sushengziweideyanghuguanlizhuyaofenweishuifeiguanli、zhengxingxiujianhebingchonghaifangzhi,zaishangyipianwenzhangzhongwomenweidajiajiangleshuifeiguanlijishu,benwenjixujidajiajiangjiesushengziweidexiujianzhengxingyubingchonghaifangzhijishu。
一、整形修剪技术:
sushengziweidezhengxingxiujianyixiumianjijieweizhu,shengzhangjijieweifu,genjubutongyuanlinhuanjingcaiqubutongdexiujianfangfa。
1、自然开心形。在紫薇定植后,当紫薇生长到定杆高度后,进行摘心促使二级分枝,后可选留3~5个健壮枝作为主枝,以后在主枝上选留角度不同、长势均衡的分枝1~2个作为侧枝。每年修剪时要选角度较大的上部枝条作为延长枝,并进行适当短截。这种树形通透性好,可以立体开花。
2、主干分层形。这种树形需要明显的主干和主枝,主干分层形,主枝均匀地分布在主干上。一般4个左右主枝,主枝上再留2个左右的侧枝。这种树形,适宜于庭院栽培和孤树植。
3、控制花期修剪。要让紫薇在“十一”怒放,可在8月上旬将处于盛花期的紫薇新梢短截,剪去全部花枝约1/3的梢端枝叶。此后,加强水肥管理,施肥2~3次,约30天后即可于新梢上再次形成花芽。一般从短截之日起,50天左右可再度开花,为节日增添喜庆气氛。
二、病虫害防治技术:
sushengziweidebingchonghaizhuyaoyouyachong、ziweirongjie、dasuoejiyouchonghaiyoufademeiwubing,yingjishifangzhi。
1.duiyuyachong,kepen1.2%ku·yanruyou800zhi1000beiyepenwu,huo50%kangyawei3000beiye,huo2.5%dishasi2500zhi3000beiye,huo6%bichonglin3000zhi4000beiyedengqizhongyizhongjinxingyemianpenwu,penshizhuyianquan。
2.duiyuziweirongjie,ruochongfuhuashengqihou7tiannei,weixingchenglazhihuogangkaishixingchenglazhicengshi,xiangzhiyepenshi40%sujiesharuyou1500zhi2000beiye,6%bichonglinkerongxingyeji 2000beiye,juzhileinongyao2500beiye。shangshusanzhongyaojijiaotishiyong,meige7zhi10tianpensayici,lianxupensa2zhi3ci,kequdelianghaodexiaoguo。penyaodeguanjianzaiyuzhuazhushiji(ruochongqi)yidanjieqiaoxingcheng,penyaonanyijianxiao。
3.duiyudasuoe,dongjishuluoyehoukejiandaoshushangdaiededainang,caiyongrengongzhaichu;yongpinzhenshishachongdengyoushachengchong;suoeyouchongduidibaichongyaojijiaomingan,shiyong90%dibaichongjingti1000zhi1500beiye,kequdejiaohaoxiaoguo。yekeyong2.5%xiuqingjuzhiruyou3500zhi4000beiye,huo50%xinliulinruyou1000zhi1500beiye,20%jusharuyou1000zhi1500beiyedeng,penwuliqiujunyunzhoudao。
4.duiyumeiwubing,zhuyaoyouyuyachonghejieqiaochongdengcixishihaichongdefenmiwusuoyinqi,fangzhihaotaguanjian,yekeyong500beiduojunlingyaoyepensafangzhi。