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黄瓜幼苗死亡是什么原因?

faburiqi: 2017-04-25 10:00

问:
黄瓜幼苗死亡是什么原因?

dg真人游戏genjunindemiaoshudgzhenrenyouxiyewufaquedingshishenmeyuanyin。yixiashihuangguazhuyaobinghaidefangzhi:

dg真人游戏yi、cudaobing。youmiaoqidepeijingjibuhuozhongbuchengshuijinzhuang,houbianchenghuanghesegankusuoweixianzhuang,youshiguamiaoziyefulan,bianhekusi。qifabingtiaojianshi: yumiaoqichuxiandiwen、gaoshi。jieguoqiyinyulianmian,guoshiyeyiranbing。benbingyiyufangweizhu,duiyumiaochuangyong20%dijunlinghuo50%miaokangjinxingturangxiaodu。fabingshi,yong20%dijunling、50%miaokang、25%jiashuangkeshixingfenjihuo70%daisenmengxinkeshixingfenjiguangenhuopenwu。

er、likubing。qichu,zaijingbuchuxiananhesebingban,jierweisuoganku,guamiaosiwangdanbuzhedao。genbuduozaidibiaogenjingchu,picengbianhehuofulan。zaimiaochuangnei,guamiaobaitianweinian,yejianhuifu,shuribingzhukusi。qifabingtiaojianshi: bozhongguomi,jianmiaobujishi,wenduguogaoerfabing。kezaifabingchuqipenlin20%dijunlingkeshixingfenji800-1000beiyehuo50%miaokangkeshixingfenji1000-1500beiyehuo3.2%ejiashuiji300beiyepenwu。

san、shuangmeibing。ziyeyoutunlvhuangbanbianweihuanghese。zhenyeyeyuanhuoyebeichuxianhuanghesebankuai,shidudashiyebeimianhuoyemianzhangchuhuisemeiceng。qifabingtiaojianshitianjianshifaqijunwen15-16℃,liuxingqiwen20-24℃。keyong70%yibingkexingkeshixingfenji500-700beiyehuo72%kedankeshixingfenji600-800beiyehuo72%shuangpenwufangzhi,lianpen3-4ci。

si、yibing。youmiaonenjianchengshuizizhuang,zhujiangankutujian;chengzhufabingshi,zaijingjibuhuonenjingjiebuchuxiananlvseshuizizhuangban,houbianruan,bingbuyishangyepianweinianhuoquanzhukusi。qifabingtiaojianshi: tuchuanbinghai。fabingshiwen28-30℃,yushuiduohuojiaoshuiguoduofabingzao,chuanbokuai,weihaizhong。zaiyujidaolaizhiqianxianpenyaoyufang,yuhoufaxianbingzhujishibachuhou,lijipensahuojiaoguan70%yibingkexingkeshixingfenji500-700beiyehuo72%kedankeshixingfenji600-800beiye,ge7-10tianpenguan1ci,lianxu3-4ci。

wu、huimeibing。bingjunduocongkaibaixionghuaqinru,zhihuabanfulan,jinerxiangyouguakuozhan,jiaodadeguaxianbianhuangbingshenghuimei,houfulihuotuoluo。languahuolanhua,nengyinqijingbufulanzheduan,zhizhukusi。qifabingtiaojianshi: chunjilianyintianduo,qiwenbugao、shiduda、fangfengbujishi。zaifabingchuqipensa50%wanmeidikeshixingfenji1000-1500beiyepenwu,huo50%sukelingkeshixingfenji2000beiye,lianpen2-3bei。

liu、quesubing。(1)quedan,yepianxiao,zuoguoshao,pengdaman。kepensashucailinghuo0.2%tansuanqinganrongyefangzhi;(2)quelin,yepianyinghua,senonglv,guoshichengshuwan,xiabuyekuhuotuoluo。kepensa0.2-0.3%linsuanerqingjia2-3cifangzhi;(3)quejia,qianqiyeyuanweihuang,zhonghouqikusi,yexiangwaicejuanqu。kepensa0.2-0.3%linsuanerqingjia2-3cifangzhi;(4)quegai,shangweiyepianxiao,yexingchengmoguzhuang。pensashucailinghuo0.3%lvhuagaishuirongye,mei3-4tian1ci,lianpen3-4ci;(5)quemei,yifabing,shengqihuidaozhiyekubing。yebeipensa0.8%-1%liusuanmeishuirongye,ge7-10tian1ci,lianxu2-3ci;(6)quexin,zhongweiyeweiyetunsezhikusi,yepianwaijuan。kepensa0.1-0.2%liusuanyaxinshuirongyefangzhi;(7)quetie,xinye、fuyabianhuangbai。kepensa0.1-0.5%liusuanyatieshuirongyefangzhi;(8)quepeng,jiejianduansuo,guoshibiaopimuzhihua。kepen0.12-0.25%pengshahuopengsuanshuirongye。zaishangshucuoshijichushang,keyongweifeishucailing,meimu150-200ke,7-10tian1ci,lianpen4-6ci。

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