作物研究2025，Vol.39Issue(5)：412-418,7.
植物生长调节剂对冬小麦茎秆形态及产量构成的影响
Effects of Plant Growth Regulators on Stem Morphology and Yield Composition of Winter Wheat
摘要
Abstract
In order to explore the regulatory effects of plant growth regulators on stem morphology and yield components of Xinjiang winter wheat,a random block design was used to use the main cultivar Xindong 52 as test material,and water was used as the control treatment(CK),PGR1(anti-busting ester),PGR2(15%calcium protranate),PGR3(chlormequat)and the compound combination PGR4(anti-decanoic acid+15%calcium permethanoate),PGR5(anti-decanoic acid+chlormequat),PGR6(chlormequat acid+15%calcium permethanoate),and PGR7(anti-decanoic acid+15%calcium permethanoate+chlormequat acid),were sprayed on the leaves at the jointing stage and heading stage to compare and analyze the stem morphology and yield indicators of winter wheat during the maturity stage of different treatments.The results showed that,PGR1 treatment had the best effect on reducing plant height,which significantly reduced the plant height by 21.4%compared with the control,followed by PGR3 treatment;PGR4 treatment had the best yield,reaching 7 645.07 kg/hm2,which was significantly higher than PGR5,PGR6 and PGR7 treatments,but there was no significant difference from other treatments;and PGR4 treatment had 29.7%higher ear length than the control,the highest thousand-grain weight(42.54 g),and the largest stem diameter at the second internode(3.71 mm);PGR3 treatment had the highest effective ear number.Compound treatments containing chlormequat(PGR5,PGR7)resulted in the effective panicle number≤4.485 million/hm2 and the sterile spikelets number≥3.7 due to antagonistic effect.Correlation analysis showed that there was a significant positive correlation between yield and stem diameter at the 2nd and 4th internodes.Comprehensive analysis shows that anti-rotting ester has the best effect on enhancing lodging resistance.Chlormequat is suitable for panicle stabilization cultivation.Anti-rotting ester+15%calcium propenate can achieve collaborative optimization of high-yield traits by regulating stem configuration and ear development.The results can provide effective strategies for stress-resistant and high-yield cultivation of winter wheat in Xinjiang.关键词
冬小麦/茎秆/产量/植物生长调节剂Key words
winter wheat/culms/yield/plant growth regulators分类
农业科技引用本文复制引用
张红霞,赵永刚,贺立强,王志刚,陈丽华,刘宁宁..植物生长调节剂对冬小麦茎秆形态及产量构成的影响[J].作物研究,2025,39(5):412-418,7.基金项目
第七师胡杨河市科技计划项目(2025C12,2023C09). （2025C12,2023C09）
