腐植酸叶面肥复配聚合氨基酸对番茄生长及品质的影响

Effects of Humic Acid Foliar Fertilizer Compounded with Polymeric Amino Acids on Growth and Quality of Tomato

通过盆栽试验,研究了聚谷氨酸、聚天门冬氨酸与腐植酸叶面肥复配对番茄生长的影响。结果显示:与单施腐植酸叶面肥相比,聚谷氨酸(PGA)、聚天门冬氨酸(PASP)与腐植酸复配(T1、T2)后分别可显著增大叶绿素相对含量(SPAD值)12.58%、13.16%,提高单果重3.12%、2.78%;均显著增加单株结果数17.95%,显著降低硝酸盐含量4.56%;促进氮磷钾及微量元素的利用。三者复配(T3)效果最优,较T1、T2分别增大SPAD值0.97%、0.46%,提高单果重2.38%、2.86%,显著增加Vc含量20.65%、14.47%;均显著增加单株结果数17.95%,显著降低硝酸盐含量13.11%;并显著促进土壤NO_(3)^(-)-N的利用。

Effects of polyglutamic acid(PGA),polyaspartic acid(PASP)and humic acid foliar fertilizer on the growth of tomato were studied by pot experiments.The results showed that compared with the single application of humic acid foliar fertilizer,PGA,PASP and humic acid foliar fertilizer(T1,T2)could significantly increase the SPAD value by 12.58%and 13.16%,the single fruit weight by 3.12%and 2.78%,respectively.The number of fruits per plant significantly increased by 17.95%,while the nitrate content significantly reduced by 4.56%.The utilization of nitrogen,phosphorus,potassium and trace elements were promoted.Compared with T1 and T2,T3 was the favorite one,that could increase the SPAD value by 0.97%and 0.46%,the single fruit weight by 2.38%and 2.86%,and significantly increased the Vc content by 20.65%and 14.47%,respectively.The number of fruits per plant significantly increased by 17.95%,while the nitrate content significantly reduced by 13.11%and the use of soil NO_(3)^(-)-N was significantly promoted.