硝化抑制剂碧晶对灰枣产量和品质的影响

Effects of Nitrification Inhibitor Nitrapyrin( N^+) on the Yield and Quality of Jujube( Ziziphus jujube Mill. Cv. Hui Zao)

【目的】研究尿素中添加硝化抑制剂碧晶N+随水滴灌对灰枣生长以及品质的影响。【方法】以红枣为试材,设置添加浓度为纯氮量的0.3%的硝化抑制剂碧晶N+与不添加的处理,测定果园土壤中的NH4+-N含量与NO3--N含量,枣果产量与品质。【结果】土壤中的NH4+-N含量提高22.3%~32.8%,NO3--N含量降低12%~35.7%;枣吊坐果数、单株坐果数与单株产量分别提高了105%、95%与94%,可溶性固形物、糖和VC含量略有提高。【结论】添加硝化抑制剂碧晶可显著抑制土壤中的硝化作用,增加土壤中的铵态氮比例,延长氮肥肥效,增加红枣枣吊坐果数和单株坐果数,增加枣产量;提高果品中可溶性固形物、糖和VC含量及整齐度,增加枣果的商品性。

【Objectove】This study focuses on the effect of a nitrification inhibitor nitrapyrin to urea on the yield and quality of jujube. 【Method】The amount of N＋was added as 0. 3% of the total nitrogen applied. 【Result and Conclusion】Results showed that the addition of nitrification inhibitor N^＋inhibited nitrification,increased the content of ammonium nitrogen in soil by 22. 3% ~ 32. 8%,decreased the contents of NO3^-- N by 12% ~ 35. 7%,improved the quantity of jujube fruits per jujube deciduous spur,the amount of jujube fruits per plant,the yield of jujube fruits by 105%,95% and 94%; increased the uniformity and contents of soluble solids,sugar and Vc and raised the marketability of jujube fruits.