CAJ | 학술논문

采用盆栽试验,研究了翻压二月兰作绿肥对玉米生长、养分吸收及土壤肥力的影响。试验设 CK (不施肥)、不同翻压量绿肥(50%G、G)、单施全量化肥(F)和绿肥与化肥配施(G+F)5个处理。结果表明,绿肥有一定的养分供应能力,翻压绿肥后玉米生物量、籽粒产量、养分吸收量显著提高,并随绿肥翻压量增加而增加。单翻压绿肥能满足玉米拔节期以前的生长需求,50%G和G处理玉米在拔节期的生物量、氮磷钾吸收量均与F及G+F处理相似。绿肥化肥配施可进一步促进玉米养分吸收,提高玉米产量,G+F处理成熟期玉米整株氮、磷、钾吸收量比F处理分别增加了10.8%,28.1%,45.8%,籽粒产量提高了9.1%。绿肥有促进玉米根系生长及提高磷、钾养分吸收能力的效果,单施绿肥以及绿肥与化肥配施后,玉米根系生物量、根冠比提高,对磷钾的相对吸收量明显高于对氮的相对吸收量。仅翻压绿肥后种植玉米对土壤无机氮和速效磷有明显的耗竭,绿肥化肥配施后土壤无机氮、速效磷、速效钾显著提高,说明绿肥化肥配施可有效改善土壤养分状况。
채용분재시험,연구료번압이월란작록비대옥미생장、양분흡수급토양비력적영향。시험설 CK (불시비)、불동번압량록비(50%G、G)、단시전양화비(F)화록비여화비배시(G+F)5개처리。결과표명,록비유일정적양분공응능력,번압록비후옥미생물량、자립산량、양분흡수량현저제고,병수록비번압량증가이증가。단번압록비능만족옥미발절기이전적생장수구,50%G화G처리옥미재발절기적생물량、담린갑흡수량균여F급G+F처리상사。록비화비배시가진일보촉진옥미양분흡수,제고옥미산량,G+F처리성숙기옥미정주담、린、갑흡수량비F처리분별증가료10.8%,28.1%,45.8%,자립산량제고료9.1%。록비유촉진옥미근계생장급제고린、갑양분흡수능력적효과,단시록비이급록비여화비배시후,옥미근계생물량、근관비제고,대린갑적상대흡수량명현고우대담적상대흡수량。부번압록비후충식옥미대토양무궤담화속효린유명현적모갈,록비화비배시후토양무궤담、속효린、속효갑현저제고,설명록비화비배시가유효개선토양양분상황。
A pot experiment was conducted to investigate the effects of incorporation February Orchid,applied as green manure,on dry matter accumulation and nutrient uptake in maize and soil nutrient status. There were five treatments,control,two green manure incorporation rates (50%G and G),conventional fertilizer application rate ( F) and green manure combined with fertilizer ( G+F) in the experiment. The results showed that green manure application could supply a certain amount of nutrients. The biomass,grain yield and nutrient uptake of maize were significantly increased after green manure application,and were enhanced with the application rates as well. The bi-omass and N,P,K absorption in the treatments of 50%G and G were similar to those in F and G+F at jointing stage,indicating that sole green manure applications could satisfy the normal growth of maize before jointing. Com-A pot experiment was conducted to investigate the effects of incorporation February Orchid,applied as green manure,on dry matter accumulation and nutrient uptake in maize and soil nutrient status. There were five treatments,control,two green manure incorporation rates (50%G and G),conventional fertilizer application rate ( F) and green manure combined with fertilizer ( G+F) in the experiment. The results showed that green manure application could supply a certain amount of nutrients. The biomass,grain yield and nutrient uptake of maize were significantly increased after green manure application,and were enhanced with the application rates as well. The bi-omass and N,P,K absorption in the treatments of 50%G and G were similar to those in F and G+F at jointing stage,indicating that sole green manure applications could satisfy the normal growth of maize before jointing. Com-pared with the F treatment,green manure combined with fertilizer application could further benefit the nutrient up-take and the grain yield of maize,i. e. ,the G+F treatment increased the N,P,K uptake of maize at maturity by 10. 8%,28. 1%,45. 8%, respectively, and increased the yield by 9. 1%. Green manure application might have effects on the root growth and P,K uptake of maize,resulting in that root biomasses and root to shoot dry weight rati-os were increased and relative P and K absorption rates were higher than N absorption rate in all treatments incorpo-rated with green manure. Treatments with sole green manure (50%G and G) depleted the soil Nmin and Olsen-P, while the soil Nmin,Olsen-P,and NH4OAc-K were enhanced remarkably in the G+F treatment,showing that green manure combined with fertilizer application could effectively improve the soil nutrient status.