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自发现生长抑制剂CCC(2-氯乙基三甲基氯化胺)对农作物生长的调节作用以来,科学工作者对寻求生长抑制物质来调节作物生长发育的工作甚为关注。1970年Juny等报道了新合成的生长抑制剂CMH(2-氯乙基N-二甲基氯化肼)应用于小麦,使小麦矮化耐肥,提高了产量,并对棉花亦有类似的作用。 1976年,CMH在本所激素室合成之后,即对盆栽的棉花进行了药效试验,看到CMH能抑制棉株的顶芽和侧芽生长,使主茎伸长缓慢,株型矮健紧凑,有类似CCC的抑制作用,而且其药效比CCC长久,对于铃重则有所增加。1977年又在大田和盆栽的棉株上,用0.05%—0.1%浓度的CMH溶液,分别进行喷洒和浇根处理,结果与1976年的相似。
Since the discovery of the regulatory role of the growth inhibitor CCC (2-chloroethyltrimethyl ammonium chloride) on crop growth, scientists are concerned about the search for growth-inhibiting substances to regulate crop growth and development. In 1970, Juny et al. Reported that the newly synthesized growth inhibitor CMH (2-chloroethyl N-dimethylhydrazine chloride) was applied to wheat, dwarfing wheat to resist fertilizer and increase yield, and similar to cotton effect. In 1976, after CMH synthesized in this hormone chamber, the potted cotton was tested for efficacy. It was found that CMH could inhibit the top bud and lateral bud growth of cotton plants, slow the main stem elongation, short and firm plant type, CCC-like inhibition, and its efficacy than CCC long-term, but for the bell weight has increased. In 1977 again in the field and potted cotton plants, with 0.05% -0.1% concentration of CMH solution, respectively, spraying and pouring root treatment, the results and 1976 similar.