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采用盆栽试验和小区试验相结合的方法 ,对砂姜黑土上不同小麦品种的分蘖成穗特性及其调控进行了研究 .结果表明 ,兰考 90 6分蘖发生快、多且衰亡也最快 ,分蘖成穗率较低 ,主要是由于二、三级分蘖发生较多 ,越冬期具有 4张以上叶片的分蘖才能成穗 .温麦 6号分蘖发生平稳 ,成穗率最高 ;百农 64分蘖力中等 ,增加一定的施肥量能明显提高分蘖成穗率 .不同生长调节剂对兰考 90 6分蘖成穗有明显的调控作用 ,以 6 BAt和 2 ,4 D控制分蘖成穗效果最为明显
The pot experiment and plot experiment were used to study the tillering and spike traits of different wheat cultivars in Shajiang black soil and its regulation.The results showed that tillering in Lankao 906 occurred more quickly and decayed more, The lower spikelet rate was mainly due to more tillering in the second and third levels and the tillering with more than 4 leaves in the wintering period to become the ear.The tillering of Wenmai 6 was stable and the earliest spikelet rate was the highest, Increasing a certain amount of fertilizer could obviously increase the tillering rate, and different growth regulators could obviously regulate the tillering success of Lankao 906. The tillering effect of tillering was better with 6 BAt and 2, 4 D