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植物体内除含有很多营养物质外,还有一些含量甚微的活性物质,对生长具有特殊功能,在新陈代谢过程中起着重要的作用,这些微量生理活性物质,被称为植物激素。当外界不利因素使植物新陈代谢发生障碍时,激素便起调节生长发育的作用。人们根据植物激素的这一特点,合成生长调节剂,用来调节植物的生长发育,以提高产量,改善品质,增加经济效益。现将植物生长调节剂在烤烟上的试验及应用情况,分述如下。一、抑制腋芽适时摘除腋芽是提高烟叶质量的重要措施之一。但人工摘芽(或称抹杈)用工多,而且容易传播病害,摘除不及时影响产量、质量,因此,才有化学方法抑制腋芽的试验与应用。烟草化学抑芽是40年代末,由美国北卡
In addition to the plant body contains many nutrients, there are some very little active substance, has a special function on growth, plays an important role in the metabolic process, these trace physiologically active substances, known as plant hormones. When unfavorable factors make plant metabolism obstacles, hormones will play a role in regulating growth and development. According to this feature of plant hormones, synthetic growth regulators, used to regulate the growth and development of plants to increase yield, improve quality and increase economic efficiency. Now plant growth regulator in the experiment and application of flue-cured tobacco, are described below. First, inhibition of axillary bud timely axillary bud removal is one of the important measures to improve the quality of tobacco. However, the artificial extraction of buds (or wiping the twigs) consume more labor, and it is easy to spread the disease. The removal does not affect the yield and quality in a timely manner. Therefore, there is a chemical method to inhibit the test and application of axillary buds. Tobacco chemical suppression bud is the late 40s, by the United States North Carolina