摘要
于1986～1987两年,在吉林省西部前郭,大安县研究了飞机草原施肥问题。结果表明,在缺氮少磷、锌的石灰性草原土壤上,飞喷尿素、硫酸锌溶液能明显地促进牧草生育。株高、叶/茎比、鲜草重、干草重增加,草地的覆盖度提高。喷施尿素溶液亩增干草17.8～45公斤,增产幅度为13.6％～33.4％;喷硫酸锌溶液亩增干草4.8～24公斤,增产幅度4.7％～27％。喷施尿素硫酸锌会提高牧草的全氮量,增加粗蛋白,有利于草质的改善。文中并对牧草的P、K、Ca、Mg、Zn含量以及K/Ca+Mg比值同苏联标本进行了比较和评价。最后认定采用飞机在大面积草地上进行叶面喷施肥液,是可行的增产措施。
The effect of spraying urea and zinc sulphate solution by airplane upon the natural and tame pastureland on the yield and quality of pasture herbage was studied form 1986 to 1987 in the west of Jinlin province. The results showed that the yield of pasture herbage was increased by 13.6％～33.4％ and 4.7％～27％ by spraying urea and ZnSO_4 solution, respectively. The contents of N, P, K, Ca, Mg, Zn and the ratio of K/(Ca+Mg) were also evaluated.
出处
《草业科学》
CAS
CSCD
北大核心
1993年第2期24-27,30,共5页
Pratacultural Science
关键词
牧草
施肥
产量
矿物质
Aerofertilization
mineral nutrients
pasture herbage
