐接下来为大家介绍的是“西瓜虫的观察日记”，若您想再次查看此页记得立即收藏方便查找！
西瓜虫的观察日记(篇1)
今天，秋高气爽、金橘飘香。我到奶奶家玩，奶奶首先把我带到菜地里挖野菜，挖呀、挖呀！野菜没挖到，倒是挖到了西瓜虫，我让奶奶拿来一个空瓶子，把西瓜虫放进瓶子里好好的观察观察……
西瓜虫的学名叫“鼠妇”，又叫潮湿虫、团子虫，属于无脊椎动物。身体像圆弧形状，我估算了一下，西瓜虫大约长9~15毫米。后背稍微隆起，肚子是扁平的；颜色是灰褐色；背部是不软不硬的壳，我一打它它就缩成一个圆溜溜的西瓜，我把它按死后，我发现它的血是白色的我当时吓的不知所措。
血应该是红色的，为什么西瓜虫的血是白色的呢？这真让人感的奇怪……我又发现西瓜虫碰到蜘蛛网不会被粘住，因为它的外壳有一层薄薄的油，防止被蜘蛛网粘住。我听奶奶说：“西瓜虫喜欢生活在潮湿、阴里，暗的土壤 喜欢吃植物的根茎，是害虫。 西瓜虫有很多值得我去发现、研究的地方，我长大想当昆虫学家，探索昆虫世界的无穷奥妙！
西瓜虫的观察日记(篇2)
今天下午，老师安排我们几个女生去帮一年级的新生大扫除。正当我们卖力地清扫着墙根儿的落叶时，一个充满惊喜的声音喊道：“西瓜虫！快看，这里有西瓜虫！”
“西瓜虫？一群小虫子而已，有什么好大惊小怪的……”我听同伴嘟囔着，西瓜虫。它的全身是灰黑色的、身子宽宽的、扁扁的、背上披着一层硬壳、壳上有一条条清晰的纹路，身下有很多小腿。只见它慌里慌张地东一头西一头地逃着。淘淘伸手想去捉它，可没想到西瓜虫立刻就蜷成一团，一动也不动了，真像一只微缩小西瓜。
“我知道它有七对脚。”“你知道为什么一碰它，它就缩成小球吗？”“这样滚得快！”“不对！”……不远处的一年级新生们正在七嘴八舌地争论着，童心大发的我不由得大声插了一句：“这是昆虫自我保护的本领，它是在假死呢！”当年幼儿园老师告诉我们的答案，没想到现在派上用场了。看着他们好奇而又有些羡慕的表情，我的心里美滋滋的。
小小的西瓜虫，带给我们多少乐趣啊！
西瓜虫的观察日记(篇3)
二年级时暑假里的一天，天色很热，我到姐姐家去玩，吃完午饭后，我和姐姐一起来到楼下的小花园。
我对姐姐说：“我们玩西瓜虫赛跑吧。”姐姐说：“好吧。”于是，我们就开始捉西瓜虫了。西瓜虫躲在阴暗湿润的角落，我费了好长时间，才捉到了两只个子小的。再向姐姐看去，啊!他已经捉了十多只了。正在我着急时，眼睛一亮，发现了一只又大又黑的西瓜虫。我赶快跑上去，抓住了它，它立刻变成了一个圆圆的“小西瓜”。
我们俩不一会都捉了好多只西瓜虫，马上就要预备比赛了。比赛场地是用呼啦圈围成的，我们用一块石头当重点。比赛开始了，我和姐姐的西瓜虫都奋力地向前爬，可我的西瓜虫爬着爬着就拐弯了，我赶快拿树枝把它扶正。可是一会儿，它又跑偏了，我就再把它正过来。看来，这一局我是赶不上姐姐了。
我对姐姐说：“我们玩西瓜虫跨栏吧。”姐姐同意了。我们用小木棒作烂。我和姐姐同时把西瓜虫放到起跑线上。“三、二、一、开始!”我们同时放开手。只见西瓜虫吃力地往上爬，又急速地冲下去往前飞驰。看着它们用细短的小腿托着粗笨的身体爬上爬下，真是太有去了。
时间过得可真快，转眼间一下战书的时间就过去了。看着自己黑乎乎脏兮兮的一双小手，心里开心极了。没想到小小的西瓜虫给我们带来这么大的乐趣。
西瓜虫的观察日记(篇4)
今天，我和好朋友邬其岑约好了，中午一起去抓几只西瓜虫观察一下。西瓜虫又叫“妇鼠”，只有黄豆一样大小，是椭圆形的，它的头上长着一对触角，灰色的身子，背上披着一身盔甲，还有一排细小的纹路。用手一碰，它马上就缩成一个小小的圆球，真像一个袖珍西瓜呀!这大概就是它名字的由来吧!到了中午，我们拿着几个小瓶子，高高兴兴的去抓西瓜虫。到了公园的八角亭后，我们就分头开始寻找目标，我选了一块比较潮湿的草地，拿出小铲子用力地挖了起来。
不一会儿，就挖到一个松软的洞，里面爬出了几个大大的西瓜虫。我一把就把它们抓在手里，放进了瓶子里。我回到八角亭，我等了半天也不见他的影子，于是我就去找他，发现他正趴在一块水泥地上找西瓜虫。我哭笑不得地对他说：“西瓜虫可不会在水泥地上，他喜欢在潮湿的泥土里。”接下来我们选了几个地方，始终没有虫虫的踪影，但邬其岑一点也没有气馁，最后在我们的共同努力下，终于也抓到了两只黑色的大西瓜虫。通过这次抓西瓜虫的玩乐，我们还明白了西瓜虫喜欢住在阴暗、潮湿和松软的泥土里或小石板的下面，一般把巢做在离地面1～3厘米的地方。西瓜虫真是一种有趣的昆虫，下次我们再一起来观察它吧!
西瓜虫的观察日记(篇5)
Day 1: The Arrival of the Watermelon Worms
I woke up this morning to find some peculiar creatures crawling all over my watermelon plants. As I took a closer look, I realized that they were watermelon worms! They were small and green with stripes running along their bodies. They had tiny legs that moved rapidly as they crawled along the vines. I had read about these worms before and knew that they could cause serious damage to my watermelon plants if left unchecked. I needed to act fast to protect my crop.
Day 2: Battle Against the Watermelon Worms
I spent most of today trying to get rid of the watermelon worms. At first, I tried picking them off the vines one by one, but soon realized that there were just too many of them. I then remembered reading about a natural pesticide that used neem oil to repel insects. I mixed some neem oil with water and sprayed it all over the watermelon plants. It seemed to work as the worms stopped crawling around and seemed to be avoiding the sprayed areas.
Day 3: The Watermelon Worms Retreat
I woke up this morning to find that most of the watermelon worms had disappeared. I went out to inspect the plants and found that there were no new signs of damage. It seemed like the neem oil had done the trick and repelled the worms away from my watermelon plants. I felt relieved and happy that my crop was safe again.
Day 4: A New Infestation
Just when I thought that I had won the battle against the watermelon worms, I discovered a new infestation on another plant. This time, the worms were bigger and had already started to eat through the leaves. I knew that I had to act fast before they caused any more damage. I again sprayed neem oil all over the plant and waited to see if it would work.
Day 5: Victory at Last
Today, I checked on the watermelon plant that was infested with the bigger worms, and to my relief, they were all gone! The neem oil had once again repelled the worms away from my plants. I was so glad that I had discovered this natural pesticide and decided to use it regularly on my plants to prevent any future infestations. The battle against the watermelon worms was finally over, and I was left with a healthy and thriving crop.
