防护林科技
防護林科技
방호림과기
PROTECTION FOREST SCIENCE AND TECHNOLOGY
2012年
1期
22-24,38
,共4页
沙化土地%菊芋种植%土壤理化性质
沙化土地%菊芋種植%土壤理化性質
사화토지%국우충식%토양이화성질
desertification land%planting Helianthus tuberosus%soil physical ＆ chemical properties
在地处干旱半干旱地区的沙化土地种植菊芋,不仅能保持水土和防风固沙,而且还可以改善土壤理化性质,从而提高土壤的生产力。试验结果表明,种植菊芋3年,0～202、0～404、0～60和60～80 cm土壤含水量分别比1～2年低5.3%1、3.1%9、.4%和14.5%;种植菊芋2年和3年,0～20、20～40、40～60cm土壤全盐量分别下降了3.78%和12.78%、16.84%和22.46%1、1.24%和20.73%,土壤容重0～20、20～40、40～60 cm分别下降了5.04%和7.35%、4.11%和7.04%、5.67%和7.19%,土壤孔隙度平均增高了4.03%5、.02%和5.1%;菊芋种植土壤中0,～20 cm范围内1～0.5 mm、0.5～0.1 mm的粒径种植3年的分别要比1年的下降7.43%和3.67%;而粒径0.1～0.05 mm的增加5.84%;土壤有机质0～202、0～40 cm种植3年的分别比1年的高19.8%和29.7%。
在地處榦旱半榦旱地區的沙化土地種植菊芋,不僅能保持水土和防風固沙,而且還可以改善土壤理化性質,從而提高土壤的生產力。試驗結果錶明,種植菊芋3年,0～202、0～404、0～60和60～80 cm土壤含水量分彆比1～2年低5.3%1、3.1%9、.4%和14.5%;種植菊芋2年和3年,0～20、20～40、40～60cm土壤全鹽量分彆下降瞭3.78%和12.78%、16.84%和22.46%1、1.24%和20.73%,土壤容重0～20、20～40、40～60 cm分彆下降瞭5.04%和7.35%、4.11%和7.04%、5.67%和7.19%,土壤孔隙度平均增高瞭4.03%5、.02%和5.1%;菊芋種植土壤中0,～20 cm範圍內1～0.5 mm、0.5～0.1 mm的粒徑種植3年的分彆要比1年的下降7.43%和3.67%;而粒徑0.1～0.05 mm的增加5.84%;土壤有機質0～202、0～40 cm種植3年的分彆比1年的高19.8%和29.7%。
재지처간한반간한지구적사화토지충식국우,불부능보지수토화방풍고사,이차환가이개선토양이화성질,종이제고토양적생산력。시험결과표명,충식국우3년,0～202、0～404、0～60화60～80 cm토양함수량분별비1～2년저5.3%1、3.1%9、.4%화14.5%;충식국우2년화3년,0～20、20～40、40～60cm토양전염량분별하강료3.78%화12.78%、16.84%화22.46%1、1.24%화20.73%,토양용중0～20、20～40、40～60 cm분별하강료5.04%화7.35%、4.11%화7.04%、5.67%화7.19%,토양공극도평균증고료4.03%5、.02%화5.1%;국우충식토양중0,～20 cm범위내1～0.5 mm、0.5～0.1 mm적립경충식3년적분별요비1년적하강7.43%화3.67%;이립경0.1～0.05 mm적증가5.84%;토양유궤질0～202、0～40 cm충식3년적분별비1년적고19.8%화29.7%。
The cultivation of H.tuberosus on desertification land in arid semiarid areas,not only can conserve water soil and defend wind consolidate sand,but also can improve the soil physical chemical properties,so as to improve the productivity of the soil.Result shows that soil moisture of soil layer with 0-20,20-40,40-60,60-80 cm while planting H.tuberosus for 3 years are 5.3%,13.1%,9.4% 14.5% respectively lower than that for 1-2 years;total salt of soil with soil layer of 0-20,20-40,40-60 cm which planted H.tuberosus for 2 or 3 years decrease 3.78% 12.78%,16.84% 22.46%,11.24% 20.73%,respectively;soil bulk density of soil layer with 0-20、20-40、40-60 cm decrease 5.04% 7.35%,4.11% 7.04%,5.67% 7.19%,respectively;soil porosity increased averagely by 4.03%,5.02% 5.1%,respectively;in the soil which were planted H.tuberosus for 3 year,soil particle size with 1-0.5 0.5-0.1 mm with soil layer of 0-20 cm decrease by 7.43% 3.67% respectively than that for 1 year;soil particle size with 0.1-0.05 mm for 3 years increases by 5.84% than that for 1 year;soil organic matter with soil layer of 0-20,20-40 cm for 3 years are 19.8% 29.7% higher than that for 1 year.
