论文部分内容阅读
一、绪言广种绿肥,大开肥源,这是迅速提高作物产量行之有效的农业措施。我国在世界上栽培绿肥最古,根据历史记载,中国利用绿肥来培养地力已足有四千年之久。礼记月令(公元前1134—547)有“仲夏之月,犁以杀草,可以粪田畴,可以美土疆”;齐民要术(公元前385—533)有“凡美田之法,绿豆为上,小豆,胡麻次之,悉皆五、六月中(禾冀)种,七、八月犁掩杀之,为春谷田,则每亩收十石,其美与蚕天熟粪同”。从这些记
I. INTRODUCTION The wide variety of green manure and the open source of fertilizer are the effective agricultural measures to rapidly increase crop yields. China has the oldest cultivated green manure in the world. According to historical records, it has been enough for four thousand years since China used green manure to cultivate its fertility. The Book of Rites month (1134-547 BC) There are “months of midsummer, plow to kill grass, you can dug fields, you can beautiful Xinjiang”; Qi Min Yao surgery (385-533 BC) "Where the law of the United States, Mung bean on the adzuki bean, followed by flax, are all five or six months (Heji) species, in July and August plow to hide the kill, for the Valley of Spring Valley, then received ten stone per mu, . From these notes