土壤施用硒肥对猕猴桃含硒量、镉铅积累及品质的影响

doi:10.7506/spkx1002-6630-201613015

摘要/Abstract

摘要：

以“贵长”猕猴桃为实验材料，研究外源硒对猕猴桃硒含量、镉和铅积累和内在品质的影响。将亚硒酸钠按0.00、1.25、2.50、5.00、10.00、20.00 mg/kg的剂量分别添加于水、有机肥中进行土壤穴施。结果表明：硒肥添加于水、有机肥中均能增加猕猴桃硒含量，降低镉和铅的积累，改善猕猴桃果实品质；但硒肥添加于有机肥中效果更为显著。随着硒肥中硒含量的增加，猕猴桃果实中硒含量逐渐增加，镉和铅含量急剧降低。在1.25～10.00 mg/kg的亚硒酸钠施用含量范围内，猕猴桃果实VC、可溶性总糖、可溶性固形物、干物质和可滴定酸的含量得到显著改善。生产上推荐使用5.00～10.00 mg/kg的亚硒酸钠添加于有机肥中进行土壤穴施。

关键词: 猕猴桃, 有机肥, 富硒, 镉铅积累, 品质

Abstract:

The aim of the present study was to evaluate the effect of exogenous selenium (Se) on Se content, cadmium (Cd)
and lead (Pb) accumulation, and internal quality of the kiwifruit cultivar ‘Guichang’. The kiwifruit plants growing under
conventional conditions were supplied with sodium selenite at 0.00, 1.25, 2.50, 5.00, 10.00 or 20.00 mg/kg in irrigation water
and organic fertilizer, respectively, via soil deep-ditch fertilization. The results showed that the application of exogenous
Se in both irrigation water and organic fertilizer could increase Se content, decrease Cd and Pb accumulation, and improve
fruit quality in kiwifruits. Moreover, the supplement of sodium selenite was more effective in organic fertilizer than in irrigation
water. With increasing amount of Se supplement, Se content in kiwifruits gradually increased and Cd and Pb contents in kiwifruits
sharply decreased. At sodium selenite dose levels of 1.25–10.00 mg/kg, the contents of vitamin C, soluble sugar, soluble solid
and dry matter were increased, and titratable acid was decreased in kiwifruit. Sodium selenite in organic fertilizer at dose levels of
5.00–10.00 mg/kg was recommended for cultivation of the kiwifruit cultivar ‘Guichang’. These findings might have practical
implications for the development of selenium-enriched kiwifruits and remediation of soil heavy metal contamination.

Key words: kiwifruit, organic fertilizer, selenium-enriched, Cd and Pb accumulation, quality

中图分类号:

S663.4

龙友华，张承，吴小毛，李明，姚雪，邵双. 土壤施用硒肥对猕猴桃含硒量、镉铅积累及品质的影响[J]. 食品科学, doi: 10.7506/spkx1002-6630-201613015.

LONG Youhua, ZHANG Cheng, WU Xiaomao, LI Ming, YAO Xue, SHAO Shuang. Application of Se-Fertilizer Affects Selenium Content, Cadmium and Lead Accumulation and Fruit Quality in Kiwifruits[J]. FOOD SCIENCE, doi: 10.7506/spkx1002-6630-201613015.

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