【摘要】 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N 55 g/株、P2O554 g/株、K2O 15 g/株;2年树龄骏枣N 110 g/株、P2O5108 g/株、K2O 30g/株;3年树龄骏枣N 220 g/株、P2O5216 g/株、K2O 60 g/株。更多还原

【Abstract】 Through the two years’,field experiment of 1 ~ 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∶ P 2 O 5 ∶ K 2 O 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- P 2 O 5 54 g- K 2 O 15 g / plant,N 110 g- P2O5 108 g- K2O 30 g / plant,and N 220 g- P 2 O 5 216 g- K 2 O 60 g / plant,respectively.更多还原