近年來,全水溶性肥料(簡稱水溶肥)作zuo為wei一yi種zhong新xin型xing肥fei料liao,被bei越yue來lai越yue多duo的de農nong戶hu所suo認ren識shi和he接jie受shou,並bing普pu遍bian施shi用yong在zai了le大da棚peng蔬shu菜cai上shang。然ran而er,記ji者zhe在zai下xia鄉xiang采cai訪fang中zhong卻que發fa現xian,不bu少shao農nong戶hu施shi用yong水shui溶rong肥fei的de方fang法fa不bu對dui頭tou,結jie果guo花hua錢qian買mai了le肥fei料liao,卻que沒mei用yong到dao好hao處chu。
水溶肥總營養含量都在50%yishang,qiehanyouduozhongzhongweiliangyuansu,yuyibanfuhefeixiangbijiao,yingyangquanmian,quanrongyushui,xishouliyonglvgao。jieheshuirongfeidezhexietedian,guangdanonghuzaishiyongshang,yinggaizhangwoyidingjiqiao。
首先,不要按照衝施複合肥的做法直接衝施,而要采取“二次稀釋”衝肥法。記者采訪發現,有的農戶直接按照衝施一般複合肥的做法衝施水溶肥,結果造成了衝肥不均勻,衝肥量多的蔬菜出現傷根、黃葉情況,衝肥量少的蔬菜則長勢受影響。水溶肥比一般複合肥養分含量高,用量少,一般畝用8—10gongjinjike。jianyinonghukeshixianzhizuoyigechongshitong,tongdichushegekaiguan,chongfeiqian,xianjiangshuirongfeironghuazaichongshitongnei,jisuanhaoshifeiliang,dakaikaiguan,rangfeiliaorongyeshunzhejiaoshuijinxingchongfei。ciwai,nonghukeyizhijieyongdiandongpenwuqizuoweixishifeiliaorongyederongqi,jinxingchongfei。ercixishichongfeidemudeshibaozhengchongfeijunyun,tigaofeiliaoliyonglv。
其次,穴施水溶肥要注意施用量。穴施肥料具有用肥集中、利用率高、用肥少等特點,記者采訪中發現,不少農戶對穴施水溶肥的用量把握不準,結果出現了燒根、燒苗的情況。因此,穴施水溶肥一定要注意施用量,比如芳潤(20:20:20)水溶肥,以穴施3—5克為宜,而且要與土攪拌均勻後再栽苗。
最zui後hou,水shui溶rong肥fei噴pen施shi時shi,盡jin量liang單dan用yong,或huo者zhe與yu非fei堿jian性xing的de農nong藥yao混hun用yong。在zai蔬shu菜cai作zuo物wu出chu現xian缺que素su症zheng或huo根gen係xi生sheng長chang不bu良liang時shi,不bu少shao農nong戶hu多duo選xuan用yong水shui溶rong肥fei來lai噴pen施shi加jia以yi緩huan解jie。記ji者zhe建jian議yi農nong戶hu盡jin量liang單dan獨du噴pen施shi水shui溶rong肥fei,或huo者zhe與yu非fei堿jian性xing的de農nong藥yao混hun用yong,以yi免mian金jin屬shu離li子zi起qi反fan應ying產chan生sheng沉chen澱dian,造zao成cheng葉ye片pian肥fei害hai或huo藥yao害hai。
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