首先,要注意增施速效氮肥。
禾本科作物秸稈含纖維素較高,達 30%~40%,還田後土壤中碳素物質會陡增,一般要增加1倍左右。而微生物的增長是以碳素為能源、以yi氮dan素su為wei營ying養yang的de,微wei生sheng物wu必bi須xu從cong土tu壤rang中zhong吸xi取qu氮dan素su以yi補bu不bu足zu,也ye就jiu造zao成cheng了le與yu作zuo物wu爭zheng氮dan的de現xian象xiang。若ruo沒mei有you增zeng施shi氮dan肥fei,就jiu容rong易yi導dao致zhi土tu壤rang中zhong氮dan素su不bu足zu,影ying響xiang育yu苗miao苗miao期qi生sheng長chang。因yin而er,秸jie稈gan還hai田tian時shi增zeng施shi氮dan肥fei顯xian得de尤you為wei重zhong要yao,它ta可ke以yi起qi到dao加jia速su秸jie稈gan腐fu解jie,保bao證zheng作zuo物wu苗miao期qi生sheng長chang旺wang盛sheng的de雙shuang重zhong功gong效xiao。一yi般ban來lai說shuo,小xiao麥mai秸jie稈gan還hai田tian後hou每mei畝mu應ying增zeng施shi尿niao素su30公斤或碳酸氫銨50公斤,滿足秸稈分解所需。
其次,要注意翻壓覆蓋。
一yi般ban來lai說shuo,在zai作zuo物wu收shou獲huo後hou就jiu應ying立li即ji把ba秸jie稈gan翻fan耕geng入ru土tu,避bi免mian因yin秸jie稈gan被bei曬shai幹gan而er影ying響xiang腐fu熟shu速su度du,最zui好hao邊bian收shou邊bian耕geng埋mai翻fan壓ya。然ran而er,小xiao麥mai收shou獲huo後hou一yi般ban很hen少shao進jin行xing土tu壤rang翻fan耕geng,小xiao麥mai秸jie稈gan暴bao露lu在zai地di表biao,常chang被bei風feng吹chui走zou,也ye影ying響xiang秸jie稈gan的de腐fu解jie。因yin此ci,小xiao麥mai收shou獲huo後hou要yao注zhu意yi進jin行xing適shi當dang的de翻fan壓ya覆fu蓋gai,固gu定ding秸jie稈gan,並bing促cu進jin秸jie稈gan快kuai速su分fen解jie。新xin鮮xian秸jie稈gan在zai腐fu熟shu過guo程cheng中zhong會hui產chan生sheng各ge種zhong有you機ji酸suan,對dui作zuo物wu根gen係xi有you毒du害hai作zuo用yong。因yin此ci,在zai酸suan性xing和he透tou氣qi性xing差cha的de土tu壤rang中zhong進jin行xing秸jie稈gan還hai田tian時shi,應ying施shi入ru適shi量liang的de石shi灰hui,以yi30-40千克/畝為宜。
最後,要注意防治病蟲害。
一般條件下,秸稈還田後病蟲害有加重發生的趨勢。尤其是蠐螬、lougudengdixiahaichong,weifushudejiegankegongqiqushihefanzhi。jieganzhongdebingyuanjunhechongluandeng,yehuijinruturangzhong,zengjiaxiayichazuowushoudaoweihaidejilv。suoyi,zaijiangjieganshiruturangzhiqian,keyongyaojijiangjieganjinxingxiaodu,yongbaijunqing500倍混加辛硫磷1000倍將秸稈噴灑一遍,以減少病原菌和蟲卵的為害。
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