郑寿龙

摘 要：在柑橘上进行了不同有机无机肥配施试验，研究不同有机氮和无机氮配比对柑橘产量、品质及养分吸收的影响。结果表明：有机无机肥配施处理提高了柑橘大果的比例，降低了小果的比例，并提高了柑橘的Vc、总糖、可溶性固形物含量，促进了植株对钾素的吸收，从而改善了果实品质。其中40%有机氮替代40%无机氮处理，柑橘产量增加4000.5kg/hm2，增幅8.3%，是提高柑橘综合品质的最佳施肥处理。

关键词：柑橘；有机肥；产量；品质；养分吸收

中图分类号 S147；S666 文献标识码 A 文章编号 1007-7731（2018）12-0046-2

Effects of Organic Manure Application on Yield，Quality and Nutrient Absorption of Citrus

Zheng Shoulong

（Tangqian Township Agricultural Technique Extension Station of Yongtai County，Yongtai 350717，China）

Abstract： Effects of different organic nitrogen and inorganic nitrogen ratio on citrus yield，quality and nutrient absorption were studied on citrus with different organic and inorganic fertilizers. The results showed that the application of organic and inorganic fertilizer can improve the proportion of big fruit，reduce the proportion of small fruit，increase the content of Vc，total sugar and soluble solids in citrus，promote the absorption of plant to potassium，and improve the fruit quality directly. After 40% organic nitrogen substituted for 40% inorganic nitrogen，the yield of citrus could be increased by 4000.5kg/hm2，the increase was 8.3%，and 40% organic nitrogen substituted 40% inorganic nitrogen treatment for improving the comprehensive quality of citrus.

Key words： Citrus；Organic fertilizer；Yield；Quality；Nutrient uptake

有機肥可以活化土壤中潜在的养分功能，作为基肥施用可以减少速效养分的淋失[1]。目前，大部分柑橘园施肥状况均是长期施用单一品种肥料，忽视了有机肥的施用，导致柑橘园有机质降低、矿质养分供应不平衡，柑橘产量和品质下降等问题的出现。有机和无机肥料配施结合了化肥和有机肥二者之长，对于提高土地生产力和改善土壤性状均可起明显的作用[2]。本试验研究了不同有机无机肥配比对柑橘产量、品质以及养分吸收的影响，探讨施用有机肥对柑橘养分与果实品质的改善作用，为柑橘的合理施肥提供科学依据。

1 材料与方法

1.1 试验材料 试验设在永泰县塘前乡荣柚富家庭农场。供试土壤基本性状如下：pH4.81，有机质23.7g/kg、速效N169.5mg/kg、速效P177.89mg/kg、速效K189.1mg/kg。供试柑橘品种为芦柑。供试肥料为市售生物有机肥（有机质≥45%，N+P2O5+K2O≥6%）及柑橘专用BB肥（19-8-13）。

1.2 试验设计 试验设4个处理，3次重复，每小区3株树，株行距3.65m，采用随机区组排列。……