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Chinese Agricultural Science Bulletin ›› 2019, Vol. 35 ›› Issue (4): 7-14.doi: 10.11924/j.issn.1000-6850.casb17100050

Special Issue: 园艺

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Fertilization Modes Affect Soil Nitrogen Loss in Tomato-Cucumber Rotation System and Vegetable Yield

  

  • Received:2017-10-16 Revised:2017-12-20 Accepted:2017-12-25 Online:2019-01-31 Published:2019-01-31

Abstract: Excessive fertilization can cause soil quality decline and serious environmental problems in China. The objectives of this study are to ascertain the effects of different fertilization practices on soil nutrient leaching loss and vegetable yield, and provide a basis for rational fertilization system. A 3- year field experiment was established from 2013 to 2015 in a tomato- cucumber rotation system. Five fertilization treatments, including conventional fertilization (CF), reducing fertilizer application (OF), reducing fertilizer application with straw (OFM), manure (M), and none fertilizer application (CK), were set. The amount and coefficient of soil nutrient leaching loss were determined and the vegetable yields were investigated. The amount of soil total nutrient leaching loss was the greatest in CF, and increased by 87.6-141.8 kg/hm2 when compared with the control. The vegetable total yields increased by 13.9%-130.6% under different fertilizer treatments, and were greater in CF and OFM compared with that of the control. The vegetable yield was restricted by the leaching loss of soil total nutrient, nitric nitrogen in CF, and was restricted by the leaching loss of soil nitric nitrogen in OFM. The mode of reducing fertilizer application with straw could reduce soil nutrient leaching loss and increase nutrients availability to the crop, which is the optimal fertilization scheme in the study area.