دورية أكاديمية
Modeling nitrogen and water management effects in a wheat-maize double-cropping system.
| العنوان: | Modeling nitrogen and water management effects in a wheat-maize double-cropping system. |
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| المؤلفون: | Fang Q; Agronomy College, Qingdao Agricultural Univ., Qingdao, Shandong, China., Ma L, Yu Q, Malone RW, Saseendran SA, Ahuja LR |
| المصدر: | Journal of environmental quality [J Environ Qual] 2008 Oct 23; Vol. 37 (6), pp. 2232-42. Date of Electronic Publication: 2008 Oct 23 (Print Publication: 2008). |
| نوع المنشور: | Journal Article; Research Support, Non-U.S. Gov't |
| اللغة: | English |
| بيانات الدورية: | Publisher: Wiley Country of Publication: United States NLM ID: 0330666 Publication Model: Electronic-Print Cited Medium: Print ISSN: 0047-2425 (Print) Linking ISSN: 00472425 NLM ISO Abbreviation: J Environ Qual Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: 2020- : [Hoboken, NJ] : Wiley Original Publication: Madison, WI : Published cooperatively by American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America |
| مواضيع طبية MeSH: | Nitrogen* , Water Supply*, Agriculture/*methods , Triticum/*physiology , Zea mays/*physiology, Conservation of Natural Resources ; Models, Theoretical ; Time Factors |
| مستخلص: | Excessive N and water use in agriculture causes environmental degradation and can potentially jeopardize the sustainability of the system. A field study was conducted from 2000 to 2002 to study the effects of four N treatments (0, 100, 200, and 300 kg N ha(-1) per crop) on a wheat (Triticum aestivum L.) and maize (Zea mays L.) double cropping system under 70 +/- 15% field capacity in the North China Plain (NCP). The root zone water quality model (RZWQM), with the crop estimation through resource and environment synthesis (CERES) plant growth modules incorporated, was evaluated for its simulation of crop production, soil water, and N leaching in the double cropping system. Soil water content, biomass, and grain yield were better simulated with normalized root mean square errors (NRMSE, RMSE divided by mean observed value) from 0.11 to 0.15 than soil NO(3)-N and plant N uptake that had NRMSE from 0.19 to 0.43 across these treatments. The long-term simulation with historical weather data showed that, at 200 kg N ha(-1) per crop application rate, auto-irrigation triggered at 50% of the field capacity and recharged to 60% field capacity in the 0- to 50-cm soil profile were adequate for obtaining acceptable yield levels in this intensified double cropping system. Results also showed potential savings of more than 30% of the current N application rates per crop from 300 to 200 kg N ha(-1), which could reduce about 60% of the N leaching without compromising crop yields. |
| المشرفين على المادة: | N762921K75 (Nitrogen) |
| تواريخ الأحداث: | Date Created: 20081025 Date Completed: 20090122 Latest Revision: 20131121 |
| رمز التحديث: | 20231215 |
| DOI: | 10.2134/jeq2007.0601 |
| PMID: | 18948476 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 0047-2425 |
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| DOI: | 10.2134/jeq2007.0601 |