紫色土锌锰氯与氮磷钾配施对大麦的营养效应

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。

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

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.