| Cite this article: | 柳斌辉,王变银,陈朝阳,等.春一水灌溉时间对冬小麦产量和生长特性的影响[J].灌溉排水学报,,():-. |
| LIU Binhui,WANG Bianyin,CHEN Zhaoyang,et al.春一水灌溉时间对冬小麦产量和生长特性的影响[J].灌溉排水学报,,():-. |
|
| |
|
|
| This article has been：Browse 948Times Download 0Times |
|
|
|
| DOI： |
|
| Effect of Time of Once Irrigation in Spring on Yield and Growth Characteristics of Winter Wheat |
|
LIU Binhui1,2,3, WANG Bianyin1,2,3, CHEN Zhaoyang1,2,3, ZHANG Wenying4
|
|
1.Dryland Farming Institute,Hebei Academy of Agriculture and Forestry Sciences;2.Key Lab of Crops Drought Resistance Reasearch of Hebei Province;3.China;4.Dryland Farming Institute，Hebei Academy of Agriculture and Forestry Sciences
|
| Abstract: |
| 【Objective】Exploring the best spring one-water irrigation time in the Haihe Plain and exploring the yield potential of winter wheat under water-saving irrigation systems.【Method】Through a field plot experiment, five spring one-water irrigation time treatments (March 15, a1; March 20, a2; March 25, a3; March 30, a4; April 4, a5) and one control treatment (spring two-water irrigation) were set up with the winter wheat "Heng 0628" as the research object, and analyzed the effects of different treatments on yield and growth characteristics of winter wheat.【Result】The effective rainfall from March 31 toApril 2 was 42.0 mm. Under spring one-water irrigation conditions, SPAD value and net photosynthetic rate (Pn) at the filling period showed first increase and then decrease with the delay of the irrigation time, a3 had the highest SPAD value and Pn in the post-filling period, which were significantly higher than the other treatments (P<0.05), but the difference with CK was not significant. a3 had the highest average filling rate of 1.98 mg/d from 12 d to 27 d after flowering under spring one-water irrigation conditions, and the filling rate was still higher than the other treatments at 27 days after flowering. The aboveground biomass of winter wheat before flowering gradually decreased with the delay of the irrigation time, a3 had significantly higher aboveground biomass at mid-filling period and harvesting period than other treatments, which was not significantly different from CK. the dry matter transfer at the pre-flowering and the dry matter accumulation at the post-flowering of a3 were highest than the other treatments. The number of ears, grains and seed yield per unit area of winter wheat increased and then decreased with the delay of irrigation time, while a3 was significantly higher than the other spring one-water irrigation treatments, and the thousand-grain weight of a3, a4 and a5 were significantly higher than a1 and a2. The water use efficiency (WUE) and irrigation water use efficiency (WUEI) of a3 were significantly higher than the other spring one-water irrigation treatments, while the WUE of a3 was not significantly different from CK, the WUEI of a3 was significantly higher than CK. 【Conclusion】Considering the effective rainfall time and spring one-water irrigation time, under the condition that there is effective rainfall around the plucking period, the time of spring one-water irrigation in the Haihe plain area should be irrigated 5-8 days earlier according to the rainfall time, which can obtain higher yield and WUE. |
| Key words: Once irrigation in spring; Irrigation date; Winter wheat; Grain yield; Growth Characteristics |
|
|
|
|
|
|
