兰引Ⅲ号结缕草种子高产栽培措施  

Influence of different cultivation practices on seed production of ‘Lanyin Ⅲ' Zoysiagrass

作　　者：刘颖[1] 李丽涛[1] 张巨明[1] 

机构地区：[1]华南农业大学农学院,广东广州510642

出　　处：《草业科学》2014年第2期250-255,共6页Pratacultural Science

基　　金：广东省科技计划项目(2012B020302002)

摘　　要：兰引Ⅲ号结缕草(Zoysia japonica cv.Lanyin No.Ⅲ)是目前华南地区运动场应用最广泛的优良草坪草,但存在种子产量低、结实率差等缺点,因而限制了其大范围推广应用。本研究旨在通过研究氮肥、修剪以及行距3个管理措施对兰引Ⅲ号结缕草种子产量的影响,探讨提高其种子产量的栽培管理措施,从而为种子生产的可行性提供依据。测定的指标有枝条密度、穗密度、穗长、小穗粒数、种子产量、种子千粒重、种子结实率和种子发芽率。结果表明,3种管理措施均对兰引Ⅲ号结缕草的种子产量有一定影响,其中行距的选择对种子产量的影响最大。综合比较后认为,兰引Ⅲ号结缕草种子生产的最佳管理措施为:50cm行距、5月初修剪与营养期氮肥平均分3次施入,施肥总量折合纯N为10g·m-2。‘Lanyin Ⅲ’ Zoysiagrass （Zoysia japonica cv. Lanyin No.Ⅲ） has widely application on sports turfs in south China. However, it has been limited for further application in larger market due to lower seed yields and poor seed setting rate. This study was aimed to increase seed production of ‘Lanyin Ⅲ’ Zoysiagrass through cultivation practices, such as mowing frequency and time, fertilization and planting row-spacing. Branches density, spike density, ear length, grain number per ear, seed yield, weight of 1 000 seeds, seed setting rate and germination percentage of seed were evaluated during this experiment. The results showed that these three cultivation practices had impacts on seed production of ‘Lanyin Ⅲ’ Zoysiagrass and the effects of row-spacing were biggest among them. The optimal cultivation practices for seed production of ‘Lanyin Ⅲ’ Zoysiagrass were 50 cm row-spacing, mowing one time in May and fertilization of N fertilizer three times during the growing season. The results will provide theoretical basis for the feasibility of seed production of ‘Lanyin Ⅲ’ Zoysiagrass.

关 键 词：兰引Ⅲ号结缕草 种子生产 田间管理 

分 类 号：S688.4[农业科学—观赏园艺]