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1、按照作物营养须要挑选营养型水溶肥。
番茄的幼苗期对营养接收量较小,从第一穗果膨大起头,营养的接收逐步增添,氮素接收速度敏捷增大;番茄对磷的接收以发展后期为主;番茄对钾的接收量在营养元素中居首位,从第一穗花序坐果期至拉秧期,钾素接收比例愈来愈大,在收成末期其接收比例靠近氮素的二倍。是以,施瑞德以为在番茄发展全部生养期水溶肥挑选要遵守后期以氮、磷为主,中期以氮、钾为主,后期以钾、氮为主。
zaitiaoxuanheshiyongzhuifeiyongfeishi,yinganzhaofangzhenchanliang、nituyingyanggongjizhuangtaihehouqiwujifeihejifeitouruhuanjingkendingfanqiezhuifeizongliang,erhouanzhaochabieshengyangqiyingyangxuyaojilv,tingzhigongdaodeshifei。ruzaishiyongdapiwujifeidehuanjingxia,yingtiaoxuandilinfeiliaopeifang;dangnitufeilijiaocha,shiruideyiweikezaiyoumiaoqitiaoxuangaolindeshuirongfei;erduinitusuxiaojiajileilianghengaodedapeng,xuyaozhenzhuozhongjiahanliangbingfuyishuirongxingmeipeifangdeshuirongfei,yifangyinjiasutaigaobiligongjiyinfagai、meiyingyanglizidejiekangganhua。
(2) 按照莳植题目挑选功效型水溶肥。
在肥料挑选时能够或许按照肥料的功效与特色停止挑选。对泥土酸化、板结的菜田,能够或许挑选腐植酸水溶肥停止泥土的改进;对轮作的菜田,能够或许挑选生物型无机水溶肥来改进泥土根区微生态环境。而对反季候出产的蔬菜在肥料挑选上,施瑞德以为能够或许挑选含氨基酸、腐植酸、海藻酸等具备促根抗逆感化的功效型水溶肥,在夏季釆用此类肥料对果类菜停止灌根施肥,能够或许增进蔬菜根系的呼吸与发展,进步果类菜的抗高温勒迫才能,改进作物的品德。
(3) 按照产值与施肥体例挑选适合的水溶肥和叶面肥。
jucuocuoshifanqiechanzhijueduijiaogao,riguangwenshiyuedongchafanqiedechanzhijiaogaodehuanjingxia,nenggouhuoxutiaoxuanjiaweijueduijiaogaodeguahaoxingshuirongfei,yeketiaoxuanjiaweijiaodideshuirongxingzhiliaofei,shiruideyiweikeanzhaoxiangxihuanjingerding。 lingwai,zaichuchanshiyongjinchengzhong,chuanzhaozuowuchanzhitiaoxuanshihejiaweideshuirongfeihuoyemianfei,haiyinglianxijiaoguanshifeitilitingzhitiaoxuan。