【摘要】 按照Gerdemann 1963和Phillips1970的方法,笔者调查了小麦、大豆、玉米等和某些野生植物的泡囊——丛枝菌根。调查结果表明: 1、某些农作物被泡囊——丛枝菌根的侵染率决定于作物的不同发育阶段,与根的不同部位有关,并随不同土壤类型和植物的营养条件有所不同。贫磷土壤中具有较高的侵染率。 2、生长在蘑菇圈外的野生植物,较之生长在蘑菇圈内者具有较高的VA茵根的侵染率。更多还原

【Abstract】 With the methods suggested by Gesdemann (1963) and Phillips (1970) , investigations on crop plants-wheat, barley, soybean, and corn were carried out. Results show that the infection rate of VA mycorrhizas to these crops varies with different developing stages, parts of roots, types of soil and nutrition of the crops. Higher infection rate were found in soils with poor phosphorus content.Invistigation on some wild plants show that the infection rate of VA mycorrhizas to wild plants grown outside mushroom circle is higher than those grown inside the circle.更多还原