东北林业大学学报
東北林業大學學報
동북임업대학학보
JOURNAL OF NORTHEAST FORESTRY UNIVERSITY
2014年
8期
52-56,78
,共6页
陈平%孟平%张劲松%何春霞%贾长荣%李建中
陳平%孟平%張勁鬆%何春霞%賈長榮%李建中
진평%맹평%장경송%하춘하%가장영%리건중
复合系统%稳定碳同位素%树干液流%水分利用效率%耗水量
複閤繫統%穩定碳同位素%樹榦液流%水分利用效率%耗水量
복합계통%은정탄동위소%수간액류%수분이용효솔%모수량
Intercropping system%Stable carbon isotope%Sap flow%Water use efficiency%Water use
采用稳定碳同位素技术和树干液流法对华北低丘山区3 m×8 m核桃-菘蓝/决明子复合模式不同生长时期的水分利用效率、耗水量和产量等相关指标进行了研究。结果表明,复合模式的土壤含水量分别比单作核桃和单作药用植物高11.86%和21.06%;间作菘蓝水分利用效率在苗期高于单作菘蓝,在其它时期均小于单作菘蓝。间作决明子水分利用效率在各个时期均小于单作决明子;在复合系统中,单位土地面积上核桃与菘蓝的耗水比例是0.70∶1,核桃与决明子的耗水比例是1.79∶1。单作系统耗水量均高于间作系统,其中,单作核桃耗水量比间作核桃高10.90%,单作菘蓝和决明子耗水量分别是间作模式的1.65倍和2.17倍;单位面积土地上复合系统的产量均小于单作系统,而总收入分别是单作核桃和单作药用植物的1.47倍和1.24倍;复合模式的水分产值效率为17.84元? t-1? hm-2,比单作菘蓝和决明子的高24.32%;复合模式的产量土地当量比为1.98,较单作模式增产率达98%。总体上,核桃-菘蓝/决明子复合模式比单作系统耗水量少,水分利用效率提高、水资源获得高效利用,同时具备生产优势和经济优势,该模式进一步完善后可适当推广。研究结果对进一步丰富复合农林业水分生态理论,促进相关学科的发展,具有重要的指导意义。
採用穩定碳同位素技術和樹榦液流法對華北低丘山區3 m×8 m覈桃-菘藍/決明子複閤模式不同生長時期的水分利用效率、耗水量和產量等相關指標進行瞭研究。結果錶明,複閤模式的土壤含水量分彆比單作覈桃和單作藥用植物高11.86%和21.06%;間作菘藍水分利用效率在苗期高于單作菘藍,在其它時期均小于單作菘藍。間作決明子水分利用效率在各箇時期均小于單作決明子;在複閤繫統中,單位土地麵積上覈桃與菘藍的耗水比例是0.70∶1,覈桃與決明子的耗水比例是1.79∶1。單作繫統耗水量均高于間作繫統,其中,單作覈桃耗水量比間作覈桃高10.90%,單作菘藍和決明子耗水量分彆是間作模式的1.65倍和2.17倍;單位麵積土地上複閤繫統的產量均小于單作繫統,而總收入分彆是單作覈桃和單作藥用植物的1.47倍和1.24倍;複閤模式的水分產值效率為17.84元? t-1? hm-2,比單作菘藍和決明子的高24.32%;複閤模式的產量土地噹量比為1.98,較單作模式增產率達98%。總體上,覈桃-菘藍/決明子複閤模式比單作繫統耗水量少,水分利用效率提高、水資源穫得高效利用,同時具備生產優勢和經濟優勢,該模式進一步完善後可適噹推廣。研究結果對進一步豐富複閤農林業水分生態理論,促進相關學科的髮展,具有重要的指導意義。
채용은정탄동위소기술화수간액류법대화북저구산구3 m×8 m핵도-숭람/결명자복합모식불동생장시기적수분이용효솔、모수량화산량등상관지표진행료연구。결과표명,복합모식적토양함수량분별비단작핵도화단작약용식물고11.86%화21.06%;간작숭람수분이용효솔재묘기고우단작숭람,재기타시기균소우단작숭람。간작결명자수분이용효솔재각개시기균소우단작결명자;재복합계통중,단위토지면적상핵도여숭람적모수비례시0.70∶1,핵도여결명자적모수비례시1.79∶1。단작계통모수량균고우간작계통,기중,단작핵도모수량비간작핵도고10.90%,단작숭람화결명자모수량분별시간작모식적1.65배화2.17배;단위면적토지상복합계통적산량균소우단작계통,이총수입분별시단작핵도화단작약용식물적1.47배화1.24배;복합모식적수분산치효솔위17.84원? t-1? hm-2,비단작숭람화결명자적고24.32%;복합모식적산량토지당량비위1.98,교단작모식증산솔체98%。총체상,핵도-숭람/결명자복합모식비단작계통모수량소,수분이용효솔제고、수자원획득고효이용,동시구비생산우세화경제우세,해모식진일보완선후가괄당추엄。연구결과대진일보봉부복합농임업수분생태이론,촉진상관학과적발전,구유중요적지도의의。
We studied water use efficiency , water use and yield of 3 m×8 m walnut ( Juglans regia L.)-woad ( Isatis indigotica F.)/cassia ( Cassia obtusifolia L.) intercropping system and monoculture system at different growth stages by stable carbon isotope technique and sap flow method in the low hilly area of North China .Soil water content of intercropping system were 11.86%and 21.06%greater, respectively, than that of monoculture walnut and medicinal plant system at each stage .Wa-ter use efficiency of the intercropping woad system at seedling stage was higher than that of monoculture system , and lower than that of monoculture system at later stages , and water use efficiency of the cassia in intercropping system was lower than that of monoculture system at each growth stage .In the walnut-woad intercropping , the ratio of water used by walnut and woad was 0.7∶1, and the ratio of water used by walnut and cassia was 1.79∶1.Water use of the monoculture system were higher than that of intercropping system , among them, water use of monoculture walnut was 10.90%higher than that of the intercropping walnut , water use of monoculture woad/cassia were 1.65 and 2.17 times, respectively, than that of in-tercropping woad/cassia.Although, the yield of each component in the intercropping system was less than the sole system , the total income of the agroforestry was higher than that of the sole systems , the yield in the intercropping system were 1.47 and 1.24 times than that in the sole walnut system and medicinal plant , respectively .Water value efficiency of output of in-tercropping system was 17.84 yuan/( t? hm2 ) , 24.32%higher than that of the monoculture woad/cassia.Land equivalent ratio of intercropping system was 1.98, and the yield increasing rate was 98%compared with the monoculture system .Gen-erally, walnut-woad/cassia composite pattern takes less water than that of monoculture system , and improved water use ef-ficiency, at the same time they had advantages on the production and economical .The walnut-woad/cassia intercropping system with further perfect could be properly extended .