Reducing Chemical Fertilizer Application in Greenhouse Vegetable Cultivation under Different Residual Levels of Nutrient
文献类型: 外文期刊
作者: Zhou, Nannan 1 ; Chen, Yujiao 1 ; Wang, Jiajia 2 ; Yang, Wenbin 1 ; Wang, Ying 1 ;
作者机构: 1.Anhui Normal Univ, Collaborat Innovat Ctr Recovery & Reconstruct Degr, Sch Ecol & Environm, Minist Educ, Wuhu 241002, Peoples R China
2.Anhui Acad Agr Sci, Soil & Fertilizer Res Inst, Anhui Prov Key Lab Nutrient Recycling Resources &, Hefei 230031, Peoples R China
3.Anhui Normal Univ, Anhui Lab Mol Based Mat, Wuhu 241002, Peoples R China
关键词: residual nutrient; fertilizer reduction; stem lettuce; nutrient accumulation; nutrient recovery efficiency
期刊名称:AGRICULTURE-BASEL ( 影响因子:3.6; 五年影响因子:3.6 )
ISSN:
年卷期: 2023 年 13 卷 6 期
页码:
收录情况: SCI
摘要: Excessive chemical fertilizer application in greenhouse vegetable cultivation results in environmental risks and residual nutrients in the soil. Conventional plot experiments conducted in one field cannot recommend fertilizer reduction to farmers when the residual nutrient levels were various among different fields. In this study, nine plot experiments were simultaneously conducted in nine greenhouse fields where the soils could reflect different residual levels of nutrient, with two application rates (100 and 0%) for each nitrogen, phosphorus, and potassium fertilizer. The results showed that fertilizer reduction did not decrease vegetable yield when soil nitrate, Olsen-phosphorus, and exchangeable potassium were & GE;173.3, 45.8, and 93.1 mg kg(-1), respectively. However, no N treatment decreased vegetable yields in fields 1-3 because the inadequately residual nitrate (& LE;103.9 mg kg(-1)) in these fields led to low nitrate absorbed from sources other than chemical fertilizer, high recovery efficiencies of N, and high productivity of N absorbed from chemical fertilizer. Residual nitrate that soil EC could reflect was the limiting factor of yield under fertilizer reduction. This study indicated that reducing fertilizer in greenhouse vegetable cultivation should be based on the residual level of nutrients in the soil, which is meaningful in agricultural sustainability and environmental safety.
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