Establishing Zoysia japonica from Sprigs: Effects of Topdressing and Nitrogen Fertility
Establishing Zoysia japonica from Sprigs: Effects of Topdressing and Nitrogen Fertility
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从小枝建立结缕草：追肥和氮肥的影响
DOI：
10.21273/hortsci.36.2.377
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
J. Boyd
中科院分区：
文献类型：
--
作者：
M. Richardson;J. Boyd
结缕草（Zoysia japonica Steud.）在高尔夫球场和运动场的生长速度慢，生长周期长，因此用小枝种植结缕草通常是不切实际的。在阿肯色州的两个不同地点进行了一项研究，以评估土壤追肥和种后肥力对植生结缕草的影响。每个地点都按照标准方法种植，使用新鲜收获的小枝（18米3 /公顷），用1.0厘米的原生土壤进行追肥，或者不进行追肥。从建立后立即开始，每月以0、1.25、2.50、3.75或5.0 g·m -2的尿素施用N。整个生长季节监测覆盖率，种植后120天测定植物组织元素分析。在这两个地点，与传统的种植方式相比，用原生土壤对枝条进行追肥显著提高了树桩的成活率，这可能是由于幼苗存活率的提高。尽管0 g·m -2施氮率略低于其他施氮率，但在建立期间施氮对建立的总体影响很小或没有影响。本研究表明，提高结缕草幼苗成活率的方法比增加肥力更重要。
Establishment of zoysiagrass (Zoysia japonica Steud.) from sprigs is often impractical for golf courses and sports fields because of the slow growth rate of the species and subsequent long establishment period. A study was conducted at two different sites in Arkansas to evaluate the effects of soil topdressing and post-plant fertility rates on establishment of zoysiagrass from vegetative sprigs. Each site was planted according to standard methods using freshly-harvested sprigs (18 m 3 /ha) and either top dressed with 1.0 cm of native soil or maintained without topdressing. Beginning immediately after establishment, N was applied monthly at rates of 0, 1.25, 2.50, 3.75, or 5.0 g·m -2 as urea. Rate of cover was monitored throughout the growing season and elemental analysis of plant tissues was determined 120 days after planting. Topdressing the sprigs with native soil significantly improved establishment compared to traditional sprigging at both sites, presumably because of enhanced sprig survival. Applications of N during the establish- ment period had little or no overall effect on establishment, although the 0 g·m -2 rate was slightly inferior to all other rates. This study indicates that methods that enhance sprig survival are more important than added fertility for the rapid establishment of zoysiagrass sprigs.