种植密度对杂交构树生长和营养成分的影响  

Effect of different planting densities on growth and nutrient composition of hybrid Broussonetia papyrifera

作　　者：曹力凡 高正龙 陈谭星 颜慧萍 孟庆法[2] 魏攀鹏 魏悦[3] 王品胜 CAO Li-fan;GAO Zheng-long;CHEN Tan-xing;YAN Hui-ping;MENG Qing-fa;WEI Pan-peng;WEI Yue;WANG Pin-sheng

机构地区：[1]河南省高新技术实业有限公司,河南郑州450002 [2]河南省科学院地理研究所,河南郑州450052 [3]河南省生物技术开发中心,河南郑州450002

出　　处：《饲料研究》2021年第7期133-137,共5页Feed Research

基　　金：河南省科学院重大科研聚焦专项(项目编号:190114002)。

摘　　要：试验探究杂交构树在兰考地区的最适种植密度。试验设置7个种植密度组(618、823、1058、1235、1482、1853、2118株/667m^(2)),研究种植密度对杂交构树农艺性状、产量和品质的影响。结果显示,随着种植密度的增加,植株的株高、茎粗、节间长度、叶面积系数整体呈上升趋势,冠幅、分支和叶片数量则呈减少趋势。杂交构树生物产量随密度增加呈线性增长,蛋白产量随密度的增加先增高后降低,在种植密度1482株/667m^(2)时蛋白产量最高。杂交构树粗蛋白(CP)、总黄酮、钙(Ca)含量随种植密度的增加而减少,中性洗涤纤维(NDF)、酸性洗涤纤维(ADF)和木质素(ADL)随种植密度的增加先减少后增加。试验表明,1482株/667m^(2)种植密度下,杂交构树的蛋白产量最高、生物产量较高、粗纤维和木质素含量较低,兼具经济效益和利用价值,是兰考地区推广杂交构树最适宜的种植密度。The experiment explored the most suitable planting density of hybrid Broussonetia papyrifera in Lankao area.Seven planting densities group(618,823,1058,1235,1482,1853,2118 plants/667m^(2))were set to study the influence of planting density on the agronomic characters,yield and quality of hybrid Broussonetia papyrifera.The results showed that with the increase of planting density,the plant height,stem diameter,internode length and leaf area coefficient were on the whole increased,while the crown width,branch and leaf number were on the decrease.The yield of hybrid Broussonetia papyrifera increased linearly with the increase of density,and the protein yield first increased and then decreased with the increase of density.The protein yield was the highest at the planting density of 1482 plants/667 m^(2).With the increase of planting density,the contents of crude protein,total flavonoids and calcium in hybrid conformation were decreased,while the contents of neutral washing fiber,acid washing fiber and lignin were decreased first and then increased.The experiment indicates that under the treatment density of 1482 plants/667m^(2),the yield of protein is the highest,the biological yield is higher,the crude fiber and lignin content is lower,and it has both economic benefit and utilization value.It is the most suitable planting density for promoting the hybrid Broussonetia papyrifera in Lankao area..

关 键 词：杂交构树 种植密度 产量 品质 

分 类 号：S816[农业科学—饲料科学]