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近年来,国内外学者开始研究豆科绿肥植物的改土培肥的根系效应。美国学者F.E.Allison(1973)指出,“从绿肥植物上获得很重大的利益是通过它的根系实现的,特别是深根豆类如苜蓿,草木樨,羽扇豆和葛藤等,其根系效应更为突出……。”据陕西省农业科学院土肥所(1976)报导:把种过草木樨的土壤中的根系与根瘤全部拾走,剩下纯茬土种小麦,每盆生产小麦籽实293克,比未种过草木樨的同一土壤每盆生产小麦籽实205克,多收小麦籽实88克,增产38％。为此我们从1976年以来对草木樨根系及其效应作了一些较深入的观察和试验。现将研究方法、试验经过与初步结果简介如下。
In recent years, scholars at home and abroad began to study the root system effect of soil fertility improvement of leguminous green manure plants. American scholar FEAllison (1973) pointed out that “obtaining great benefits from green manure plants is achieved through its roots, especially deep-rooted legumes such as alfalfa, plantain, lupine and kudzu, which have more root effects Highlight ... .... ”According to the Shaanxi Provincial Academy of Agricultural Sciences, Soil and Fertilizer (1976) reported: the kinds of soil planted in the roots and nodules pick up all leaves, leaving pure stubble soil wheat, 293 grams per pot of wheat seed production, The same soil without grass mullet produced 205 grams of wheat seeds per pot and 88 grams more wheat seeds, yielding 38% more yield. For this reason, we have made some in-depth observations and experiments on the roots and their effects of Radix pilosula since 1976. Now research methods, test results and preliminary results are as follows.