紫色土锌锰氯与氮磷钾配施对大麦的营养效应

STUDY ON THE EFFECT OF Zn Mn AND CI ON NUTRITIONS OF BARLEY

当土壤有效锰(DTPA—Mn)为13.3ppm时,大麦可不施锰肥。在有效锌为0.3ppm的土壤上施用锌肥时,不含氯的氮肥处理中,大麦增产述18～20%;而含氯氮肥仅增产5～6%。含氯氮肥各处理的土壤和植株锌、锰含量以及产量均比不含氯氮肥高,表明钙质紫色土上施用含氯氮肥优于不含氯氮肥。氯活化了土壤中的锌、锰,促进了大麦对锌和锰的吸收。

Mn has no significant effect when its available concentration is 13.3 ppm in the soil. Appliction Zn increases more yield in N fertilizer not including chlorine treatments than in N fertilizer containing chlorine treatments when its available concentration is 0.3 ppm in the soil. The yield and content of Zn, Mn in barley plant and soil are higher in N fertilizer including chlorine treatments than in N fertilizer not containing chlorine treatments. Its better application N fertilizer including chlorine than not containing chlorine in the calcareous purple soil. Chlorine increases content Zn in the soil and stimulates the uptake of Zn and Mn by barley.