網上找尋"根瘤菌"啦
llaus 發表於 2010-7-12 08:45 
唔該晒,小寶&illaus....老啦, 讀過d野比番晒老師啦....
睇完d資料,我結論係咁..(唔知啱唔啱,請指教!)
種梗既過程,唔一定對其他植物有好處,係要種完將成棵植物鋤返入田做基泥,咁d氮先會release 出來....
以下一段係我網上揾到既資料...
Plants that contribute to nitrogen fixation include the legume family – Fabaceae – with taxa such as clover, soybeans, alfalfa, lupines, peanuts, and rooibos. They contain symbiotic bacteria called Rhizobia within nodules in their root systems, producing nitrogen compounds that help the plant to grow and compete with other plants. When the plant dies, the fixed nitrogen is released, making it available to other plants and this helps to fertilize the soil[1][3] The great majority of legumes have this association, but a few genera (e.g., Styphnolobium) do not. In many traditional and organic farming practices, fields are rotated through various types of crops, which usually includes one consisting mainly or entirely of clover or buckwheat (family Polygonaceae), which were often referred to as "green manure."
source: http://en.wikipedia.org/wiki/Nitrogen_fixation |
顯身卡.gif)
.gif)
