不同时期喷施二氢卟吩铁对粳稻抗倒伏能力的影响

doi:10.16178/j.issn.0528-9017.20240794

摘要/Abstract

摘要：

为探究叶面喷施二氢卟吩铁对水稻茎秆抗倒伏能力及其形态生理特性的影响,本试验选用粳稻W3668进行田间试验。叶面喷施二氢卟吩铁,特别是在拔节期进行喷施,是一种提高水稻茎秆抗倒伏能力的有效方法。拔节期喷施二氢卟吩铁显著增加了茎粗和茎秆内外径,而苗期喷施则显著提高了茎壁厚度。此外,相比于叶面喷施,拔节期喷施更有效地抑制了基部节间的伸长,显著增加了基部节间的充实度,增强了茎秆的机械强度。产量方面,拔节期喷施显著提高了水稻产量,增加了每穗粒数和结实率,优化了水稻产量构成。研究表明,拔节期喷施二氢卟吩铁在提高水稻抗倒伏能力和增产方面具有显著效果。

关键词: 粳稻, W3668, 抗倒伏, 二氢卟吩铁

Abstract:

To investigate the effect of foliar application of iron chlorine e6 on the lodging resistance of rice stems and their morphological and physiological characteristics, a field experiment was conducted using japonica rice variety W3668. Foliar application of iron chlorine e6, especially at the jointing stage, was proved to be an effective method for enhancing the lodging resistance of rice stems. Application at the jointing stage significantly increased stem diameter and both the inner and outer diameters of the stem, while application at the seedling stage notably increased stem wall thickness. Moreover, compared with foliar application at the seedling stage, application at the jointing stage more effectively controlled the elongation of the basal internodes and significantly enhanced their filling, thereby increasing the mechanical strength of the stems. In terms of yield, the jointing stage application significantly improved rice yield by increasing the number of grains per panicle and the seed-setting rate, thus optimizing the yield components. The study indicates that iron chlorine e6 application at the jointing stage has a remarkable effect on improving both rice lodging resistance and yield.

Key words: japonica rice, W3668, lodging resistance, iron chlorine e6

中图分类号:

S511

翁飞, 汪溢, 许乃霞, 李庆魁. 不同时期喷施二氢卟吩铁对粳稻抗倒伏能力的影响[J]. 浙江农业科学, 2025, 66(2): 313-317.

WENG Fei, WANG Yi, XU Naixia, LI Qingkui. Effects of spraying iron chlorine e6 at different stages on the lodging resistance of japonica rice[J]. Journal of Zhejiang Agricultural Sciences, 2025, 66(2): 313-317.

图/表 5

参考文献 18

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处理	茎粗/mm	壁厚/mm	短轴外径/mm	短轴内径/mm	长轴外径/mm	长轴内径/mm
CK	4.54 b	0.65 b	4.31 a	3.17 ab	4.85 b	3.38 b
苗期喷施	4.48 b	0.72 a	4.25 a	2.94 b	4.70 b	3.12 b
拔节期喷施	4.92 a	0.60 b	4.56 a	3.44 a	5.22 a	3.94 a

处理	茎粗/mm	壁厚/mm	短轴外径/mm	短轴内径/mm	长轴外径/mm	长轴内径/mm
CK	4.54 b	0.65 b	4.31 a	3.17 ab	4.85 b	3.38 b
苗期喷施	4.48 b	0.72 a	4.25 a	2.94 b	4.70 b	3.12 b
拔节期喷施	4.92 a	0.60 b	4.56 a	3.44 a	5.22 a	3.94 a

处理	株高/cm	第一节间长/cm	第二节间长/cm	第三节间长/cm
CK	106.53 b	5.03 b	11.20 b	21.17 a
苗期喷施	110.77 ab	6.97 a	13.95 a	18.71 b
拔节期喷施	113.83 a	6.03 ab	12.34 ab	21.03 a

处理	株高/cm	第一节间长/cm	第二节间长/cm	第三节间长/cm
CK	106.53 b	5.03 b	11.20 b	21.17 a
苗期喷施	110.77 ab	6.97 a	13.95 a	18.71 b
拔节期喷施	113.83 a	6.03 ab	12.34 ab	21.03 a

处理	第一节间干重/g	第二节间干重/g	第三节间干重/g	第一节间单位长度干重/(mg·cm^-1)	第二节间单位长度干重/(mg·cm^-1)	第三节间单位长度干重/(mg·cm^-1)
CK	0.10 b	0.12 b	0.15 b	14.21 b	10.68 b	7.16 a
苗期喷施	0.13 a	0.17 a	0.16 b	19.20 b	12.18 ab	8.30 a
拔节期喷施	0.15 a	0.19 a	0.18 a	25.99 a	15.43 a	8.65 a