不同植物生长调节剂对构树营养品质的影响  

Effect of different plant growth regulators on nutritional quality of paper mulberry

作　　者：陈谭星 孙慧军 曹力凡 颜慧萍 屈伟 赵风兰[3] 闫灵敏 王品胜 CHEN Tan-xing;SUN Hui-jun;CAO Li-fan;YAN Hui-ping;QU Wei;ZHAO Feng-lan;YAN Ling-min;WANG Pin-sheng

机构地区：[1]河南省高新技术实业有限公司河南省科学院构树产业工程技术研究中心,河南郑州450002 [2]河南省科学院,河南郑州450002 [3]河南省科学院地理研究所,河南郑州450052

出　　处：《饲料研究》2022年第11期97-101,共5页Feed Research

基　　金：河南省科学院重大科研项目聚焦专项(项目编号:190114002)。

摘　　要：试验研究不同浓度的外源植物生长调节剂对构树的生长及营养成分的影响。以杂交构树为试验材料,使用3种浓度(150、250、350 mg/L)的赤霉素(GA)、胺鲜酯(DA-6)、多效唑(PP)及6-苄基氨基酸嘌呤(6-BA)进行全株喷施,测定其生长指标及营养成分。结果显示:DA-6及PP可不同程度地促进构树的生长及干物质(DM)积累,其中250 mg/L的PP处理后的构树生长最好,株高73.13 cm,茎粗13.48 mm,主茎节数和分枝数量分别为32.00和11.67个,DM为97.69 g。GA可显著提高构树的株高及平均节间长度(P<0.05),降低茎粗。6-BA对构树生长及DM的积累整体表现为轻度抑制。经GA处理的构树粗蛋白质(CP)全株比例不同程度提高,随着施用浓度增大,促进作用减小。DA-6及PP可不同程度地促进中性洗涤纤维(NDF)、中性洗涤纤维(ADF)、木质素(ADL)全株比例及蛋白总量(TP)的提高,其中250 mg/L的PP处理后的构树TP最高,为16.27 g。经6-BA处理的构树所有营养成分均小于CK组(对照组)。研究表明,4种植物生长调节剂对构树的生长和TP的促进作用大小依次为:PP>DA-6>GA>6-BA。认为在构树栽植20 d后,喷施250 mg/L的PP有利于构树生长,促进DM及TP的积累。Studying the effect of different concentrations of exogenous plant growth regulators on the growth and nutritional components of paper mulberry is of great significance for high-yield cultivation and popularization of paper mulberry.Hybrid paper mulberry seedlings were used as test materials,and three concentrations (150,250,350 mg/L) of plant growth regulators (GA,DA-6,PPand 6-BA) were used to spray the whole plant,and then the growth indexes and nutrients were measured.The results showed that DA-6 and PPcould promote the growth of paper mulberry and the accumulation of DM with a plant height of 73.13 cm,a stem diameter of 13.48 mm,the number of main stem nodes and branches were 32.00 and 11.67,and the DM was 97.69 g.GAsignificantly increased the plant height and average internode length of paper mulberry seedlings (P<0.05),and decreased stem diameter.6-BA showed a slight inhibition on the growth of paper mulberry and the accumulation of DM.From the perspective of the effect on quality,the proportion of CP whole plant of paper mulberry treated with GAshowed different degrees of increase,and this promoting effect decreased with the increase of application concentration.DA-6 and PPincreased the proportion of NDF,ADF,ADL in the whole plant and TP of paper mulberry in different degrees.Among them,the paper mulberry treated with 250 mg/LPPhad the highest TP,which was 16.27 g.All nutrients of paper mulberry treated with 6-BA were less than CK.The experiment indicates that the four plant growth regulators in the study had the following order:PP>DA-6>GA>6-BA.it is considered that spraying PPat 250 mg/L after 20 d of planting paper mulberry is conducive to cultivating strong paper mulberry and promoting the accumulation of DM and TP.

关 键 词：构树 植物生长调节剂 产量 品质 

分 类 号：S816[农业科学—饲料科学]