品种与氮肥形态对花生叶片铁含量和SPAD值及产量的影响

为探讨品种与氮肥形态对花生叶片活性铁含量和SPAD值及荚果产量的影响,选择远杂9102和驻花1号两个品种为主处理,以全部施用铵态氮肥、铵态氮肥与硝态氮肥各半、全部硝态氮肥为副处理的裂区设计进行田间试验。结果表明,远杂9102和驻花1号均以铵态氮肥与硝态氮肥各半处理的产量最高,但远杂9102的产量显著高于驻花1号,提高8.2%。在花针期、结荚期随着铵态氮肥比例的增加,远杂9102叶片活性铁含量均呈降低趋势,而驻花1号叶片活性铁含量在花针期和结荚期均呈增加趋势;新叶SPAD值均呈增加趋势。综合分析,以远杂9102品种和铵态氮肥与硝态氮肥各半组合的花生产量最高。

Effects of cultivars and nitrogen forms on active iron content,SPAD values of young leaves and yield in peanut

A field experiment was conducted to study the effects of nitrogen (N) forms on active iron,SPAD values of young leaves and pod yield in Yuanza 9102 and Zhuhua 1 peanut cultivars(main treatment),the experiment was laid out in a split plot experiment design with 100% ammonium N fertilizer,50% ammonium N fertilizer /50% nitrate N fertilizer and 100% nitrate N fertilizer,respectively(secondary treatment).The results showed that,the pod yield 50% NH+4 N/50% NO-3 N fertilizers treatment of both yuanza 9102 and Zhuhua 1 were the highest,but the yield of yuanza 9102 was significantly higher than Zhuhua 1.In flowering pegging stage and pod setting stage,with ammonium proportion increased,active iron content in yuanza 9102 leaves were decreased,while which of Zhuhua 1 were increased;SPAD values of new leaves were all increased.In summary,the pod yield of Yuan za 9102 peanut cultivar applied by 50% NO-3 N/50% NH+4 N fertilizers treatment was the highest.