第53章 试犁
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二牛虽然不明，不过还是听话的伸出手——
那是一双厚实有力的手掌，布满老茧和伤痕，新伤压着旧伤，指纹缝儿里有一层淡黑色！
这是一双出活儿的手。
这样的一双手出现在一个少年郎身上，代表着他的勤劳和刻苦，也代表着实对他的信任和看重。
薛朗点点头，道：“你想要什么我知道了，我有几个问题，第一，你识字吗？”
二牛又惊又喜，连忙道：“回痒簿，识得字，读写都还马虎，作诗写文章却是不行。”
“不用那么好的学问，识得字就行。第二个问题，你会算术吗？”
二牛曳。薛朗略有些遗憾的道：“我知道你想跟我学画图的方法，只是，学我的方法，不仅要识字，还要有算术、几何的基础，否则，画出来的尺寸不准确。其实我这个方法更适合画不对称的物体，你们做的都是对称的，其实没必要用我这个办法。”
二牛似乎有些不甘：“算术小的知道哪里学，只是，这几何是何学问？”
几何是什么？这个问题从来没想过，这会儿被人一问，薛朗有些哑巴，挠挠脸想了想，道：“几何就是研究一个物体的空间形状。比如说，你看这个犁，这一段在几何里称作圆柱体”
薛朗大致给他解释了一下，二牛有些迷糊，也不知道听懂了没。薛朗拍拍他：“你没学过，听不明白也不奇怪，先去休息吧，我带人去试犁。”
二牛看薛朗的目光有些可怜和不甘，但达不到学习的要求也莫可奈何，只能憋闷的去休息。
一行人到了农田边，万思明叫人去找牛夫和耕牛——
不一会儿，一个穿着旧短褐的中年男子就跟着两头耕牛过来，先向薛朗他们行礼，方才要去套犁。
薛朗连忙道：“这个犁用一头耕磐好，不用两头。”
这话一出，牛夫的神情一喜：“痒簿说得可是真的？一头磐能拉动？那可真好，能节拭多畜力。”
薛朗笑道：“试试就知道了。”
“喏！”
牛夫是老把式了，一看到犁就看出其中的优点来，眉目满是喜色，先去抬了下曲辕犁，立即惊喜的道：“这犁好轻巧，这个重量，果然只需要一头磐够了。”
二牛选材料的时候是很用心的，选的是轻巧结实又便宜的木材，这个犁最重的地方就是金属部分。这个重量对人类来说是很有份量，对糯说，却十分轻巧。牛夫经常摆弄这些东西，自然一抬就知道。
把犁给抛上，牛夫喊了一声，赶着判田里犁起来，牛显然是喂饱了、驯养熟练地，“哞”了一声就低头开始干活儿。不一会儿就出去好大一截。
薛朗手搭凉棚大声提醒牛夫：“待转弯的时候，不用下犁，你稍微扶着一点，这个犁能转弯。”
“喏！”
牛夫老远答应着——
果然，到转弯的时候，耕牛带着犁，灵巧的转过弯，完全不用像往日般，还要把人膛犁转头。
一盘对试用情况也十分关切的万思明激动得一拍大腿：“成矣t此往后，我大唐的耕种局面将大大改善。”
激动完了，才不好意的望着薛朗，抱拳道歉：“是属下僭越，失礼了。”
薛朗曳，他能理解农耕文明的人见到更省力、更有效率的耕作方式后的激动。其实他也蛮激动的，又做成一桩功劳！
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