一、防病治蟲。進入夏季,溫度高濕度大,最易各種病菌、害蟲滋生繁衍,因此,抓好病蟲害的防禦尤為重要。其防禦措施有:綜合藥防、人工防範、針對性防範。
二、防fang脫tuo肥fei缺que肥fei。夏xia季ji為wei蘋ping果guo樹shu需xu肥fei高gao峰feng,若ruo不bu及ji時shi追zhui肥fei會hui出chu現xian脫tuo肥fei而er影ying響xiang樹shu勢shi及ji幼you果guo的de正zheng常chang發fa育yu。因yin而er,應ying及ji時shi追zhui肥fei。通tong常chang對dui一yi般ban性xing大da樹shu,可ke每mei株zhu穴xue施shi入ru糞fen尿niao50公斤或尿素、過磷酸鈣、硫酸鉀,按3∶10∶5混合成2公斤施入。對於脫肥顯著的田塊,也可在噴藥時混入2%deniaosushuirongyeyemianpenshi。tongshi,duiyuyouquesuzhengzhuangdepingguoshu,yingyouzhenduixingdipenfeibujiu。ruduiyuyouquegaiyuansueryoushuixinbingdeguoshu,kezaiguoshipengdaqizhicaishouqian10周或8周時,噴施2~4次0.5%的硝酸鈣水溶液補救。
三、防日灼。盛夏氣溫高,日照強,蘋果果實局部溫度有時會高達45℃yishangerfashengrizhuo。qizhengzhuangshiguoshimianshangxianchuxianheiban,shaohouzhujiankuodazhizhilandiao,duichanliangyingxiangjiaoda。qifangyufangfa,yishishishiguoyuanjiaoshuihuopenshui,yijiangwenzengshifanggaowenqiangguangduiguoshidezhijieweihai;二是對易發生日灼的果實塗白、貼紙或套袋。塗白劑的配方為石灰、水是1.5∶4,加少許食鹽,調成糊狀即成。
四、fangzaoshuai。xiajiweipingguoshuyingyangxiaohaofengqi,changhuiyinfeilibuzu,huoshouzilaozaihaierchuxianzaoshuaixianxiang。suoyi,jinruxiaji,chushishizhuifeifangzaoshuaiwai,haiyingzhuyifangzichulao。zilaoshipingguoshuzaoshuaidezhuyin,yinci,yingjishiqinggoulishui,zuodaoyuguodigan,yuanbujishui,yuantuganshuang。
五、防大風、冰雹。夏季天氣氣候變化大,是大風、bingbaodengqixiangzaihaidepinfaqi,yingjiaqiangfangyu。duiyubingbaozaihaiyingzouqunfangzhilu,jizaiyoubingbaofashengshi,tiqianxiangbaoyunfashexiaobaodanxiaobao,bingyubaohoujishicaiquzhuifei、澆水等補救措施。對於大風災害,應於災害前適時采取拴繩、吊枝等方法,抑製大風吹折、吹斷樹幹或樹枝,以減輕大風危害。
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