小麦拔节期冻害补救措施对其产量及产量构成的影响  

Remedial Measures for Freezing Damage During Wheat Jointing Stage and Their Impact on Yield and Yield Composition

作　　者：刘国林 LIU Guolin(Agricultural and Rural Bureau of Diaoyu Town in Xinghua City,Xinghua Jiangsu 225761)

机构地区：[1]兴化市钓鱼镇农业农村局,江苏兴化225761

出　　处：《现代农业科技》2024年第4期22-24,共3页Modern Agricultural Science and Technology

摘　　要：江苏里下河地区小麦拔节孕穗期常遭遇低温寒潮天气,造成小麦冻害,影响小麦生产。本试验针对生产上小麦拔节期前后发生冻害的实际情况,采取了不同的补救措施,研究其对小麦产量及产量构成的影响。结果表明,对于已拔节且已施用过拔节肥的小麦类型田,以冻害后施用45%三元复合肥690 kg/hm^(2)的处理保产效果最好;其次为冻害后施用尿素75 kg/hm^(2),并于10 d后追施尿素75 kg/hm^(2)的处理。对于未拔节且未施用过拔节肥的小麦类型田,以冻害后施用45%复合肥225 kg/hm^(2)+尿素225 kg/hm^(2)的处理产量最高。During the jointing and booting stages of wheat in the Lixiahe area of Jiangsu Province,low temperatures are often occurred,causing wheat freezing damage and affecting wheat production.This experiment focused on the actual situation of freezing damage in wheat production before and after the jointing stage,and adopted different remedial measures to study their impact on wheat yield and yield composition.The results showed that for wheat fields that have already been jointing and have been treated with jointing fertilizer,the treatment of applying 45%ternary compound fertilizer 690 kg/hm^(2) after freezing damage had the best yield retention effect;the second treatment is to apply urea 75 kg/hm^(2) after freezing damage,and to apply urea 75 kg/hm^(2) after 10 days.For wheat fields without jointing and without applying jointing fertilizer,the treatment of applying 45%compound fertilizer 225 kg/hm^(2)+urea 225 kg/hm^(2) after freezing damage had the highest yield.

关 键 词：小麦 冻害 补救措施 产量 产量构成 

分 类 号：S512[农业科学—作物学] S166