【摘要】 在经模拟酸雨淋洗后的三种紫色土上(除石灰性紫色土外)种植的莴苣和四季豆,其生长结果表明:在土壤一蔬菜生产的农田环境中,常年降雨的临界pH值应大于4.0.更多还原

【Abstract】 The results of the growing lettuce and kidney bean on two kinds of purple soils soaked by simulant acid rain (besides the calcareous one) indicate: the critical pH of the perennial raining should be higher than four in cropland environment of soil-growing vegetables.更多还原