摘要
针对三江源区气候相对干旱、水分不足、土壤贫瘠的实际情况,选用羊粪和粘土分别作为丸粒化种子的填充剂和粘合剂,制作丸粒化牧草种子,并且对丸粒的抗压强度、崩解时间、保水时间以及丸粒种子的发芽率进行了测定,结果表明:在牧草种子丸粒化中,羊粪和粘土的不同配比对种子的发芽、丸粒的抗压强度、崩解时间、保水时间以及丸粒种子的发芽率均有一定的影响。从4个处理中A1(25%∶75%);A2(30%∶70%);A3(35%∶65%);A4(40%∶60%)可以看出,随着粘土的比例下降,丸粒的抗压强度下降;增加羊粪的比例,减少粘土的比例,会缩短丸粒的崩解时间;粘土含量高,保水能力强,羊粪含量高,保水能力差;四种配比的处理之间的发芽率存在极显著差异(P<0.01)。根据种子丸粒化材料的理化特性、成本价格、取材难易程度等进行前期的筛选,结合丸粒化后抗压度、崩解度、成模性等指标筛选出抗压度合适(成粒后破损率在2%以下)、崩解度适宜(种子萌芽时能够崩解)、丸粒化种子室内发芽率高的原则和目标,我们筛选A3羊粪和粘土的比例为35%∶65%为最优配。
Pelleted-seed of forage was made by choosing different proportion ratio of sheep manure and clay as additives,and anti-press strength,collapse time,waterretention time and germination rate of pelleted-seed were tested as well.The results showed that different ratio of sheep manure and clay had some effect on the anti-press strength,collapse time,water-retention time and germination rate of pelleted-seed of forage.The anti-press of pelleted-seed turned to lower with the comparison of clay descended.Collapse time was shortened with increasing the component of sheep manure and decreasing that of clay.Seed could keep more water with higher rate of clay while keep less water with higher rate of sheep manure.Germination rate of pelleted-seed was significant（P〈0.01） with different treatments.Treatment A3（35%∶65%）is the best ratio for pelleted-seed of forage according to the synthesis characterictics.
出处
《干旱地区农业研究》
CSCD
北大核心
2011年第5期55-58,共4页
Agricultural Research in the Arid Areas
基金
国家自然基金项目(30760160)
关键词
羊粪和粘土
不同配比
丸粒化种子
sheep manure and clay
different ratio
pelleted-seed
