Yang, Shiming

Zeng, Yanqiong

English

University of Kentucky

University of Kentucky UKnowledge International Grassland Congress Proceedings 21st International Grassland Congress / 8th International Rangeland Congress Compound System and Benefit Analysis about Legumes Forage Intercrop with Prickly Ash in Linxia Yanqiong Zeng Beijing Forestry University, China Shiming Yang Forest Seeding Work Station, China Follow this and additional works at: https://uknowledge.uky.edu/igc  Part of the Plant Sciences Commons, and the Soil Science Commons This document is available at https://uknowledge.uky.edu/igc/21/1-6/26 The 21st International Grassland Congress / 8th International Rangeland Congress took place in Hohhot, China from June 29 through July 5, 2008. Proceedings edited by Organizing Committee of 2008 IGC/IRC Conference Published by Guangdong People's Publishing House This Event is brought to you for free and open access by the Plant and Soil Sciences at UKnowledge. It has been accepted for inclusion in International Grassland Congress Proceedings by an authorized administrator of UKnowledge. For more information, please contact UKnowledge@lsv.uky.edu. 　 Multifunctional Grasslands in a Changing World 　 Volume Ⅰ 　 瞯 ]275　 瞯Grasslands/Rangelands Resources and Ecology ——— Ecology of Grasslands/RangelandsCompound system and benefit analysis about Legumes forage intercrop with prickly ash in linxiaY an qiong Zeng1 ,Shiming Y ang21 School o f Resources and Env ironment ,Bei j ing For . Univ . ,10083 ,P . R . China .E‐mail :z engyq111＠ sina .com2 Forest seeding work station ,L inx ia , Gansu ,731100 ,P . R . ChinaKey words : tree‐grass complex , soil water , forageIntroductionWe investigated the benefit of tree‐grass complex in linxia gansu province ,China .This area is arid and sem‐iarid ,and the soil is proven and less than what their need , ecological forestry and economic forestry play an impotent role in local . Sofinding new models to develop forest is meaningful .Material and methods Tish research is located in linxia gansu province ,baded on ９ years Chinese prickly ash intercropping withalfalfa ,white clover and bird摧s foot trefoil .We studied the ecological and economic efficiency using econology principle andmethod . We test the soil moisture of different distance between trees use TSC Ⅱ intelligence soil moisture fast tester .Conclusions We test ６‐２０cm soil moisture ,the results show that ( Figure １ ) : T ree‐grass complex enhance the soil moisturecontent in the forest land which interplanting forage , plays the role of water resource conservation .Because the water resourceconservation effect on three kind of leguminous forages ,so the alfalfa is stronger than white clover and lotus corniculatus ,Moreover , along with depth increase , its difference is smaller . About the water use efficiency that white clover is higher thanthe other .Figure 1 The change o f soil w ater o f whiter clouer ,bird摧s f oot tre f oil ,d f al f a ard ck in di f f erent .Table 1 The situation o f each intercrop p ing f orest land soil f ertileity unit(mg /kg) .N P K pHAlfalfa ( mg / kg ) ５４ U.０５ ４２ �.２９ １１３ 蜒.９２ ８  .７０Bird摧s foot trefoil ( mg / kg ) ５５ U.３６ ２７ �.５５ ２７３ 蜒.１２ ８  .８２Whiter clover ( mg / kg ) ４６ U.１１ ２０ �.２９ １３３ 蜒.２６ ８  .７８Control ( mg / kg ) ３９ U.６ ２５ �.３６ １８８ 蜒.４５ ８  .８２Table １ indicates that Because of the leguminous forages has the strong own nitrogen‐fixing capacity , af ter intercroppingleguminous forage , obviously enhances the soil fertility , particularly soil nitrogen .In Linxia Gansu province , the three kind ofleguminous forages in do not Rhizobium , lotus corniculatus摧s own nitrogen‐fixing capacity stronger than alfalfa and whiteclover .Supported by MOST :２００６BAD０４A０４-con ro -whiter clover _._bird's foot trefoil -alfalfa ~- 20.000 ~~x ~2 10.000 x..... ---s: ; 30 .000 1 ~~-·- C: 0 O "' 0 0 000 · ~ 0 0. 5 1 1. 5 2 2. 5 3 3. 5 "' I-control ---+- bird's foot trefoil -whiter clover -x-alfalfa c ~ 30.000 8 20.000 r ~~~ ; 10.000 x-x-x x::...x 1n 0.000- , 0 E 0 0 0.5 1 1.5 2 2.5 3 3.5 ~ --control -whiter clover g ---+-bird's foot trefoil -x-alfalfa c 30.000 (l) ~x::::::x-....x c 20.000 0 ~x _. ~-~x " ~ 10.000 ::, X -11, 0 000 ·a E 0 0 .5 1 1.5 2 2.5 3 3.5 -0 "' E 1---control -whiterclover I " 0 ---+-bird's foot trefoil -x-alfalfa N 

Compound System and Benefit Analysis about Legumes Forage Intercrop with Prickly Ash in Linxia

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Compound System and Benefit Analysis about Legumes Forage Intercrop with Prickly Ash in Linxia

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