吕丽霞;张立新;高梅;李云飞;廖超英;王维;王锴;赵永桂;张林森;李丙智;韩明玉;

• 1:西北农林科技大学林学院
• 2:西北农林科技大学生命学院
• 3:西北农林科技大学资源环境学院
• 4:西北农林科技大学园艺学院

摘要(Abstract)：

【目的】为探索根际注射施肥在苹果生产中应用。【方法】以10 a生红富士/M26/基砧为试材,利用施肥枪注射施肥,研究了不同浓度注射液对注肥点0～60 cm土层土壤理化特性、土壤酶、果实产量及品质的影响。【结果】随注射液浓度增加,各土层土壤pH值减小,电导率、碱解氮、速效磷和速效钾含量增加,各养分含量均为中层(20～40 cm)>表层(0～20 cm)>底层(40～60 cm);转化酶逐渐增大,过氧化氢酶和脲酶活性以10%浓度最高,磷酸酶活性以5%浓度最高。注射液浓度与中层土壤转化酶活性和碱解氮、速效磷、速效钾及电导率呈正相关。果实产量和单果质量分别以15%和10%浓度最高(2者无差异),硬度、可溶性固形物分别在0～10%和0～15%内逐渐增加,可滴定酸含量在0～10%内逐渐减小。【结论】综合分析以10%注射液浓度较适宜。

关键词(KeyWords)： 苹果;注射施肥;土壤理化特性;土壤酶;产量和品质

Abstract:

Keywords:

基金项目(Foundation): 国家苹果产业技术体系(CARS-28);; 陕西省农业科技创新项目(2011NXC01-18);; 中国科学院“西部之光”人才支持项目(2060299-14);; 陕西省科技统筹创新工程计划项目重大科技难题苹果专项(2011KTZB02-02-05);; 农业部生态环境保护专项(2012-47)

作者(Authors): 吕丽霞;张立新;高梅;李云飞;廖超英;王维;王锴;赵永桂;张林森;李丙智;韩明玉;

DOI: 10.13925/j.cnki.gsxb.2012.05.012

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