Effects of Different Acid-Regulating Agents on the Acid-Regulating Effect of Rice Seedling Substrate and Seedling Growth

doi:10.3969/j.issn.1006-8082.2022.01.012

China Rice ›› 2022, Vol. 28 ›› Issue (1): 58-62.DOI: 10.3969/j.issn.1006-8082.2022.01.012

• Special Thesis & Basic Research • Previous Articles Next Articles

Effects of Different Acid-Regulating Agents on the Acid-Regulating Effect of Rice Seedling Substrate and Seedling Growth

ZHU Chunquan¹(), XU Qingshan¹, WEI Qianqian¹^,², WANG Wei³, WANG Genhuo³, LIN Jun³, SUN Aijun⁴, HONG Xiaozhi⁴, CAO Xiaochuang¹, ZHU Lianfeng¹, KONG Yali¹, JIN Qianyu¹, ZHANG Junhua¹^,^*()

¹China National Rice Research Institute / State Key Laboratory of Rice Biology, Hangzhou 310006, China
²Anhui University, Hefei 230000, China
³Wuhu Qingyijiang Seed Co.Ltd, Wuhu, Anhui 241300, China
⁴Bengbu Yifeng Bio-orgaic Fertilizer Co. Ltd, Bengbu, Anhui 233300, China

Received:2021-08-20 Online:2022-01-20 Published:2022-01-18
Contact: ZHANG Junhua

不同调酸剂对水稻育秧基质调酸效果及对秧苗生长的影响

朱春权¹(), 徐青山¹, 魏倩倩¹^,², 汪玮³, 汪根火³, 林军³, 孙爱军⁴, 洪小智⁴, 曹小闯¹, 朱练峰¹, 孔亚丽¹, 金千瑜¹, 张均华¹^,^*()

¹中国水稻研究所/水稻生物学国家重点实验室,杭州 310006
²安徽大学,合肥 230000
³芜湖青弋江种业有限公司,安徽芜湖 241300
⁴蚌埠市亿丰生物肥有限公司,安徽蚌埠 233300

通讯作者: 张均华
作者简介:zhuchunquan@caas.cn
基金资助:
国家自然科学基金青年项目(31901452);浙江省自然科学基金(LQ19C020007);国家自然科学基金面上项目(31872857);国家自然科学基金面上项目(31771733)

Abstract

Abstract:

Suitable pH in rice seedling substrate is not only beneficial to the normal growth of rice, but also beneficial to the resistance of rice to disease. Therefore, it is necessary to study the effects of different types of acid-regulating agents on acid-regulating effect of rice seedling substrate and rice growth. The fermentation substrate made by ourselves are used in present study and applied with different concentrations of citric acid, dilute sulfuric acid, sulfur, ammonium dihydrogen phosphate, the pH and electrical conductivity （EC） of the substrate were detected. Samples were collected after 12 days’ growth, and the results showed that:（1） the application of ammonium dihydrogen phosphate showed a better acid-regulating effect and lower EC value than other treatments; the application of citric acid, dilute sulfuric acid and sulfur also displayed well acid-regulating effect, however, EC value of seedling substrate was increased with the increasing of acid-regulating agents concentration.（2） The plant height, root length, aboveground dry weight of 100 plants, aboveground total N and total P contents of the rice seedlings in the ammonium dihydrogen phosphate treated seedling substrate were significantly higher than other treatments. The growth index of rice seedlings which treated with dilute sulfuric acid and sulfur were inferior to the ammonium dihydrogen phosphate treatment, and the rice growth was inhibited under high acid-regulating agents’ concentration conditions. However, the leaves of the rice seedlings in the dilute sulfuric acid treatment contained higher chlorophyll content. The root growth of rice seedlings was significantly inhibited by citric acid. In conclusion, ammonium dihydrogen phosphate can be used as an acid-regulating agent for fermentation substrate in this experiment, followed by sulfuric acid and sulfur, while citric acid is not suitable as an acid-regulating agent for fermentation substrate.

Key words: rice, fermentation substrate, acid agent, physical and chemical properties, growth

摘要：

育秧基质合适酸碱度（pH值）不仅有利于水稻正常生长,同时有利于预防水稻病害。因此,研究不同类型调酸剂对育秧基质的调酸效果,以及育秧过程中对水稻生长的影响很有必要。以我们自己研制的发酵基质作为研究对象,分别添加不同浓度的柠檬酸、稀硫酸、硫磺、磷酸二氢铵,测定基质的pH值和电导率（EC值）。播种后12 d取样,结果发现：（1）磷酸二氢铵的调酸效果较好,并且EC值较低;柠檬酸、稀硫酸和硫磺也具有较好的调酸效果,但在高浓度下会显著增加育秧基质的EC值。（2）磷酸二氢铵处理后育出的秧苗株高、根长、百株地上部干物质量、地上部总氮、总磷含量均显著高于其他调酸剂处理的秧苗;硫酸和硫磺处理组的秧苗生长指标次于磷酸二氢铵,并且在高浓度下对水稻生长有抑制作用,但稀硫酸处理组育出的水稻秧苗叶片含有更高的叶绿素含量;柠檬酸处理显著抑制水稻秧苗根系的生长。综上所述,本试验中磷酸二氢铵适宜作为发酵基质的调酸剂,稀硫酸和硫磺次之。

关键词: 水稻, 发酵基质, 调酸剂, 理化性质, 生长

CLC Number:

ZHU Chunquan, XU Qingshan, WEI Qianqian, WANG Wei, WANG Genhuo, LIN Jun, SUN Aijun, HONG Xiaozhi, CAO Xiaochuang, ZHU Lianfeng, KONG Yali, JIN Qianyu, ZHANG Junhua. Effects of Different Acid-Regulating Agents on the Acid-Regulating Effect of Rice Seedling Substrate and Seedling Growth[J]. China Rice, 2022, 28(1): 58-62.

朱春权, 徐青山, 魏倩倩, 汪玮, 汪根火, 林军, 孙爱军, 洪小智, 曹小闯, 朱练峰, 孔亚丽, 金千瑜, 张均华. 不同调酸剂对水稻育秧基质调酸效果及对秧苗生长的影响[J]. 中国稻米, 2022, 28(1): 58-62.

Figures/Tables 5

References 24

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Effects of Different Acid-Regulating Agents on the Acid-Regulating Effect of Rice Seedling Substrate and Seedling Growth

不同调酸剂对水稻育秧基质调酸效果及对秧苗生长的影响

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