摘要
试验旨在探究不同种植密度对饲用甜高粱农艺性状、产量及营养品质的影响,以确定饲用甜高粱最适种植密度。以饲用甜高粱大力士为试验材料,设置10万(D1组)、12万(D2组)、14万(D3组)、16万(D4组)和18万(D5组)株/hm^(2)的种植密度,测定不同种植密度下大力士的农艺性状、产量及营养品质。结果显示,D1组、D2组和D3组的茎粗显著高于D5组(P<0.05),D1组和D2组的株高显著低于D4组和D5组(P<0.05)。D1组和D2组的倒伏率显著低于D4组和D5组(P<0.05),D1组、D2组和D3组的病株率显著低于D4组和D5组(P<0.05)。D3组和D4组的鲜草产量显著高于D1组(P<0.05),D1组干草产量显著低于其他组(P<0.05)。D1组和D2组饲用甜高粱含糖量显著高于D5组(P<0.05),D3组中性洗涤纤维含量显著低于D1组和D4组(P<0.05)。研究表明,当种植密度为14万株/hm^(2)时,饲用甜高粱的农艺性状、产量及营养品质较好。
This experiment aimed to study the effects of different planting densities on the agronomic traits,yield,and nutritional quality of forage sweet sorghum,to determine the optimal planting density of forage sweet sorghum.With forage sweet sorghum Hercules as the experimental material,100000(group D1),120000(group D2),140000(group D3),160000(group D4)and 180000(group D5)plants/hm^(2) were set up to analyze and detect the differences in agronomic traits,yield and nutritional quality of Hercules at different planting densities.The results showed that the stem diameter of fed sweet sorghum in groups D1,D2 and D3 was significantly higher than that in group D5(P<0.05),and the plant heigh in groups D1 and D2 was significantly lower than that in groups D4 and D5(P<0.05).The lodging rate in groups D1 and D2 was significantly lower than that in groups D4 and D5(P<0.05),and the plant disease rate in groups D1,D2 and D3 was significantly lower than that in groups D4 and D5(P<0.05).The fresh grass yield in groups D3 and D4 was significantly higher than that of group D1(P<0.05),and the hay yield of group D1 was significantly lower than that of other groups(P<0.05).The sugar content of forage sweet sorghum in groups D1 and D2 was significantly higher than that in D5 group(P<0.05),and the neutral detergent fiber content in group D3 was significantly lower than that in groups D1 and D4(P<0.05).The results show that the agronomic traits,yield,and nutritional quality of forage sweet sorghum are better when the planting density was 140000 plants/hm^(2).
作者
汪昱含
张国良
WANG Yuhan;ZHANG Guoliang
出处
《饲料研究》
北大核心
2025年第10期131-134,共4页
Feed Research
关键词
种植密度
饲用甜高粱
农艺性状
产量
营养品质
planting density
forage sweet sorghum
agronomic traits
yield
nutritional quality
作者简介
第一作者:汪昱含,硕士,研究方向为植物学、动物营养。
