CAJ | 학술논문

在岷江上游干旱河谷岷江柏木幼林地经过连续4 a利用雨季种植绿肥压青,增加土壤肥力,提高水分利用率,促进幼树生长研究。结果表明：（1）种植红豆草的土壤0～40 cm含水量旱季增加3.68 g·kg-1,0～20 cm土壤容重降低0.07 g·cm-3;种植草木樨土壤0～40 cm含水量旱季增加4.18 g·kg-1,0～20 cm土壤容重降低0.05 g·cm-3;种植沙打旺土壤0～40 cm含水量增加2.46 g.kg-1,0～20 cm土壤容重降低0.18 g·cm-3。（2）种植绿肥压青,土壤有机质增加0.37 g·kg-1～0.55 g·kg-1,土壤CaCO3含量下降0.66 g·kg-1～1.36 g·kg-1,有效氮增加4.5 mg·kg-1～18.5 mg·kg-1,有效磷含量增加1.0～3.46 mg·kg-1,CEC比对照增加0.54～0.58mg.100g-1。（3）种植红豆草、草木樨、沙打旺绿肥压青对岷江柏木树高、地径生长有显著的促进作用,尤其种植红豆草的岷江柏木幼树生长最好,高、径生长为对照的1.7倍和1.6倍。
재민강상유간한하곡민강백목유임지경과련속4 a이용우계충식록비압청,증가토양비력,제고수분이용솔,촉진유수생장연구。결과표명：（1）충식홍두초적토양0～40 cm함수량한계증가3.68 g·kg-1,0～20 cm토양용중강저0.07 g·cm-3;충식초목서토양0～40 cm함수량한계증가4.18 g·kg-1,0～20 cm토양용중강저0.05 g·cm-3;충식사타왕토양0～40 cm함수량증가2.46 g.kg-1,0～20 cm토양용중강저0.18 g·cm-3。（2）충식록비압청,토양유궤질증가0.37 g·kg-1～0.55 g·kg-1,토양CaCO3함량하강0.66 g·kg-1～1.36 g·kg-1,유효담증가4.5 mg·kg-1～18.5 mg·kg-1,유효린함량증가1.0～3.46 mg·kg-1,CEC비대조증가0.54～0.58mg.100g-1。（3）충식홍두초、초목서、사타왕록비압청대민강백목수고、지경생장유현저적촉진작용,우기충식홍두초적민강백목유수생장최호,고、경생장위대조적1.7배화1.6배。
The experiments on planting of green manure were carried out in the arid valleys of the upper reachers of the Minjiang River in the rainy seasons of the successive 4 years so as to fertilize soil,increase moisture utilization and promote the growth of the young growths of Cupressus chengiana S.y.Hu.The results are as follows.(1) By planting of Onobrychis viciaefolia,soil water in 0~40 cm in the dry season increases by 3.68 g·kg-1;weight volume of soil in 0~20 cm decreases 0.07 g·cm-3 as compared with control.By planting of Melilotus officonahs,soil water in 0~40 cm in the dry season increases by 4.18 g·kg-1;weight volume of soil in 0~20 cm decreases 0.05 g·cm-3 as compared with control.By planting of Astragalus adsurgens,soil water in 0~40 cm in the dry season increases by 2.46 g·kg-1;weight volume of soil in 0~20 cm decreases 0.18 g·cm-3 as compared with control.(2)Through planting of green manure,organic matter of soil increases by 0.37 g·kg-1~0.55 g·kg-1;content of CaCo3 decreases by 0.66 g·kg-1~1.36 g·kg-1;available N and P increase by 4.5 mg·kg-1~18.5 mg·kg-1 and 1.0 mg·kg-1~1.4 mg·kg-1 respectively;CEC increases 0.54 mg·100 g-1~0.58 mg·100 g-1 as compared with control.(3) Planting of Onobrychis viciaefolia,Melilotus officinalis and Astragalus adsurgens under the plantations of Platycladus oriendalis can significantly increase their growth in the height and basal diameter.The growth in the height and basal diameter for Cupressus chengiana S.y.Hu is 1.6~1.7 times higher as compared with control.