摘要
在苇状羊茅草地,全年分3次表施7.5～30kg 亩尿素,刈草4次,每公斤尿素可收获鲜草43.64～48.28kg,3～5月增产幅度最大.孕穗期刈草后表施尿素5kg/亩和10kg/亩,对再生草的有效作用期分别为2～3月和3～4月。亩施10kg 以上尿素,可明显抑制热性杂草的发生和生长。硫酸钾复合肥和过磷酸钙有利于翌年种子产量的提高。本试验仅为一年资料。
When urea 7.5～30kg/mu was broadcasted in the pasture of tall fescue,43.64～48.28kg of fresh forage could be gained with 1kg urea.The main grow-ing season coincided in the period from March to May.When 5kg/mu and10kg/mu urea were broadcasted after cutting in heading stage,the effects onthe regrowth were in the periods from February to March and from March toApril respectively.When broadcasting urea more than 10kg/mu,the occuran-ce and growth of tropical weeds could be inhibited.K_2SO_4 compound fertilizerand superphosphate could increase the seed yield in the next year.
出处
《江西农业大学学报》
CAS
CSCD
1991年第6期225-229,共5页
Acta Agriculturae Universitatis Jiangxiensis
关键词
法恩苇状羊茅
表施
“Fawn”tall fescue
broadcasting
