倒伏是高肥水条件下影响小麦产量的主要障碍之一,近年来植物生长调节剂在小麦生产上的推广应用,为防止倒伏、促进增产开辟了一条新途径,是小麦高产稳产的重要配套技术措施。 1.喷施多效唑。在小麦起身期,每667平方米喷洒200ppm多效唑溶液30公斤,可使植株矮化,抗倒伏能力增强,并能兼治小麦白粉病和提高植株对氮素的吸收利用率。 2.施用烯效唑。烯效唑(代号S—3307,商品为5％可湿性粉剂)是一种新型高效植物生长调节剂,其生物活性比多效唑高6～10倍。在小麦上施用,可以防止高密度、高肥水条件下的植株倒伏,并有减少不孕小穗和提高千粒重 Lodging is one of the major obstacles to wheat yield under high fertilizer conditions. In recent years, the application of plant growth regulators in wheat production has opened up a new way to prevent lodging and increase yield, and is an important supporting technical measure for high and stable yield of wheat . 1. spray paclobutrazol In the wheat get-up period, spraying 30 kg of 200 ppm paclobutrazol solution per 667 square meters can make the plants dwarf and enhance the lodging resistance, and can cure wheat powdery mildew and improve the plant nitrogen uptake and utilization rate. 2. Uniconazole application. Uniconazole (code: S-3307, 5% wettable powder) is a new and efficient plant growth regulator with 6-10 times higher biological activity than paclobutrazol. Application on wheat prevents plant lodging under high-density, high-fat conditions, reduces spikelets and increases 1000-grain weight