多肽在凯特芒果上的应用效果

Application of Polypeptides in Kiett Mango

以9龄生凯特芒果树为试材,施用不同浓度(常规施肥+多肽500倍液、常规施肥+多肽1000倍液、常规施肥+多肽1500倍液、常规施肥+1000倍多肽叶喷施、常规施肥+清水对照)的多肽,研究其对芒果吸收部分矿质营养和品质的影响。结果表明:多肽能促进芒果果实吸收N、P、K素营养和改善果实品质。施用多肽500倍液,果实中N、P、K素营养含量分别比对照高12.1%、34.7%、17.2%,可滴定酸降低44.3%,可溶性总糖提高24.6%,抗坏血酸提高59.5%。

Trees of mango cultivar ＇Kiett＇ at age of 9 were used as materials and treated with polypeptides at different levels, combined with conventional fertilizer application, to analyze the effect of the polypeptides on the absorption of some mineral nutrients and the quality of their fruit. A random block design was arranged with 5 treatments and 3 replications, and each treatment contained 5 trees each block grown similarly on the same type of soil, with a total of 75 trees in all the treatments. The mango trees were treated （foliar spray and root irrigation） twice at an interval of 10 days during and after the flower stage. The treatments included conventional fertilizer application ＋ polypeptide （1：500, folidr spray and root flood）, conventional fertilizer application ＋ polypeptides （1：1 000, foliar spray and root flood） , conventional fertilizer application ＋ polypeptides （1：1 500, foliar spray and root flood） , conventional fertilizer application ＋ polypeptides （1：1 000, foliar spray） , and the blank control （conventional fertilizer application ＋ water spray. The results showed that polypeptides treatments promoted the uptake of N, P and K nutrients and the quality of the mango fruit, and that treatment with 1：500 solution of polypeptides increased fruit N, P and K contents by 12.1%, 34.7% and 17.2% separately, reduced the titrate acid in the fruit by 44.1%, improved the soluble total sugar by 24.6% and anti-aseorbic acid by 59.5%.