摘要
为山黧豆的培肥及景观效果的提升提供理论依据和技术支撑,以山黧豆为试验材料,采用田间试验方法,研究3种不同种植密度(30 kg/hm^2、45 kg/hm^2,60 kg/hm^2)对山黧豆培肥土壤及提升景观效果的影响。结果表明:种植密度显著影响山黧豆培肥土壤效果,盛花期鲜草产量、地上部分干物质及氮磷钾养分积累量、碳积累量和固碳量均随种植密度的增大呈下降趋势;种植密度显著影响山黧豆观赏效果,种植密度为45 kg/hm^2时,盛花期花朵数和花面积均最大,分别为986.67万朵/hm^2和1279.84 m 2/hm^2,观赏效果最好。山黧豆用于培肥土壤及观花提升景观的适宜种植密度分别为30 kg/hm^2和45 kg/hm^2。
The effects of three different planting densities(30 kg/hm^2,45 kg/hm^2 and 60 kg/hm^2)on fertilizing soil and landscape improvement of Lathyrus sativus are studied by using a field test to provide the theoretical basis and technological support for improving fertilization and landscape effect of L.sativus.Result:The planting density of L.sativus has significant effect on fertilizing soil effect.The fresh grass yield,dry matters,N,P,K accumulation,and C accumulation and fixed carbon content in aboveground part of L.sativus at full-bloom stage show a declining trend with increase of planting density.The planting density affects ornamental effect significantly.When the planting density is 45 kg/hm^2,the flower number and area of L.sativus at full-bloom stage reach the maximum,respectively 986.67×10^4/hm^2 and 1279.84 m 2/hm^2,and the ornamental effect is the best.The suitable planting density of L.sativus for fertilizing soil and landscape is 30 kg/hm^2 and 45 kg/hm^2 separately.
作者
况胜剑
姚单君
冉斌
张爱华
张钦
王文华
KUANG Shengjian;YAO Danjun;RAN Bin;ZHANG Aihua;ZHANG Qin;WANG Wenhua(Guizhou Institute of Soil and Fertilizer/Guizhou Institute of Agricultural Resources and Environment,GAAS/Guizhou Observation Experimental Station of Arable Land Conservation and Agricultural Environmental Sciences,Ministry of Agriculture,Guiyang,Guizhou 550006;Guizhou University,Guiyang,Guizhou 550025,China)
出处
《贵州农业科学》
CAS
2020年第7期34-37,共4页
Guizhou Agricultural Sciences
基金
贵州省科技支撑计划项目“李、梨园绿肥两茬免耕周年绿色覆盖技术研究与示范”[黔科合支撑(2020)1Y026],“山地观光农业的景观绿肥品种选配技术研究与示范”[黔科合(2016)支撑2837]
国家绿肥产业技术体系贵阳综合试验站(CARS-22)。
关键词
山黧豆
种植密度
养分积累
固碳
景观效果
Lathyrus sativus
planting density
nutrient accumulation
fixed carbon
landscape
