安徽农学通报2026，Vol.32Issue(9)：7-11,5.DOI:10.16377/j.cnki.issn1007-7731.2026.09.002
植物保护剂施用时期及次数对再生稻病害防控及增产的影响
Effects of application period and frequency of a plant protection formulation treatment on disease prevention and yield increase of ratoon rice
王帅 1张赛峰 1曹明章 1李广泽 1王京 1施高强 1李超1
作者信息
- 1. 深圳诺普信作物科学股份有限公司,广东 深圳 518102
- 折叠
摘要
Abstract
To explore the effects of plant protectants[42%trifloxystrobin·tebuconazole suspension concentrate(SC),12.5%epoxiconazole SC,stress-resistant additives and yield-increasing additives]on disease prevention and yield improvement of ratoon rice,and clarify the optimal application period and frequency,ratoon rice variety Jingliangyou 8612 was selected as the test material.Five treatments were set in this experiment:T1(seedling stage+late tillering stage+pre-booting stage),T2(late tillering stage+pre-booting stage),T3(late tillering stage+pre-booting stage+full heading stage),T4(late tillering stage+pre-booting stage+ratoon season pre-booting stage),and T5(pre-booting stage+full heading stage+ratoon season pre-booting stage).Meanwhile,the commercially available pesticide control T6(sprayed with 300 g/L difenoconazole·propiconazole EC at late tillering stage and 325 g/L difenoconazole·azoxystrobin SC at pre-booting stage)and blank control(CK)were established.The control efficiency against rice sheath blight,agronomic traits and yield in each treatment were investigated.The results showed that T1-T4 presented excellent control effects on sheath blight,with the diseased plant rate ranging from 3.28%to 16.4%and the control efficiency ranging from 90.18%to 98.18%.In terms of agronomic traits,T1 had the thickest stem diameter(6.50 mm)of main crop rice;T3 obtained the highest effective panicle number(361.8 plants/m²)of main crop rice and the highest ratooning rate(1.48%);T4 had the maximum effective panicle number(377.2 plants/m²)in the ratoon season.In terms of yield,the T1 treatment achieved the highest grain yield of the main crop rice at 9.20 t/hm²,while the T4 treatment had the highest yield of ratoon rice(4.36 t/hm²)and the maximum total yield(13.33 t/hm²).Comprehensive analysis indicated that the application of plant protectants could significantly enhance disease resistance and grain yield of ratoon rice.Under the experimental conditions,treatment T4 exhibited the best comprehensive regulation effect.This study provides a theoretical and practical reference for the rational application of plant protectants in ratoon rice production.关键词
再生稻/植物保护剂/纹枯病/农艺性状/产量Key words
ratoon rice/plant protection formulation/sheath blight/agronomic traits/yield分类
农业科技引用本文复制引用
王帅,张赛峰,曹明章,李广泽,王京,施高强,李超..植物保护剂施用时期及次数对再生稻病害防控及增产的影响[J].安徽农学通报,2026,32(9):7-11,5.
