秋季是果樹追施基肥的最佳時節,但有些果農在施基肥時卻施用未腐熟的有機肥,造成了很多隱患。
1.zhuoshanggenxi。nongjiafeidaduolaiyuanyudongwufenbian。zhexieyoujifeiweifushushiqiyangfenzhuangtaishihuanxiaoxingde,bunengbeiguoshugenxizhijiexishouheliyong,ruguojiangqishiru,zaidixiafushuguochengzhong,yichanshengreliang,zaochenggenbuzhuoshang(俗稱“燒根”),引發根腐病。
2.yingyangshifangyushutixufeibutongbu。qiujishiruweijingfushudeyoujifei,youyuturangwendudi,zaidixiafushuxuyaojiaochangshijian。diernianchunji,shutixuyaodaliangdeyingyangwuzhi,erhuanmanfushudeyoujifeisuoshifangchudeyingyanggenbenwufamanzushutidexuyao。tongshi,zaifushuguochengzhongweishengwuhaihuixiaohaodiaoyibufenguoshugenxiturangzhongyuanyoudeyingyangyuansu(如氮肥)。這(zhe)樣(yang)在(zai)春(chun)季(ji)樹(shu)體(ti)往(wang)往(wang)表(biao)現(xian)營(ying)養(yang)不(bu)良(liang)。而(er)進(jin)入(ru)夏(xia)秋(qiu)季(ji)後(hou),雨(yu)量(liang)增(zeng)加(jia),地(di)溫(wen)快(kuai)速(su)上(shang)升(sheng),有(you)機(ji)肥(fei)腐(fu)熟(shu)速(su)度(du)明(ming)顯(xian)加(jia)快(kuai),釋(shi)放(fang)出(chu)的(de)有(you)機(ji)營(ying)養(yang)物(wu)質(zhi)增(zeng)多(duo)。這(zhe)樣(yang)會(hui)導(dao)致(zhi)樹(shu)體(ti)生(sheng)長(chang)加(jia)快(kuai),大(da)量(liang)冒(mao)條(tiao),果(guo)實(shi)著(zhe)色(se)不(bu)良(liang),營(ying)養(yang)生(sheng)長(chang)過(guo)剩(sheng),花(hua)芽(ya)分(fen)化(hua)能(neng)力(li)差(cha)。有(you)人(ren)曾(zeng)經(jing)對(dui)施(shi)入(ru)生(sheng)糞(fen)的(de)果(guo)園(yuan)掘(jue)土(tu)調(tiao)查(zha),發(fa)現(xian)3年後仍有部分生糞處在原來狀態。
3.招zhao引yin地di下xia越yue冬dong的de害hai蟲chong。未wei經jing腐fu熟shu的de有you機ji肥fei由you於yu含han有you大da量liang的de動dong物wu性xing有you機ji質zhi,因yin而er成cheng為wei許xu多duo果guo樹shu害hai蟲chong的de理li想xiang越yue冬dong場chang所suo,特te別bie容rong易yi招zhao引yin為wei害hai果guo樹shu的de金jin龜gui子zi(蠐螬)、桃小食心蟲、尺蠖、舟形毛蟲、梨花網蝽等,對蟲害防治極為不利。
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