1、適當抑製生長,藥物促花:番石榴在夏季高溫、高濕的環境下快速生長,大多枝葉繁茂,枝梢壯旺。進入8月份後,番石榴開花節位都明顯升高。按番石榴結果節位而論,在第2、4、8節位為多,但第8節—第12節也有少量的花。另外有不少枝條,均為徒長枝,坐果率不高。8月下旬用B9(比久)1000-2000 ppm噴施後花量猛增。同時也可結合摘心,在第5節或第9節摘心,常會促使第4節或第8節形成花。采取措施後,往往比沒有處理的花量多1-2倍,這些花容易坐果。但在使用藥物促花時,因季節氣候不同使用藥物也應不同。進入11yuehou,tianqizhuanleng,gaiyongaizhuangsucuhuabaohua,keyouxiaofangzhixiaohuashoulenghai。shiyongaizhuangsushi,yingpeiheshiyongpengsha。aizhuangsuyizengjiayouguodekuwei,peiyongpengshaquenengqizhejianshaokuweidezuoyong,qienengzengjiatiandu。
2、病蟲防治:番石榴秋冬季節病蟲害主要是炭疽病,可用70%甲基托布津可濕性粉劑或75%百菌清800倍液進行防治。主要蟲害有蚜蟲、介殼蟲、毒蛾,可用24%杜邦萬靈水劑1000倍液來防治。如有粉蚧類為害嫩梢。嫩梢將會變黑、萎縮,難長花,加上這類害蟲世代重疊,要連續用藥。用綠福、kuailingdengshachongxiaoguomingxian。zaiqiudongganhanshirongyifashenggenxianchong,yanzhongdezaochengfanshiliuguoyuanchengpianhuangwu。zhuyaoshilaoyebianzi,zhujianbianhong,zuihoukusi,zixiaershang,guanggantuzhi。ruokongzhibujishi,zhouweizhizhuxianhouchuxianleisizhengzhuang。yinci,qiudongjijieyifaxianlingxingbingzhu,bixujishiyongyao。keyiyongdichonglinghunhexishasashi,sashishiyingpaokaishupanbiaotuhunyunturang,keyiyouxiaokongzhimanyan。
3、合理使用葉麵肥:秋冬季節使用葉麵肥是非曲直有針對性地,效果較好。用3%尿素混合1%過磷酸鈣可以提高產量。用0.2%硼砂混合0.5%linsuanerqingjia,kecujinzheguo,zengjiatiandu。youyuqiudongjijieguangzhaobuzu,guanghezuoyongjiangdijiashangduociguaguo,fanshiliufengweiwangwangbiandan,yingzengshinongjiafei,tongshishiyongyemianfei。
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