| The research are conducted from 2007 to 2008 at experimental farm of Shandong Agricultural University and the Qian Zhuliu village, Longkou City, Shandong Province. The researched materials are Jimai 20 (JM20) and Gaocheng 8901 (GC01), which are winter wheat varieties with strong gluten. In whole growing period, setting irrigation treatments: irrigation 3 times (Before winter, Jointing and Grouting), 2 times (Before winter and Jointing), 1 time (Jointing) and non-irrigation (W0), and setting irrigation methods: the Traditional irrigation and Alternative irrigation. Under different irrigation times, the effects of alternate irrigation on wheat grain yield, quality, water use efficiency and accumulation of soil NO3--N are studied. The main results are shown as follows:1 The effects of alternate irrigation on grain yieldWith increasing times of irrigation, the grain yield of alternating irrigation treatments present the trend of increase on JM20 and GC01 in the two areas. But with increasing times of irrigation the grain yields of traditional irrigation treatments present the trend of first increase then decrease on JM20 and GC01 in the two areas, and the highest grain yield treatment is T2. Under the condition of 1,2,3 irrigation in the whole growing period, respectively, the grain yield of the alternating irrigation is -1.92% ~ 9.65% less than that of the traditional irrigation; the highest grain yield of the alternating irrigation is -0.33% 1.44% less than the highest grain yield of traditional irrigation.2 The effects of alternating irrigation on grain qualityGrain protein content is "V"-shaped trend in the process of wheat grain formation and filling. Grain protein content of non-irrigation treatment is significantly higher than other irrigation treatments. Grain protein content of traditional irrigation decrease significantly with the increasing times of irrigation; grain protein content of alternating irrigation A1 |
PDF Full Text Request