成都龙泉山地区果木经济区的地质地球化学特征

被新构造运动抬升的时代较新的肥沃的湖沼沉积物造就了龙泉山的水果之乡。不同的果木适应不同的土壤条件,双流太平果木区,有机质高,特别是速效钾高有利于果木的生长。金堂脐橙区的K2O、P、Mn、Se高,生长在姜石黄壤土和黄红紫泥土的界面上,造成元素的互补是造就“中国脐橙第一乡”的主要原因。蒲江粑梨产区的N、K2O、Se高,茶叶产区的Cu、B、Mo、TFe2O2、Se高,土壤偏酸性。这些地区农作物有害元素均是低值区,有利于发展绿色农业。

GEOCHEMICAL FEATURES OF ORCHARD ECONOMIC DISTRICTS IN CHENGDU LONGQUAN HILL REGIONS

The rich lake and pond's sediment uplifted by new construction movement brings up the fruit regions of the Longquan hill. Different kinds of fruit trees adapt to different soil conditions. The rich organic substances, especially the quick result kalium-ferlizer benefits the fruit tree's growth in Shuangliu Taiping orchards. The high K_2O, P, Mn and Se, in Jintang umbilical orange area, as complements on the interface of the ginger-stone-yellow soil and the yellow-red-purple soil, are the main factor bringing up "Umbilical Orange Area No.1 in China". The N, K_2O and Se are abundant in Pujiang pear area, and the Cu, B, Mo, T Fe_2O_3 and Se are high in the tea zone with partial acidity soil. In these regions, the harmful elements in low quantity can help to develop green agriculture.