[1]ZHANG Na,ZHANG Yongqiang,WU Niping,et al.Study on the Grain Filling Characteristic of Winter Wheat Under Different Amounts of Drip Irrigation[J].Research of Soil and Water Conservation,2015,22(05):271-275.
Copy
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
22
Number of periods:
2015 05
Page number:
271-275
Column:
Public date:
2015-10-28
- Title:
-
Study on the Grain Filling Characteristic of Winter Wheat Under Different Amounts of Drip Irrigation
- Author(s):
-
ZHANG Na, ZHANG Yongqiang, WU Niping, WU Peijie, CHENG Xuefeng, ZHANG Bo, XU Wenxiu
-
College of Agronomy, Xinjiang Agricultural University, Urumqi 830052, China
-
- Keywords:
-
drip irrigation; winter wheat; grain filling characteristic
- CLC:
-
S512.1+1;S311;S275.6
- DOI:
-
-
- Abstract:
-
In order to optimize the drip irrigation of winter wheat in Yi’ning County of Xinjiang Uygur Autonomous Region, three different amounts of drip irrigation such as 3 000 (treatment A, TA), 3 750 (treatment B, TB), 4 500 (treatment C, TC) m3/hm2 were conducted by using of randomized block experimental design in wheat growing seasons during the period from 2012 to 2013 and from 2013 to 2014, and the dynamics of grain filling were observed, which could be described well by Logistic equation. The result showed that the 1000-grain weights were 48.35 g, 50.27 g, and 52.17 g, respectively, over two years under different treatments. There were three phases during grain filling, namely grain-filling pyramid period (T1), grain-filling fast increase period (T2), and grain-filling slowly increase period (T3). The durations followed the sequence: T3 > T1 > T2, and the grain-filling rates were 1.25 mg/d, 1.92 mg/d and 0.54 mg/d, respectively. The contributions of biomass to grain were 12.68% in T1, 60.90% in T2, and 26.43% in T3, respectively. With the increase of drip irrigation, the duration of grain filling delayed 3~7 days, the mean grain filling rate decreased by 2.88%~16.79%. TB in wintering period had the higher average filling rate (1.21 mg/d), which was only 3.41% lower than TA, but 12.25% higher than TC, which did not only increased the days of grain filling but did not lead to late-maturing, but also saved 750 m3/hm2 of water than TC, and could be guidance for field production. Results from correlation and regression analysis methods indicated that there were significant or very significant correlations among the most parameters, and it could be seen that mean grain filling rate, biggest filling rate, the duration of grain filling, especially T2, T3 and the filling rate of their phases were significantly correlated to 1000-grain weight.