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时间:2019-05-16
《山核桃投产林林下套种绿肥效应》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、●-.—LJ■I_J■J】‘doi:10.3969/j.issn.1000-8101.2011.03.024山核桃投产林林下套种绿肥效应余琳,陈军,陈丽娟,程建斌,吴家森,夏国华(1.浙江省淳安县林业局,浙江淳安311700;2.浙江农林大学林业与生物技术学院)摘要:为增加山核桃投产林林下植被覆盖度、提高林地水土保持效果,增加土壤肥力,2008-2009年开展了山核桃林下套种1年生黑麦草、多年生黑麦草、白三叶、红三叶以及紫花苜蓿等5种绿肥,对其生物量、土壤有机质、林下昆虫多样性、果实产量和品质的影响进行研究(清耕为对照)。结果表明:(1)林下套种绿肥显著增加林下植被生物量,以1年生黑麦
2、草效果为好,鲜质量和干质量分别达到55000和9420kg/hm,套种白三叶使土壤有机质增加了2.3g/kg;(2)林下套种绿肥有利于增加害虫天敌数量和减少害虫密度,其中主要害虫山核桃蚜虫、山核桃花蕾蛆等害虫密度分别降低了57.14%和36.45%;(3)林下套种绿肥显著提高山核桃产量,套种平均产量为821.55kg/hm,较对照增加l2.46%,套种后果品品质也明显提高;(4)综合评价5种套种绿肥的效果后认为,山核桃林下以套种白三叶、1年生黑麦草和多年生黑麦草较好。关键词:山核桃投产林;绿肥;套种效应Effectofinterplantationofgreenmanurevariet
3、iesonyieldofhickoryforests//YuLin,CHENJun,CHENLi-juan,CHENGJian—bin,wUJia—sen,XIAGuo—huaAbstract:Toincreaseundergrowthvegetationcoverageofyieldinghickoryforestsandtoimprovesoilandwaterconservationandsoilfertility.anexperimentwasconductedtostudytheeffectofinterplantationofdifferentgreenmanurevari
4、eties,in—cludingLoliummuhiflorum,Lperenne,Trifoliume,pmte~e,andMedicagosativa,onthebiomass,soilorganicmatter,diversityofinsect,yieldandqualityofhickory.Theresultsshowedthatinterplantationofgreenmanurevarietiessignificantlyincreasedthebiomassofundergrowthvegetationandsoilfertility.Thefleshweighta
5、nddryweightofLmulti-florumWasreachedto55000and9420kg/hm,respectively,whenitWasplantedunderthehickoryforests.Soilo~aniematterwasincreasedby2.3g/kgwhenTrifoliumrepe璐wasplantedintheforest.Interplantationofgreenmanurevarietieswasbeneficialtoincreasenaturalenemiesandtodecreasepestdensity,andthedensit
6、iesforKurisakiasinocaryaeandCont—arinaisp.werereducedby57.14%and36.45%,respectively.Interplantationofgreenmanuresignificantlyincreasedtheyieldofhickory,andtheaverageyieldof821.55ks/hmwithinterplantationofgreenmanurewasincreasedby12.46%thanthatundertheconditionofcleantillage.Andthequalitywasalsoo
7、bservedtobeimproved.Comprehensively,itWassuggestedthatrepens.LmultiflorumandLperennearemoresuitabletobeinterplantedunderyieldinghickoryforest.Keywords:yieldinghickoryforest;greenmanure;interplantation;efectFirstauthor’Saddre
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