【摘要】 试验研究表明，在陕西中部、北部旱塬低锰低锌土壤上，锰锌肥单施或配施均能提高小麦产量，锰锌配施增产１０％以上，锰、锌单施增产４％～８％，锰肥增产效果又优于锌肥，其增产顺序为：锰锌＞锰＞锌＞对照；土壤有效锰５ｍｇ／ｋｇ，有效锌０．４ｍｇ／ｋｇ为小麦缺锰缺锌的临界指标；在田间条件下锰锌配施以每公顷１５ｋｇ为宜，锰肥浸种或土施都有显著的增产效果。更多还原

【Abstract】 The experiment results show that in the midland and northern rainfed highland of Shaanxi Province, the Mn and Zn contents in soils are low. Mn and Zn fertilizer addition with single or combination application could increase wheat yield. Combined application of Mn and Zn could increase wheat yield by 10 % while the single application of Mn or Zn fertilizer increase wheat yield by 4%～8%. The response of wheat to Mn fertilizer is more than that to Zn. The order of magnititude of increased yield was expressed as MnZn>Mn>Zn>CK;The soi critical values of available Mn and Zn for wheat are 5 mg/kg and 0.4 mg/kg respectively. The application rate of Mn and Zn fertilizers are 15 kg/ha. Mn-immersed seeds of wheat or Mn application to soil both have the significant effect of yield increase. [WT5HZ〗更多还原