B_9,即B_(999),是一种植物生长延缓剂。1973年沈阳化工研究院本着“洋为中用”的原则,立足国内资源,合成了B_9,在国内供有关单位进行应用试验。 B_9的化学名:N-二甲胺基琥珀酰胺,分子式:C_6H_(12)N_2o_3,结构式:纯品为白色结晶,工业品为浅黄色,微臭,不易挥发。 B_9具有一般植物生长延缓剂所共有的特性,如延缓茎的伸长,使叶加厚,叶色浓绿,促进一些木本植物花芽分化,提高果品色泽与硬度,延长贮藏时间,增加植物的抗性等。它又有一些不同于其它生长延缓剂的特点,如它调节植物所需要的剂量较高,而毒性较小,对它有反应的植物种类比较多,但它的残效期比较长,在果树上可达一年,在马铃薯上可影响到下一代。近 B_9, B_ (999), is a plant growth retardants. In 1973, Shenyang Institute of Chemical Technology based on the principle of “foreign being in use”, based on domestic resources, synthesized B_9, and applied the relevant experiment in China. B_9 chemical name: N-dimethylamino-succinamide, molecular formula: C_6H_ (12) N_2o_3, structural formula: pure white crystal, industrial products for the light yellow, smelly, not volatile. B_9 has the common features of plant growth retardants, such as to delay the elongation of the stem, so thick leaves, green leaf color, and promote some woody flower bud differentiation, improve fruit color and hardness, prolong storage time, increase plant Resistance and so on. It has a number of different characteristics from other growth retardants. For example, it modulates plants in higher doses, less toxic and more plants that respond to it. However, it has a longer residual life, Up to a year can affect the next generation on the potato. near