دورية أكاديمية
Effects of Nitrogen Application on Biomass Accumulation, Remobilization, and Soil Water Contents in a Rainfed Wheat Field ; Wenxue Duan1,2, Zhenwen Yu1, Yongli Zhang1,*, Dong Wang1, Yu Shi1, Zhenzhu Xu3
| العنوان: | Effects of Nitrogen Application on Biomass Accumulation, Remobilization, and Soil Water Contents in a Rainfed Wheat Field ; Wenxue Duan1,2, Zhenwen Yu1, Yongli Zhang1,*, Dong Wang1, Yu Shi1, Zhenzhu Xu3 |
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| المؤلفون: | DUAN, Wenxue, Yu, Zhenwen, ZHANG, Yongli, WANG, Dong, SHİ, Yu, Xu, Zhenzhu |
| المصدر: | Volume: 19, Issue: 1 25-34 ; 1301-1111 ; Turkish Journal Of Field Crops |
| بيانات النشر: | Society of Fields Crop Science Tarla Bitkileri Bilimi Derneği |
| سنة النشر: | 2014 |
| المجموعة: | DergiPark Akademik (E-Journals) |
| مصطلحات موضوعية: | Dry matter accumulation,dry matter remobilization,grain yield,N application rate,rainfed winter wheat,soil water content |
| الوصف: | This study examined the effects of different levels of N fertilization on dry matter accumulation and remobilization, and soil water contents in a rainfed winter wheat field. The experiments were carried out during growth seasons in 2009 – 2012 in a hilly region in Shandong Province, China. The N rates applied were 0 (N0, the control), 90 (N1), 120 (N2), 150 (N3), 180 (N4), and 210 (N5) kg N ha1. Our results showed that N fertilization significantly increased dry matter accumulation and post-anthesis assimilates compared with controls. At anthesis, total above-ground biomass increased significantly with increasing N rate up to 150 kg ha1 and then leveled off in the 2009 – 2010 and 2011 – 2012 growth seasons. However, the biomass in the 2010 – 2011 growth season did not vary with different N rates. At maturity, the accumulation of dry matter in vegetative organs significantly increased with increasing N rate up to 150 kg ha1 and then leveled off in all growth seasons. Of all the treatments, N3 and N4 had relatively higher total above-ground biomass at maturity. In contrast, dry matter remobilization efficiency showed a declining trend under increasing N rate. The higher post-anthesis assimilates and the contribution of pre-anthesis assimilates to grains were obtained at N rates of 150 and 180 kg ha1 in all growth seasons. Soil water contents in 0 – 120, 0 – 100, and 40 – 160 cm soil layers during each growth season decreased significantly with increasing N rate up to 150 kg ha1. The maximum grain yields were obtained under N rate of 150 kg ha1 in all growth seasons, with the highest grain yield being 7160.8 kg ha1 in the 2011 – 2012 growth season. Our results suggested that N fertilization at 150 kg N ha1 was optimal for grain production via promoting above-ground biomass and soil water consumption in deep soil layers. These results should help provide guidance for N fertilization management for optimal and sustainable wheat production in the said region |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| العلاقة: | https://dergipark.org.tr/tr/download/article-file/158618Test; https://dergipark.org.tr/tr/pub/tjfc/issue/17120/179001Test |
| DOI: | 10.17557/tjfc.45522 |
| الإتاحة: | https://doi.org/10.17557/tjfc.45522Test https://dergipark.org.tr/tr/pub/tjfc/issue/17120/179001Test |
| رقم الانضمام: | edsbas.367ADCD5 |
| قاعدة البيانات: | BASE |
| DOI: | 10.17557/tjfc.45522 |
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