菠萝生产上通常采用营养繁殖法,将冠芽、吸芽、裔芽等切下扦插育苗,但繁殖速率很低。近年来,日本冲绳县农试八重山支场与热带农业研究中心冲绳支所,试验用生长调节剂诱发营养芽的产生,高效地获得了大量的苗木。 为了促进营养芽的发生,除采用摘心等物理方法外,还使用形态素等化学物质进行处理。形态素是一种人工合成的植物生长调节剂,能使植物失去趋光性、向地性,使生长发育延迟,并产生矮化等异常形态。我们则利用它抑制植物生长激素的极性流动,使顶端优势丧失,促进腋芽萌发的性质在菠萝上作试验。供试的形态素是日产化学公司生产的以CF—125为试验名的物质。 一、春季摘心的效果:冲绳农试八重山支场在4月上旬,对已收获两次的植株,用400PPM的乙烯利加 4％的尿素溶液进行秋果花芽分化处理,并用竹制压刀压损吸芽生长点。调查结果表明,进行春季摘心处理后每10公亩采苗总数是5940株,比无处理的对照区采苗4230株增加40％,其中,可作为种苗使用的苗,春季摘心处理有2970株,比无处理的1630株增加82.5％。(注:1公亩=0.15市亩) Pineapple production is usually used nutrition reproduction method, crown buds, buds, buds and other cutting cuttings, but the breeding rate is very low. In recent years, Okinawa prefecture, Okinawa Prefecture, Japan, took part in the Okinawa branch of Yaeyama Plantations and Research Center for Tropical Agriculture, and experimentally induced the growth of vegetative shoots with growth regulators to obtain large quantities of seedlings efficiently. In order to promote the occurrence of nutrition buds, in addition to using physical methods such as topping, but also the use of morphological and other chemical substances for processing. Morphogenetic is a synthetic plant growth regulator that can make plants lose their phototaxis, geotropism, so that growth and development delay, and dwarf and other abnormal morphology. We use it to inhibit the polarity of plant growth hormone flow, the loss of the top advantage, and promote the germination of axillary buds on the nature of the experiment. Morphozoal for testing is manufactured by Nissan Chemical Co., Ltd. under the name of CF-125. First, the spring topping effect: Okinawa agricultural trial Yaesu backcourt In early April, two plants have been harvested, with 400PPM of ethylene plus 4% of the urea solution for autumn flower bud differentiation, and with a bamboo knife pressure loss Suction bud growth point. The survey results showed that the total number of seedlings per 10 acres was 5940 after in-line topping treatment in spring, which was 40% more than the 4230 from the untreated control area, of which seedlings could be used as seedlings. In spring, , An increase of 82.5% over 1630 strains without treatment. (Note: 1 acre = 0.15 mu)