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- Title
EFFECT OF DIFFERENT SOWING METHODS AND NITROGEN RATES ON YIELD AND QUALITY OF WINTER WHEAT IN LOESS PLATEAU OF CHINA.
- Authors
NOOR, H.; KHAN, S.; SUN, M.; YU, S.; REN, A.; YANG, Z.; HOU, F.; LI, L.; WANG, Q.; GAO, Z.
- Abstract
In order to explore the optimum amount of nitrogen application in different sowing methods of winter wheat, a field experiment was conducted at Wenxi experimental site of Shanxi Agriculture University (2017-2018), The two sowing methods were (I) Wide Space Sowing (WSS), and (II) Drilling Sowing (DS) with seven nitrogen treatments: 0 kg.hm 90 kg·hm-2, 180 kg·hm-2, 210 kg hm-2, 240 kg hm- 2, 270 kg hm-2 and 300 kg hm-2. (WSS) significantly increased the number of spikes yield and number of kernels per spike, nitrogen rate which ultimately increased the yield. The yield was the highest at 240 kg·hm-2 and 210 kg·hm-2, respectively. Nitrogen application significantly increased the Net Photosynthesis Rate (Pn), intercellular carbon dioxide concentration (Ci) and transpiration rate (Tr) and decreased the stomatal conductance (Gs) of post-anthesis flag leaves. Wide space sowing wheat with N240 was the best. Compared with other nitrogen application rates, (WSS) with the nitrogen of 240 kg· hm-2 increased nitrogen accumulation in all growth stage while nitrogen uptake efficiency, nitrogen use efficiency and nitrogen productive efficiency were the highest at 90 kg·hm-2 and lowest at 300 kg·hm-2. The accumulation of soluble sugar in the middle and late stages increased and the sucrose content and starch content increased in each period after anthesis. The content of each protein component increased the albumin which was the highest at 240 kg·hm-2 and the globulin was the highest at 270 kg·hm-2. The prolamin and glutenin (storage protein) were the highest at 300 kg·hm-2 and in 240 kg·hm-2. The protein content at 300 kg·hm-2, and protein yield at 240 kg·hm-2 were significantly improved compared to other nitrogen application rates. The sedimentation value, falling value, formation time, development time, wet gluten and the gluten index increased and the water absorption rate was relatively stable as nitrogen fertilizer increased.
- Subjects
CHINA; PLATEAUS; WINTER wheat; NITROGEN fertilizers; PHOTOSYNTHETIC rates; NITROGEN
- Publication
Applied Ecology & Environmental Research, 2020, Vol 18, Issue 4, p5701
- ISSN
1589-1623
- Publication type
Article
- DOI
10.15666/aeer/1804_57015726