Yield loss compensation effect and water use efficiency of widely and precisely sowed winter wheat covered under corn stalks
Liu Xinhui1, Bian Chengyue1, Ma Changjian1, Liu Quanru1, Wei Chunzhi2, Li Quanqi1
1.Water Conservancy and Civil Engineering College, Shandong Agricultural University, Taian, Shandong 271018, China; 2.Farm Bureau of Juye County, Juye, Shandong 274900, China
Abstract:To develop water-saving agriculture in Shandong province, North China, a series of field experiments are conducted with two sowing patterns(wide and precise sowing pattern and conventional-cultivation pattern)and two corn stalks mulching modes(0 and 0.6 kg/m2)to study dynamic change in wheat plants, water consumption and water use efficiency(WUE)in various growth stages as well as grain yield. The results show that corn mulch can significantly reduce water consumption but both number of spikes and 1000-grain mass decrease significantly, causing a substantially reduced wheat yield. Under corn stalks mulch conditions, the wide and precise sowing pattern not only can compensate the grain yield loss by increasing number of spikes significantly, but also can lower the water consumption greatly compared with the conventional-cultivation pattern. Therefore, WUE is much higher in wide and precise sowing pattern than in conventional-cultivation pattern. The study indicates that the wide and precise sowing pattern combined with corn stalks mulch is a sound measure to improve WUE of winter wheat in Shandong province, North China.
刘馨惠, 卞城月, 马长健, 刘泉汝, 魏春芝, 李全起. 玉米秸秆覆盖下宽幅精播冬小麦产量损失补偿效应及水分利用效率[J]. 排灌机械工程学报, 2015, 33(9): 811-817.
Liu Xinhui, Bian Chengyue, Ma Changjian, Liu Quanru, Wei Chunzhi, Li Quanqi. Yield loss compensation effect and water use efficiency of widely and precisely sowed winter wheat covered under corn stalks. Journal of Drainage and Irrigation Machinery Engin, 2015, 33(9): 811-817.
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