发布日期:2010-06-21 19:05:23
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一般说来,大多数作物适宜在中性或接近中性的土壤中生长。经测定某土壤的pH为5.5,要改良它,应在土壤中施加适量的( ) A.氢氧化钠 B.熟石灰 C.食盐 D.盐酸 |