永贵大叔带领大家往田地里送肥料！这样的肥料就是氨肥，合作社养的牲口马，牛，骡子，驴，拉的粪便，加上野草和土，雨水，发酵一年而成！变成黑色的臭粪！相当于二铵，比进口美国二铵含氨高！永贵大叔带领挑着粪筐队伍，往刚改造好的梯田里面运送肥料！这样的肥料，就是生产绿色蔬菜，绿色粮食的最好肥料！
奶豆腐是几天前做的，草原上的人离不开奶茶和奶豆腐，无法靠蔬菜和水果来补充的维生素和矿物质，都可以从这里获得。草原，有着神奇的化繁为简的能力。 “木犊”是孟克的牛，正处在哺乳期。妈妈要想顺利从母牛那里获得鲜奶，得先过小牛这一关。鲜奶已经不像天气暖和时那样容易发酵了，妈妈要抓紧时间赶制酸奶豆腐，作为漫长冬天的储备。表皮的酸奶油，先被小心地舀出来，这是很珍贵的部分。发酵的牛奶结成块状的凝乳，蛋白和乳清在火力下分离开，乳清不会被浪费，它们最适合喂牲畜。
Milk curd was made several days ago. Milk tea and curd are indispensable for people living on the grassland. They provide vitamins and minerals that can't be gained from vegetables and fruits. The grassland has the magical power to make things simple. Mudu, cattle of Mengke, is in the lactation period. To get fresh milk from the cow, Mengke's mother has to get permission from the calf. Fresh milk no longer ferments as easily as during warmer days. Mother must hurry to make the milk curd as food reserve for the long winter. The sour cream on the surface is carefully ladled out. And the cream is very precious. Fermented milk curdles. Protein and whey are separated when heated. The whey, though, won’t be wasted as it's best for feeding livestock.
这些牛粪可是好肥料，过去我们在军马事业上，连队每年都堆起一些牛，羊粪发酵，第二年种庄稼。不用化肥，粮食长的很好。这些肥这样浪费太可惜了。
