Regulation Effects of Chemical Regulators on Main Traits and Yield of Dryland Winter Wheat
To explore the role of chemical regulators in the winter wheat growth process,winter wheat was treated with Duntianbao or potassium dihydrogen phosphate at 3 to 4 leaf stage,rising stage and early grain filling stage in Qingshui county,and its effects on growth period,growth dynamics,main traits and yield were detected.The results showed that spraying chemical control agent at 3 to 4 leaf stage before winter could promote the growth and development of winter wheat and build strong seedling before winter.It is more beneficial to increase effective tillering,reduce plant height and prevent lodging by spraying at the same time at 3 to 4 leaf stage and rising stage before winter.The simultaneous application of chemical control agent at the rising stage and the early filling stage could effectively increase spike length,spikelet number,grain number per spike and 1000-grain weight,thus significantly increasing the yield,and the effect of spraying Duntianbo was better than that of spraying KH2PO4.The highest yield of winter wheat was 5 573.33 kg/ha when spraying 750 mL/ha of Duntianbao diluted with 225 kg water at 3 to 4 leaf stage before winter,rising stage and early filling stage,which was 10.00%higher than that of spraying water.In summary,spraying Duntianbao at 3 to 4 leaf stage,rising stage and early filling stage before winter is more conducive to high quality and high yield of winter wheat,which is suitable for promotion in production.
国家科技期刊平台
NSTL
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