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| Effect of delyed irrigation in jointing stage and planting pattern on winter wheat yield and quality |
| HAN Huifang1, REN Yujie2, GAO Chao2, YAN Zhenxing2, LI Quanqi2 |
| 1.College of Agonomy, Shandong Agricultural University, Tai′an, Shandong 271018, China; 2.College of Water Conservancy & Civil Engineering, Shandong Agricultural University, Tai′an, Shandong 271018, China |
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Abstract In order to expore a planting pattern of winter wheat to achieve water contolling and quality increasing objectives in the North China Plain, effects of planting pattern on yeild and qulity of winter wheat were investigated under various irrigation condtions. The expriments were condcuted in 2012-2013 winter wheat growing season, two planting patterns were adopted,wide-precision planting pattern and conventional-cultivation planting pattern, and in each planting pattern, there were three irrigation schemes, namely that no irrigation in the whole growing season, irrigated 60 mm in jointing stage, and irrigated 60 mm in the 10th day after jointing stage. The results show that delayed irrigation in jointing stage leaded to an increased number of kernels per spike, wet gluten content and gluten index significantly. The wide-precision planting pattern increased the number of spikes substantially. The delayed irrigation in jointing stage considerably raised grain yield, protein yield, wet absorption, wet gluten content and dough stability time for the winter wheat in wide-precision planting pattern. In both of the planting patterns, irrigation significantly decreased protein content; however, The delayed irrigation in jointing stage significantly enhanced protein yield. The delayed irrigation in jointing stage significantly increased wet absorption, dough development time, and dough stability time in wide-precision planting pattern. In the condition of irrigated 60 mm during growing season, The delayed irrigation in jointing stage significantly improved winter wheat grain yield and quality in wide-precision planting pattern. These experiments can provide a theoretic evidence and technical support for water controlling and grain quality improvement of winter wheat in the North China Plain.
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Received: 11 August 2016
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