GE Xin,REN Hui-lin,CHEN Xun-qi,et al.Effects of BR and DA-6 Compounded with S3307 Seed Dressing on Growth and Yield of Soybean Under Drought Stress at Seedling Stage[J].HEILONGJIANG AGRICULTURAL SCIENCES,2022,(12):38-43,48.[doi:10.11942/j.issn1002-2767.2022.12.0038]
BR与DA-6复配S3307拌种对苗期干旱胁迫下大豆生长和产量的影响
- Title:
- Effects of BR and DA-6 Compounded with S3307 Seed Dressing on Growth and Yield of Soybean Under Drought Stress at Seedling Stage
- Keywords:
- BR and DA-6; S3307; soybean; drought stress
- 文献标志码:
- A
- 摘要:
- 为了减少干旱胁迫对大豆生产造成的损失,为大豆抗旱生产提供参考,本研究选用黑河43为供试品种,在玻璃防雨棚内通过称重法模拟干旱胁迫,研究了BR与DA-6复配S3307拌种对苗期干旱胁迫下大豆幼苗形态、抗氧化酶活性、光合作用以及收获期产量的影响。结果表明,与干旱胁迫相比,不同浓度BR与DA-6复配S3307处理均可在一定程度上改善大豆幼苗生长,其中T3(0.28 mg·L-1的BR复配2.50 mg·L-1的S3307)和T7(30.00 mg·L-1的DA-6复配2.50 mg·L-1的S3307)处理在提高大豆幼苗生物量等方面效果显著;各复配处理均可提高控水后第10天和第20天大豆幼苗抗氧化酶活性,并且T3和T7处理的促进效果最显著;T3和T7处理可显著提高控水后第10 天大豆幼苗Pn和Gs,提高幅度分别为26.04%和14.59%,以及11.96%和1471%,其他复配处理的改善作用均未达到显著水平;T5(30.00 mg·L-1的DA-6)、T3和T7处理产量显著高于对照,增产率分别为14.87%、18.55%和27.70%;各处理对蛋白质和脂肪含量的影响不显著,甚至个别处理显著降低了脂肪含量。综合分析认为,T3和T7处理可显著提高干旱胁迫下达到幼苗抗旱能力、改善光合作用、促进幼苗生长,并可显著提高大豆产量,可在实际生产中进一步验证其减灾增产效果。
- Abstract:
- In order to reduce the loss of soybean production caused by drought stress and provide reference for soybean drought resistance production, Heihe 43 was selected as the test variety. And the effects of seed dressing with S3307 combined with BR and DA-6 on soybean seedling morphology, antioxidant enzyme activities, photosynthesis and yield at harvest stage under drought stress were studied in a glass rain shelter by weighing method. The results showed that compared with drought stress, treatments of BR and DA-6 combined with S3307 at different concentrations could improve soybean seedling growth to a certain extent, and T3 (0.28 mg·L-1 BR combined with 2.50 mg·L-1 S3307) and T7 (30.00 mg·L-1DA-6 combined with 2.50 mg·L-1 S3307) had significant effects on improving soybean seedling biomass. The antioxidant enzyme activities of soybean seedlings could be increased by each complex treatment on the 10th and 20th day after water control, and the effect of T3 and T7 treatments were the most significant.T3 and T7 treatments could significantly increase the Pn and Gs of soybean seedlings on the 10th day after water control,with the increase ranges of 26.04% and 1459%, 11.96% and 14.71%, respectively, and the improvement effects of other complex treatments were not significant. The yield of T5 (30.00 mg·L-1 DA-6), T3 and T7 treatments were significantly higher than that of the control, and increase rate were 14.87%, 18.55% and 27.70% respectively. The effect of each treatment on protein and fat content was not significant,and even individual treatment significantly reduced fat content. Comprehensive analysis showed that T3 and T7 treatments could significantly improve the drought resistance of seedlings improve photosynthesis, promote seedling growth under drought stress, and significantly increase soybean yield, which could further verify the effect of disaster reduction and yield increase in actual production.
参考文献/References:
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备注/Memo
收稿日期:2022-08-13