许多景观草在美国农业部植物抗寒区4b的长期抗寒试验中存活下来

IF 1 4区农林科学 Q3 HORTICULTURE

Horttechnology Pub Date : 2023-08-01 DOI:10.21273/horttech05247-23

Mary Hockenberry Meyer, B. Miller

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引用次数: 0

摘要

1987年夏天，美国明尼苏达州尚哈森的明尼苏达大学景观植物园开始了一项长期的景观草耐寒性研究[美国农业部植物耐寒区（USDA PHZ）4b，-20至-25°F]。该地区的平均生长季节为158天（无霜），夏季温度为79.9°F，冬季温度为10.4°F。在35年的时间里，共种植了392种来自禾本科和莎草科的不同植物，以评估其冬季存活率、景观价值、开花和害虫抗性。大多数植物（n=271，69%）存活至少4年，186（47%）存活10年，81（21%）存活20年，29（7%）存活35年。68种植物（17%）被认为在该地区不耐寒（美国农业部PHZ 4b），53种植物的耐寒性评级数据不足。讨论了维护的变化以及草本植物长期试验中遇到的挑战。

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Many Landscape Grasses Survive Long-term Hardiness Trials in United States Department of Agriculture Plant Hardiness Zone 4b

A long-term, landscape grass hardiness study was initiated in Summer 1987 at the University of Minnesota Landscape Arboretum in Chanhassen, MN, USA [United States Department of Agriculture Plant Hardiness Zone (USDA PHZ) 4b, –20 to –25 °F]. This location averages a 158-day growing season (frost free), summer temperatures of 79.9 °F, and winter temperatures of 10.4 °F. Over 35 years, 392 different kinds of plants from the grass (Poaceae) and sedge (Cyperaceae) families were planted to evaluate winter survival, landscape value, flowering, and pest resistance. Most plants (n = 271, 69%) survived at least 4 years, 186 (47%) survived 10 years, 81 (21%) survived 20 years, and 29 (7%) survived 35 years. Sixty-eight plants (17%) were deemed not winter hardy in this location (USDA PHZ 4b), and 53 are listed with insufficient data for a hardiness rating. Changes in maintenance as well as challenges encountered with long-term trials of herbaceous plants are discussed.

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来源期刊

Horttechnology 农林科学-园艺

CiteScore

2.30

自引率

10.00%

发文量

审稿时长

3 months

期刊介绍： HortTechnology serves as the primary outreach publication of the American Society for Horticultural Science. Its mission is to provide science-based information to professional horticulturists, practitioners, and educators; promote and encourage an interchange of ideas among scientists, educators, and professionals working in horticulture; and provide an opportunity for peer review of practical horticultural information.