| 引用本文: | 于 乐,吴鑫淼,郄志红,等.新型液体保水剂对冬小麦生长及产量的影响[J].灌溉排水学报,2018,37(7):1-5. |
| YU Le,QIE Zhihong,WU Xinmiao,et al.新型液体保水剂对冬小麦生长及产量的影响[J].灌溉排水学报,2018,37(7):1-5. |
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| 摘要: |
| 【目的】 阐明新型液体保水剂对冬小麦生长及产量的影响。【方法】 采用大田完全随机试验设计方法，设置添加固体保水剂（K1）和新型液体保水剂（K2）处理，以不施用保水剂（CK）为对照，研究了不同用量保水剂（C1：30 kg/hm2、C2：60 kg/hm2、C3：90 kg/hm2）对冬小麦株高、叶面积指数及产量的影响。【结果】 ①保水剂不但提高了各生育期的土壤含水率，还促进了冬小麦的生长，拔节期K2处理冬小麦株高均值分别比CK和K1处理高13.6%和2.6%。②冬小麦生育期前195 d，K1C1和K1C2处理叶面积指数显著高于K1C3处理，K2处理叶面积指数随施用量的增加而增加；200 d后，K2C1和K2C2处理叶面积指数显著高于其他处理。③K2处理成穗数分别比CK和K1处理高8.7%和14.6%，K2处理产量均值为11 973.2 kg/hm2，分别比CK和K1处理高22.3%和13.6%，并且当K2处理施用量为60 kg/hm2时，产量达到最大值12 818.2 kg/hm2。【结论】 K2处理对冬小麦生长和增产的效果明显，且用量为60 kg/hm2时效果最佳。 |
| 关键词: 新型保水剂； 冬小麦； 株高； 叶面积指数； 产量 |
| DOI：10.13522/j.cnki.ggps.2017.0460 |
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| Efficacy of a Liquid Water-retaining Enhancer in Improving Growth and Yield of Winter Wheat |
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YU Le, QIE Zhihong, WU Xinmiao, RAN Yanli, CUI Xidong
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Institute of Urban and Rural Construction, Agricultural University of Hebei, Baoding 071001, China； Hengshui Bureau for Hydrology and Water Resources Survey of Hebei Province, Hengshui 053000, China
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| Abstract: |
| 【Objective】 Drought is a common abiotic stress impacting agricultural production. Amending soil with water-retaining enhancers is a way to improve soil moisture and ameliorate water stress. 【Method】 A randomized experiment was conducted aiming to investigated the efficacy of amending soil with a liquid water-retaining enhancer (K2) to improve growth and yield of winter wheat in comparison with amendment with a solid water-retaining enhancer (K1) and no amendment (CK). The enhances were applied at 30 kg/km2 (C1), 60 kg/km2 (C2) and 90 kg/km2 (C3) respectively. During the experiment, we measured the plant height, leaf-area index and yield of the winter wheat. 【Result】①Amending the soil with the liquid water-retaining enhancer increased soil moisture, and thus the plant growth, by 13.6% and 2.6% respectively compared to CK and K1. ②After195 days, the leaf area index under K2+C1 and K2+C2 was significantly higher than those under K1+C3. In the two K2 treatments, the leaf area index increased with the chemical application and after 200 days, it was significantly higher than those under other treatments. ③ Compared with CK and K1, K2 increased the plant panicles by 8.7% and 14.6% respectively, and had an average yield of 11 973.2 kg/hm2, increasing by 22.3% and 13.6% respectively. The highest yield was 12 818.2 kg/hm2, achieved in K2+C3. 【Conclusion】 Amending soil with the liquid water-retaining enhancer noticeably improved the growth and yield of the winter wheat, and the optimal application rate in our experiments was 60 kg/hm2. |
| Key words: water-retaining enhancer; winter wheat; plant height; leaf area index; yield |
