在冬季衝施複合肥,需注意以下幾點:
一是少施、勤qin施shi。複fu合he肥fei中zhong的de硝xiao態tai氮dan和he銨an態tai氮dan在zai溶rong解jie過guo程cheng中zhong會hui吸xi收shou部bu分fen熱re量liang,可ke能neng會hui影ying響xiang地di溫wen,對dui作zuo物wu根gen係xi的de生sheng長chang造zao成cheng不bu利li。但dan作zuo物wu正zheng常chang生sheng長chang需xu要yao充chong足zu的de養yang分fen供gong應ying,所suo以yi在zai冬dong季ji衝chong施shi複fu合he肥fei時shi要yao少shao施shi、勤施,並盡量在晴天上午衝施。
二是配合施用純生物肥(不含氮、磷、鉀)。純生物肥中含有多種有益菌,能活化改良土壤,起到固氮、解磷、釋鉀的作用,這些生物菌還能促進作物吸收肥分。
三是要有針對性地施用。葉菜類蔬菜生長快,需氮多、需磷少,要選用高氮低磷的複合肥;guaguoleishucaizaijieguoqiduijiadexuqiuliangjiaoduo,duilindexuqiuliangjiaoshao,keyixuanyonggaojiadilindefuhefei。duizhunbeiyushucaimiaodetian,yinzuowuzaimiaoqiduilindexuqiuliangda,keyixuanyonghanlingaodefuhefeizuojifei。shucaimiaodingzhihuanmiaohou,keyishiliangchongshihanlingaodefuhefei。
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