【摘要】 试验以番茄品种西贝2号为材料,设置不追肥(CK)和苗期、开花期和坐果期追施尿素(T1)或腐植酸水溶肥(T2)3个处理,研究不同施肥处理对番茄株高、产量、氮肥偏生产力及种植效益的影响。结果表明:与CK相比,追施尿素和腐植酸水溶肥均能显著提高番茄株高、产量、单果重和单株果重;T2处理的番茄产量、单株果重、单果重分别比T1处理增加6.95%、10.14%和3.75%(P<0.05),产量提高主要体现在单果重的增加,单株果数之间无显著性差异。与追施尿素相比,追施腐植酸水溶肥可显著提高设施番茄的氮肥偏生产力和经济效益,T2处理氮肥偏生产力比T1增加25.51%,产值、纯收益分别比T1增加6.95%、8.00%,产投比无明显差异。综上,与不追肥及追施尿素相比,苗期、开花期和坐果期追施腐植酸水溶肥可实现番茄产量和效益协同提高。更多还原

【Abstract】 The experiment was aimed to clarify the effects of topdressing humic acid water-soluble fertilizer on yield and economic benefit of tomato. The variety Xibei 2 was used as experimental material. Three fertilization treatments including conventional fertilization(CK), topdressing urea(T1) and topdressing humic acid water-soluble fertilizer(T2) in the seedling, flowering and fruit bearing periods were set under the plastic greenhouse conditions with the normal management. The plant height, nitrogen partial factor productivity(NPFP), yield and economic benefit of tomato were investigated. The results showed that topdressing urea and humic acid water-soluble fertilizer could significantly increase tomato plant height, yield, single fruit weight and fruit weight per plant compared with CK. The tomato yield, fruit weight per plant and single fruit weight under T2 treatment significantly increased by 6.95%, 10.14% and 3.75%(P<0.05) compared with T1 treatment. The yield increase was mainly reflected on the increase of single fruit weight, and there was no significant difference in the number of fruits per plant. Compared with T1 treatment, T2 treatment could significantly improve the NPFP and economic benefit of tomato, and the NPFP, output value and net benefit increased by 25.51%, 6.95% and 8.00% respectively compared with T1 treatment. But there was no significant difference in the ratio of output to input between them. Thus, it would be an efficient strategy to achieve synergistic promotion of both tomato yield and economic benefit through topdressing humic acid water-soluble fertilizer in the seedling, flowering and fruit setting periods.更多还原