寒旱区不同覆盖措施对草坪草萌芽和生长的影响

Effects of Different Coverage Measures on Germination and Growth of Lawn Grass in Cold and Dry Area

为了提高寒旱区草坪草发芽率和生长量,播种后地表覆盖塑料薄膜、无纺布和遮阳网,对比研究了不同覆盖措施对地表空气温、湿度和土壤温、湿度的影响。结果表明:干旱半干旱区草坪草早熟禾播种后地表覆盖塑料薄膜、无纺布和遮阳网均提高了草种发芽率、保存率和幼苗生长量,不同覆盖措施中无纺布覆盖的发芽率、保存率和幼苗生长量指标叶片数、株高、根系数和根长均最高,建议在生产中首先选用。

In order to improve the germination percentage and growth of lawn grass in cold and dry areas, the surface was covered with plastic film, non-woven fabric and sunshade net after sowing.The effects of different covering measures on surface air temperature and humidity and soil temperature and humidity were compared.The results showed that plastic film, non-woven fabric and sunshade net were covered on the ground surface of Poa annua L.in arid and semi-arid areas after sowing, which improved the germination percentage, preservation rate and seedling growth of grass seeds.The non-woven fabric coverage had the highest germination percentage, preservation rate and seedling growth index leaf number, plant height, root coefficient and root length in different coverage measures.It was suggested that the non-woven fabric coverage should be selected first in production.