不同形式的联合应用对基质营养利用,根微环境和番茄产量的影响
Shuyan Jiang1, Jianhong Sun1, Ning Jin1
1College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China.
Microorganisms
|January 28, 2026
概括
番茄的最佳战略涉及25%的氨 (AN) 和75%的胺 (UN) 混合物. 这种组合显著提高了产量和营养吸收,改善了树根球微环境,以获得更好的番茄生产.
科学领域:
- 园艺科学 园艺科学
- 植物营养 植物营养
- 土壤微生物学 土壤微生物学
背景情况:
- 设施番茄生产中过度的氨 (NH4+-N) 导致根酸和营养不平衡.
- 胺 (尿素-N) 提供缓冲,但具有利用滞后,需要优化应用策略.
- 关于不同源在番茄生长阶段的综合作用的研究有限.
研究的目的:
- 研究不同氨 (AN) 和胺 (UN) 比例对番茄生长,产量和营养积累的影响.
- 确定最佳的AN-UN比率,以提高番茄产量和树根球的健康.
- 在受控环境中为精确的管理提供科学基础.
主要方法:
- 番茄植物 ("Jingfan 502") 在受控条件下生长,总度为15 mM.
- 应用了六种治疗方法:CK (0% AN, 0% UN),T1 (100% AN, 0% UN),T2 (0% AN, 100% UN),T3 (25% AN, 75% UN),T4 (50% AN, 50% UN) 和T5 (75% AN, 25% UN).这些治疗方法包括:CK (0% AN, 0% UN),T1 (100% AN, 0% UN),T2 (0% AN, 100% UN),T3 (25% AN, 75% UN),T4 (50% AN, 50% UN) 和T5 (75% AN, 25% UN).
- 使用冗余分析 (RDA) 分析了植物产量,营养含量 (N,P,K,Mg),吸收率,电导率 (EC) 和树根球微生物群体组成.
主要成果:
- 与T1和T2相比,T3处理 (25%AN + 75%UN) 显著增加了单一植物产量,分别为64.04%和5.10%.
- 总N,P,K和Mg积累在T3中分别增加了29.0%和20.7%,相比T1和T2.
- T3的肥吸收率更高,电导率 (EC) 增加,表明营养素可用性和微生物活性有所提高.
- RDA发现T3和T4治疗对酶活动和微生物群落产生了积极的影响,与总N和EC相关,优化了树根球.
结论:
- 25%的氨和75%的胺 (T3) 的应用比率是控制条件下的番茄生产的最佳.
- 这种特定的化合物增强了植物的产量,营养吸收,并促进了有利的树根球微环境.
- 这些发现支持精确的管理策略,以改善设施环境中的番茄种植.
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