| 摘要: |
| 【目的】探讨黑液腐殖酸液体肥料(Humic acid liquid fertilizer，HALF)对棉花生长及土壤性质的影响，为其在棉花生产中的应用提供参考依据。【方法】通过网室 盆栽试验，以不施肥(CK)为对照，研究施用A型、B型和C型3种HALF肥料(HALF-A、HALF-B、HALF-C)，N、P、K配施(NPK处理)以及N、P、K与HALF-C配施对棉花地上部干物质积累、养分吸收和土壤养分含量等的影响。【结果】与NPK处理相比，施用HALF肥料能使棉花地上部干物质积累量提高10.0%～65.8%，其中以HALF-C与NPK配合施用处理棉花生长最好。与NPK处理相比，施用HALF和HALF-C+NPK肥料使棉花地上部氮吸收量增加24.3%～101.4%，磷吸收量增加58.3%～100%，钾吸收量增加10.1%～56.2%，但3种HALF肥料效应不同。施用合适的HALF肥料能显著降低土壤pH 0.06～0.11，提高土壤有机质和土壤速效养分含量。【结论】3种HALF肥料均能促进棉花生长，提高土壤养分含量，其中以HALF C应用效果最好。 |
| 关键词: 腐殖酸液体肥料 黑液 棉花 养分吸收 |
| DOI： |
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| 基金项目:国家高技术研究发展计划(“863”计划)项目(2012AA100604-6)；国家自然科学基金项目(41171247)；国家科技支撑计划项目(2011BAD29B06) |
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| Effects of black liquor humic acid liquid fertilizer on cotton growth and physicochemical properties of soil |
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HU Mingfang, TIAN Changyan, WANG Ping,et al
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Chinese Academy of Sciences
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| Abstract: |
| 【Objective】This study aimed to investigate the effects of black liquor humic acid liquid fertilizer (HALF) on cotton growth and soil properties.【Method】Pot experiments in screen house were carried out to investigate the effects of three black liquor humic acid fertilizers (HALF-A,HALF-B,and HALF-C),N,P,K fertilizer (NPK treatment),combination of N,P,K fertilizer with HALF-C,and without fertilizer (CK) on cotton dry matter accumulation aboveground,nutrient uptake and soil fertility of cotton.【Result】Compared with NPK fertilizer,application of HALF fertilizers increased dry matter accumulation aboveground of cotton by 10.0%-65.8%,and combination of NPK and HALF-C was the best.Compared with NPK fertilizer,application of HALF and HALF-C+NPK fertilizer significantly increased N uptake,P uptake,and K uptake in aboveground part of cotton by 24.3%-101.4%,58.3%-100%,and 10.1%-56.2%,respectively.However,the effects of HALF fertilizers were different. Application of HALF fertilizers significantly reduced soil pH by 0.06-0.11,while increased organic matter and available nutrients in soil.【Conclusion】HALF fertilizers promoted the growth of cotton and improved the soil available nutrients.HALF-C fertilizer was the best. |
| Key words: humic acid liquid fertilizer(HALF) black liquor cotton nutrient uptake |
