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- W2427189743 abstract "Field experiments were conducted during 2012-2014 winter wheat growing seasons. Six irrigation treatments were designed: rainfed, W0; a local irrigation practice that irrigated at jointing and anthesis with 60 mm each time, W1; four irrigation treatments were designed with target relative soil moisture of 65% field capacity (FC) at jointing and 70% FC at anthesis in 0-20 (W2) 0-40 (W3), 0-60 (W4) , and 0-140 cm (W5) soil layers, respectively, to study the effects of supplemental irrigation by measuring moisture content in different soil layers on water consumption characteristics and photosynthesis and grain yield of winter wheat. The irrigation amounts at jointing in W1 and W4 were the highest, followed by W3 treatment, W2 and W5 were the lowest. The irrigation amounts at anthesis and total irrigation amounts were ranked as W5 > Wl, W4 > W3 > W2, the total water consumption in W3 was higher than that in W2, but had no difference with that in W1, W4 and W5 treatments, W3 had the higher soil water consumption than W1, W4 and W5 treatments, and the soil water consumption in 40-140 cm soil layers from jointing to anthesis and in 60-140 cm soil layers from anthesis to maturity in W3 were significantly higher than the other treatments. The photosynthetic rate, transpiration rate and water use efficiency of flag leaf at middle stage of grain filling from the W3 treatment were the highest, followed by the W1 and W4 treatments, and W0 treatment was the lowest. In the two growing seasons, the grain yield and water use efficiency in the W3 were 9077-9260 kg · hm(-2) and 20.7-20.9 kg · hm(-2) · mm(-1), respectively, which were higher than those from the other treatments, and the irrigation water productivity in the W3 was the highest. As far as high-yield and high-water use efficiency were concerned in this experiment, the most appropriate soil layer for measuring moisture content was 0-40 cm." @default.
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- W2427189743 date "2015-08-01" @default.
- W2427189743 modified "2023-09-23" @default.
- W2427189743 title "[Effects of supplemental irrigation by measuring moisture content in different soil layers on water consumption characteristics, photosynthesis and grain yield of winter wheat]." @default.
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