【摘要】 对黄土地区黄化和非黄化的果园不同深度土壤性状进行分析,结果表明:在对黄化有显著影响的因素中,不同土壤性状对黄化的影响的主要深度不同,但大多数土壤性状在两类果园土壤间都在40～60cm差异显著性达到0.01水平。果园土壤施肥量增大,导致氮磷钾等养分与铁比例失调是近年来黄土地区果树黄化加重的重要原因。更多还原

【Abstract】 Analysis of soil properties at different depths of orchard Soil in a Loess area indicated that soil properties at diffuent depths are significant different between chlorotic and green orchards, but the most difference is at the depth of 40-60cm between chlorotic and green orchards(P<0.01). The results also suggested that the reason of chlorosis is mainly due to nutrient imbalance between N, P, K and Fe in soil.更多还原