积肥篇 - 秋风扫落叶

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金秋十月,大雁南飞。街道两旁的红枫树、橡树、还有那些不知名的树木,一个个华丽转身,变出各种漂亮的颜色。红枫树红如血染的风采,橡树黄如金灿灿的盔甲。一阵秋风过后,满地是色彩斑斓的落叶。邻居们抱怨扫不完的落叶,我倒是大喜过望,落叶是制作有机肥的绝好原料,上帝的免费赐予!

两年前我刚开始收集树叶制作有机肥,想当然把收集来的树叶,堆在田间。期望着来年春天,落叶变成肥沃的土壤。可是事与愿违,到了春天,树叶还是树叶,完全没有腐化。查了谷歌才知道,树叶如果不粉碎,要一到两年才能完全降解(见:百家讲坛TED上专家论证 - Everything You Know About Composting is Wrong)。

于是我购买了一台树叶粉碎机:Sun Joe SDJ616 Electric Leaf Mulcher/Shredder | 16:1  。它能把16袋子树叶粉碎成1袋!大概一百多加币。

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这个机器的原理就是用快速旋转的塑料线作为刀具,切割树叶。粉碎后的树叶落入底下的袋子里。

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收集落叶

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树叶一定要干燥的,不能混有树枝。这种树叶粉碎机是不能粉碎树枝或草。

如果树叶是湿的,每次投放量要小。否则堵塞机器,可能烧毁机器。

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虽然这个机器可以把树叶粉碎的特别细小,但是吞吐的速度就慢了,还费塑料线。实际上堆肥也不需要把树叶粉碎成面粉一样细。

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操作时,一定要带N95口罩,站在上风口,避免吸入粉尘。

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我戴上了儿子画油画时防毒面具。

粉碎好的树叶放入一个一立方米的大编织袋里,再混合10桶Bokashi发酵后的厨余垃圾,放置室外过冬。

如何发酵厨余垃圾又没有味道,请看我的博客 积肥篇-厨余

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室外过冬。刚开始你能感觉到它发热,大概50度左右。想了解如何巧用大编织袋堆肥,请看我的博客 - 巧用大编织袋

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等到来年四月,大地回春,居然在大袋子封口处长出一朵白蘑菇!

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来年4-5 月,强力有机肥已尽腐熟,参入土里,那是种啥长啥,丰收在望。

去年我把我家半条街的树叶都收了,今年要把一条街的都收走!那个父母不喜欢勤劳的孩子?上帝一定欢喜。

一青 2017.10

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