2、清耕覆蓋法 zaiguoshuxuyaofeishuizuiduodeshengchangqianqibaochiqinggeng,houqihuoyujizhongzhifugaizuowu,daifugaizuowuchangdahou,shishifanruturangzuolvfei,zhezhongfangfajiaozuoqinggengfugaifa。youdeguoyuanbuzhonglvfei,ercaiyonggequguoyuanzhouweishancaolvfeijinxingjijiexingfugai。zhezhongfangfajianyouqinggengfa、生sheng草cao法fa和he地di麵mian覆fu蓋gai的de優you點dian,是shi一yi種zhong較jiao好hao的de土tu壤rang管guan理li方fang法fa。但dan一yi般ban果guo園yuan覆fu蓋gai的de山shan草cao綠lv肥fei來lai源yuan不bu易yi。隨sui著zhe樹shu冠guan長chang大da,可ke利li用yong間jian作zuo綠lv肥fei空kong間jian有you限xian,又you間jian作zuo綠lv肥fei用yong工gong較jiao多duo,使shi此ci法fa應ying用yong受shou到dao限xian製zhi。
各地尚試驗應用地膜覆蓋土壤的做法,表現提高產量和改善根際環境的作用;但也表現根係浮生,土壤有機質含量下降的缺點,需做進一步試驗。
3、果園自然草生栽培法 果園自然草生栽培即讓果園自然生草,選留良性草,僅鏟除惡性草,使其覆蓋整個果園地表;在其旺盛生長期每年用割草機或人工割草3~4次ci,覆fu蓋gai樹shu盤pan,以yi控kong製zhi青qing草cao高gao度du,避bi免mian因yin草cao生sheng影ying響xiang樹shu體ti生sheng長chang或huo田tian間jian作zuo業ye。草cao生sheng果guo園yuan青qing草cao生sheng長chang必bi須xu從cong土tu壤rang中zhong吸xi取qu養yang分fen和he水shui分fen,一yi方fang麵mian應ying及ji時shi割ge草cao控kong製zhi草cao的de生sheng長chang;同時在果園草生開始幾年,應增加約20%的de氮dan肥fei施shi用yong量liang,等deng草cao量liang增zeng多duo,地di力li提ti高gao後hou,方fang可ke減jian少shao氮dan肥fei用yong量liang。幼you年nian果guo園yuan最zui容rong易yi受shou到dao草cao生sheng對dui養yang分fen和he水shui分fen競jing爭zheng的de影ying響xiang,宜yi在zai樹shu幹gan周zhou圍wei一yi定ding範fan圍wei內nei不bu施shi行xing草cao生sheng,其qi它ta部bu分fen草cao生sheng,然ran後hou將jiang割ge取qu的de青qing草cao覆fu蓋gai樹shu下xia,待dai樹shu冠guan擴kuo大da到dao一yi定ding麵mian積ji時shi再zai行xing全quan麵mian草cao生sheng。實shi行xing草cao生sheng的de果guo園yuan,還hai應ying該gai每mei年nian或huo隔ge年nian結jie合he冬dong季ji清qing園yuan進jin行xing一yi次ci15~20厘米表土中耕翻土埋草,以增加土壤有機質,改良土壤。
果園自然草生栽培,不僅省工,保持水土;erqiemeiniangexiadeqingcaojicaogenfulanzhunianzengjiaturangyoujizhi,huohuaturang,gaishanturangsuanjiandu,qianghuaganjugenqunhuoli,gailiangturangdelihuaxingzhuang。caoshengkehuanhediwendejijubianhua,gaishanguoyuanshengtaihuanjing,weitianditigongfanzhiqixidechangsuo,duibingchonghaiyouzonghefangzhidexiaoguo。kezengjiaguoyuanyoujilvfeidelaiyuan,jiangdishengchanchengben。yincijinnianyongchunxiandalituiguangguoyuanzirancaoshengzaipeifangfa。danguoyuancaoshengzaipeiyishibiaocengturangbanjie,yingxiangtongqi,qingcaogenxiqiangda,qiezaiturangshangcengfenbumiduda,jiequshentoushuifen,xiaohaobiaocengdansu,yizhiganjugenxifusheng,xujiehezhouqixingturanggengzuojiayikefu。
各(ge)種(zhong)土(tu)壤(rang)管(guan)理(li)方(fang)法(fa)皆(jie)有(you)利(li)弊(bi),可(ke)綜(zong)合(he)應(ying)用(yong)以(yi)減(jian)少(shao)弊(bi)端(duan)。隨(sui)著(zhe)社(she)會(hui)經(jing)濟(ji)發(fa)展(zhan),勞(lao)力(li)成(cheng)本(ben)日(ri)益(yi)提(ti)高(gao),柑(gan)橘(ju)生(sheng)產(chan)競(jing)爭(zheng)激(ji)烈(lie),栽(zai)培(pei)技(ji)術(shu)將(jiang)趨(qu)於(yu)果(guo)園(yuan)少(shao)耕(geng)的(de)土(tu)壤(rang)管(guan)理(li)方(fang)法(fa)。根(gen)據(ju)長(chang)期(qi)的(de)生(sheng)產(chan)實(shi)踐(jian)和(he)栽(zai)培(pei)技(ji)術(shu)的(de)改(gai)進(jin),山(shan)地(di)果(guo)園(yuan)土(tu)壤(rang)管(guan)理(li)應(ying)在(zai)挖(wa)大(da)穴(xue)或(huo)壕(hao)溝(gou)定(ding)植(zhi),並(bing)逐(zhu)年(nian)擴(kuo)穴(xue)全(quan)園(yuan)深(shen)耕(geng)改(gai)土(tu)的(de)基(ji)礎(chu)上(shang),施(shi)行(xing)果(guo)園(yuan)自(zi)然(ran)草(cao)生(sheng)栽(zai)培(pei),每(mei)年(nian)或(huo)隔(ge)年(nian)進(jin)行(xing)一(yi)次(ci)結(jie)合(he)冬(dong)季(ji)清(qing)園(yuan)15~20厘米的表土中耕鬆土埋草工作,在青草旺盛生長時期每年割草3~4次ci覆fu蓋gai樹shu盤pan的de土tu壤rang少shao耕geng管guan理li方fang法fa較jiao為wei科ke學xue。成cheng年nian果guo園yuan長chang期qi耕geng作zuo後hou可ke再zai行xing局ju部bu輪lun換huan深shen耕geng埋mai肥fei,以yi保bao持chi果guo園yuan深shen層ceng土tu壤rang改gai良liang熟shu化hua,保bao水shui保bao肥fei,根gen係xi發fa達da;表層土壤自然草生減少耕作次數,保持水土,增加有機質來源;並對表層土壤進行周期性改良,保持表層土壤和根係的活性。
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