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近年来为了培育出水稻壮苗,开始试用生长调节剂于水稻秧苗上,可用多效唑、烯效唑于水稻浸种和秧苗喷施, 能使秧苗体内的赤霉素、吲哚乙酸、乙烯等内源激素含量下降,抑制和缓解顶端生长优势,矮化秧苗高度,增强秧苗抗逆性,抑制恶苗病的发生,有利于培育带蘖的矮壮秧,提高秧苗素质,促进苗期根系发育和栽后早发,提高分蘖率和成穗率,为增产打下基础。多效唑和烯效唑的使用方法是: 多效唑的使用方法:在水稻秧苗长出一叶一心与三叶一心阶段,每亩喷洒200ppm100公斤药液,其配制法:用15%的多效唑可湿性粉剂133克,对水100公斤充分搅拌溶解后喷洒。喷药时要选晴天下午四点后进行,喷洒前要放干田水,喷药后24小时再灌水护苗。多效唑在土壤中残留期较
In recent years in order to cultivate strong seedlings of rice, began to test the growth regulator on rice seedlings, available paclobutrazol, uniconazole in rice soaking and seedling spraying, seedling can make gibberellin, indole acetic acid, ethylene and other endogenous The decrease of hormone content, the suppression and alleviation of top growth, dwarfing height of seedling, strengthening seedling stress resistance and inhibiting the occurrence of stuttering seedling are beneficial to cultivating short stout seedling with tillering, raising the quality of seedling and promoting root development of seedling After the early hair, improve the tillering rate and the ear rate, lay the foundation for the increase. The use of paclobutrazol and uniconazole: Method of using paclobutrazol: In the rice seedling grow a heart and clover heart phase, spraying 200ppm per acre 100 kilograms of liquid, the preparation method: with 15% paclobutrazol WP 133 Grams, 100 kilograms of water fully dissolved after spraying. Spraying to be sunny at four o’clock in the afternoon after the spray, to put dry field water, spray water 24 hours after re-nursing. Paclobutrazol residues in the soil more