衝施肥品種類型多,從化學性狀及營養成分上可分為三種:一是無機類型的如尿素、磷酸二氫鉀、高鈣型、高鉀型等;二是有機類型的,如氨基酸型、腐殖酸海洋生物型等;三是微生物類型的,如酵母菌型等。近年來複配製衝施肥品種發展很快,基本上可以分為兩類,一類是將有機、無機、生物等原料,經科學加工、fupeizaiyiqiershengchandefuhexingzhiji,lingyileishijiangyoujihewujicailiao,kexuepeizhierchengdeyoujiwujiyetifuhechongshifei。zhexiexinxingfupeizhijichongshifeizhixushiyongyizhongjikemanzuzuowuduiduozhongyuansudexuqiu。
科學使用衝施肥,必須注意以下幾點:一、要正確選擇肥料品種。衝施肥絕不是“肥隨水衝”這麼簡單,必須根據不同作物選用,如種植需氮較多的蔬菜作物時,可選用尿素或硝酸銨;二、使shi用yong方fang法fa要yao得de當dang。施shi用yong衝chong施shi肥fei前qian,應ying先xian把ba固gu體ti化hua的de肥fei料liao加jia水shui化hua開kai,製zhi成cheng母mu液ye,然ran後hou加jia水shui衝chong施shi。對dui於yu一yi些xie淺qian耕geng性xing蔬shu菜cai等deng作zuo物wu,或huo不bu便bian土tu壤rang施shi肥fei時shi,可ke將jiang配pei製zhi好hao的de肥fei料liao隨sui水shui衝chong施shi,衝chong施shi過guo程cheng中zhong要yao控kong製zhi好hao水shui量liang,確que保bao養yang分fen在zai地di裏li分fen布bu均jun勻yun;三、肥料用量和使用濃度要合理。用量過大、濃度過高,易產生氨氣、氧化氮、硫化氫等有毒有害氣體,引起作物中毒;切qie忌ji直zhi接jie把ba固gu體ti衝chong施shi肥fei撒sa在zai田tian間jian,澆jiao水shui衝chong施shi,反fan而er造zao成cheng肥fei料liao分fen布bu不bu均jun勻yun,甚shen至zhi出chu現xian燒shao苗miao。肥fei水shui衝chong施shi後hou,結jie合he及ji時shi中zhong耕geng鬆song土tu,效xiao果guo更geng佳jia。四si、hanweishengwuzhijileixingdefuhexingchongshifei,yibaocunyinliangchu,bimianyangguangbaoshaiheguoduchaore,bukeyushajunjihunyong。ruguojiekuai,kejixushiyong,buyingxiangfeixiao。
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