浙江农业科学 ›› 2026, Vol. 67 ›› Issue (10): 2521-2524.DOI: 10.16178/j.issn.0528-9017.20250498

• 资源与环境 • 上一篇    下一篇

浙江省有机肥料种子发芽指数及其影响因素研究

颜军(), 陈思力, 傅恩诚, 蔡玮, 沈月   

  1. 浙江省耕地质量与肥料管理总站,浙江 杭州 310020
  • 收稿日期:2025-07-14 出版日期:2026-10-11 发布日期:2026-10-19
  • 作者简介:颜军,主要从事土壤肥料检测和技术推广工作。E-mail:328109893@qq.com。

Study on the seed germination index of organic fertilizers and its influencing factors in Zhejiang Province

YAN Jun(), CHEN Sili, FU Encheng, CAI Wei, SHEN Yue   

  1. Cultivated Land Quality and Fertilizer Management Station of Zhejiang Province,Hangzhou 310020,Zhejiang
  • Received:2025-07-14 Online:2026-10-11 Published:2026-10-19

摘要:

以浙江省不同地区60个有机肥料产品为对象,调查了电导率(EC)和养分含量对种子发芽指数(GI)的影响。结果显示,供试样品中GI不合格率较高。电导率升高会降低GI合格率,当EC低于5 mS·cm-1时,GI合格率达最高值100%。有机肥料中的高含量氮和钾对GI影响较为明显,当总氮含量在1.22%~<3.00%、总磷含量在2.00%~<3.00%、总钾含量在1.18%~<3.00%时,GI合格率和GI平均值均较高。滤纸数量对种子发芽率和GI影响不大,而5 mL浸提液则更适合用于NY/T 525—2021《有机肥料》中GI的测定。本研究表明,降低浸提液EC、合理调整养分配比、减少浸提液体积,均可有效提高GI。

关键词: 有机肥料, 种子发芽指数, 电导率, 养分含量, 浸提液体积

Abstract:

This study investigated the effects of electrical conductivity(EC)and nutrient content on the seed germination index(GI)of 60 organic fertilizer products collected from different regions of Zhejiang Province. The results showed that the GI non-conformance rate of the tested organic fertilizers was high. Elevated EC levels reduced GI pass rates,with the highest GI pass rate(100%)achieved when EC was below 5 mS·cm-1. High nitrogen and high potassium contents markedly affected GI,and the optimal GI pass rates and mean GI values were observed when total nitrogen content ranged from 1.22% to <3.00%,total phosphorus content from 2.00% to <3.00%,and total potassium content from 1.18% to <3.00%. The number of filter paper discs had little impact on seed germination rate and GI,whereas 5 mL of extraction solution was more suitable for GI determination in the NY/T 525-2021 Organic Fertilizers standard. The study demonstrates that reducing the EC of the extraction solution,optimizing the nutrient ratios,and decreasing the extraction solution volume can effectively increase GI.

Key words: organic fertilizer, seed germination index, electrical conductivity, nutrient content, extraction solution volume

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