不同氮磷钾配比追肥对幼龄骏枣生长及其产量和品质的影响

Effect of different topdressing NPK ratios on Junzao tree's growth,jujube fruit yield and quality

采用田间试验方法，连续两年对1—3年树龄的幼龄骏枣开展研究，探讨氮磷钾肥对不同树龄骏枣幼树的生长和结果的影响。结果表明：（1）适量的氮磷钾施肥水平可以促进幼龄骏枣的生长，提高枣果产量和品质，但施用过量将会产生肥害；（2）与本试验土壤肥力相似的土壤中，氮磷钾的适宜配比为3．7：3．6：1，即1年生幼龄骏枣的适宜施肥量为N55g／株、P2O5 54g／株、K2O15g/株；2年树龄骏枣N110g/株、P2O5 108g/株、K2O 30g／株；3年树龄骏枣N220g/株、P2O5 216g／株、K2O 60g/株。

Through the two years＇, field experiment of I - 3 years old young Zizyphus Jujuba ＇ Junzao＇ trees, the effect of topdressing with different NPK ratios on growth and fruiting of young ＇ Junzao＇ tree was studied. The results indicated that： （ 1 ） The right amount of NPK fertilization could promote the growth of ＇ Junzao＇ and improve fruit yield and quality, but the excess NPK application will have fertilizer damage on jujube fruit yield and quality. （2） The recommendations fertilization amount in 1 -3 years old ＇ Junzao＇ yard in this experiment was the N： P2O5：K2O ratio of 3.7： 3.6：1 ; The suitable NPK fertilization rate of 1-year-old ＇ Junzao＇ tree, 2-year-old ＇ Junzao＇ tree and 3-year-old ＇ Junzao＇ tree were N 55 g - P2O5 54 g - K2O 15 g/plant, N 110 g - P2O5 108 g - K2O 30 g/plant, and N 220 g - P2O5 216 g - K2O 60 g/plant, respectively.