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| Effects of Manure Applications on Tomato Yields and Soil Nitrogen and Phosphorus Accumulation in a Greenhouse Production System |
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| KeyWord:recommended manure application; yield; greenhouse; soil; nitrogen and phosphorus accumulation; tomato |
| Author Name | Affiliation | | LI Chao | College of Resources and Environmental Sciences, Qingdao Agricultural University, Qingdao 266109, China | | YAN Zheng-juan | College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China | | ZHANG Jing-wei | College of Resources and Environmental Sciences, Qingdao Agricultural University, Qingdao 266109, China | | CHEN Qing | College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China | | LI Jun-liang | College of Resources and Environmental Sciences, Qingdao Agricultural University, Qingdao 266109, China |
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| Abstract: |
| Based on international strategies of manure applications, a two-year experiment was conducted in a greenhouse production system to investigate the effects of different strategies of manure application on tomato yield and soil nitrogen（N） and phosphorus（P） accumulation. The treatments included control treatment（SN）（the traditional farmers′ manure application）; P-based manure application（P）; P-based manure plus wheat straw application（P+S）; N-based manure application（N）. Compared to the control（SN） treatment, different strategies of manure application increased tomato fruit yields, with no significant differences among the different strategies. The apparent N surplus was 1123, 1048, 1039 kg N·hm-2, and the apparent P surplus 219, 249, 226 kg P·hm-2 for P, P+S and N treatments, respectively. In 0~180 cm soil depth, soil inorganic N increased by 497, 480, 440 kg N·hm-2, and soil Olsen-P content increased by 28.4, 34.7, 31.0 mg P·kg-1 in P, P+S and N treatments, respectively. The preliminary results show that the accumulations of N and P in soils were greater under P-based and P-based + S treatments than under N-based treatment during the two-year experiment period. |
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