不同密度拉巴豆与旱地玉米间作栽培对混合青贮饲料品质的影响  

Effects of intercropping of different densities of dolichs lablab and dryland maize on the quality of mixed silage

作　　者：李文彬 柴明杰 张斌 孔新利 朱俊峰 蒋长虹 申世瑛 郑炳辉 梁天柱 李雪瑛[3] LI Wenbin;CHAI Mingjie;ZHANG Bin;KONG Xinli;ZHU Junfeng;JIANG Changhong;SHEN Shiying;ZHENG Binghui;LIANG Tianzhu;LI Xueying(Pingliang Animal Husbandry and Fishery Station,Pingliang 744000,Gansu;Dangyuan Town Animal Husbandry and Veterinary Station,Jingchuan County,744000,Pingliang,Gansu;Zhuanglang County Agricultural Technology Promotion Center,744000,Pingliang,Gansu)

机构地区：[1]平凉市畜牧渔业站,甘肃平凉744000 [2]泾川县党原镇畜牧兽医站,甘肃平凉744000 [3]庄浪县农业技术推广中心,甘肃平凉744000

出　　处：《中国饲料》2022年第14期13-18,共6页China Feed

基　　金：平凉红牛产业优质饲草生产模式研究与示范(平科任自[2020]2号)。

摘　　要：文章旨在通过设计不同密度拉巴豆与旱地玉米间作栽培,研究其对混合青贮饲料品质的影响。试验设为11个处理,每个处理3个重复。对照组(D0)为玉米单播,试验组(X1~X10)为不同密度拉巴豆(3000~12000株/亩)与旱地玉米间作栽培。研究发现,(1)生物产量:X8组显著高于其他组(P<0.05),X5组显著高于D0组(P<0.05),随着密度的增加,生物产量先增加至10000株/亩后开始下降;(2)干物质含量:X1、X2、X5、X6、X9组显著高于其他组(P<0.05),以X5组为中心随着密度增加,呈现先增加后减少的趋势;(3)粗蛋白质含量:X8、X10组显著高于X4、X7、X9组(P<0.05),试验组除X7组外其他组均显著高于对照组(P<0.05),随密度增加有微弱增加的趋势;(4)水溶性碳水化合物含量:X2组显著高于其他组(P<0.05),X4、X5组显著高于D0、X1、X3、X7、X8、X9组(P<0.05),随密度增加呈逐渐降低的趋势;(5)总可消化养分含量:X4组显著高于X1、X2、X5、X6、X7组(P<0.05),随密度增加呈先增加后减少的趋势。(6)pH:X7组显著低于X5组(P<0.05),其他组之间差异不显著,随密度增加呈先增大后减小的趋势;(7)7 h消化率:X9组显著高于X1、X2、X5、X6、X7、X8组(P<0.05),随密度增加呈先降低后升高的趋势。结论:拉巴豆与旱地玉米间作栽培能显著提高混合青贮饲料干物质、粗蛋白质含量,提高混合青贮饲料营养品质。密度为10000株/亩时,虽然生物产量最高,但混合青贮饲料干物质含量较低。因此,综合各项指标建议拉巴豆间作密度为6000~7000株/亩。In this experiment,the effect of intercropping on the quality of mixed silage was studied by designing the intercropping of different densities of Dolichs lablab and dryland maize.The experiment consisted of 11 treatments,each with 3 replicates.The control group(D0)was single-sowing maize,and the experimental group(X1~X10)was intercropping of different densities of Dolichs lablabs(3000~12000 plants/mu)and dryland maize.The study found that(1)the biological yield:X8 group was significantly higher than other groups(P<0.05),X5 group was significantly higher than D0 group(P<0.05),with the increase of density,the biological yield first increased to 10000 plant/mu and then began to decline;(2)dry matter content:X1,X2,X5,X6,and X9 groups were significantly higher than other groups(P<0.05),and with the X5 group as the center,with the increase of density,it showed a trend of first increase and then decrease;(3)crude protein content:X8,X10 groups were significantly higher than X4,X7,X9 groups(P<0.05),except for the X7 group,other groups in the experimental group were significantly higher than the control group(P<0.05),and there was a slight increase trend with the increase of density;(4)water-soluble carbohydrate content:X2 group was significantly higher than other groups(P<0.05),X4,X5 groups were significantly higher than D0,X1,X3,X7,X8(P<0.05),and X9 groups showed a decreasing trend with increasing density(P<0.05);(5)total digestible nutrient content:X4 group was significantly higher than X1,X2,X5,X6,and X7 groups(P<0.05),and showed a trend of first increasing and then decreasing with increasing density.(6)pH:The X7 group was significantly lower than the X5 group(P<0.05),and the difference between the other groups was not significant(P<0.05),and showed a trend of first increasing and then decreasing with the increase of density;(7)7 h digestibility:X9 group was significantly higher than X1,X2,X5,X6,X7(P<0.05),In the X8 group,it first decreased and then increased with the increase of density.The intercropping of Dolichs l

关 键 词：拉巴豆 玉米 间作密度 混合青贮 营养品质 

分 类 号：S816.6[农业科学—饲料科学]