改短縮節留分蔓為伸長節留分蔓:西瓜苗出土後,子葉以上有六個短縮節,而每個短縮節都有很強的分蔓能力。過去廣大瓜農在生產中,changchangshizaiduansuojieliufenman,xiguashengchanzhong,duoweisanmanzhengzhi,jiyizhuliangfu。danzaishijianzhongfaxian,duansuojieyouhenqiangdefenmannengli。chuzhumanwai,zaiduansuojieliulianggefenman,zheyangdesanmanzhengzhiwangwangchuxianzhucibufen,santoubingjin。youshifenmanshengchangwangsheng,chaoguozhuman,fenbuchuzhufuman,zheyangxiangyingdedoubianchengleruoman。youshizaizhumanshangzuogua,youshizaifumanshangzuogua。cihuakaifangshi,xiangduijiaoruo,biaoxianyouguaxiaoeryuan,guadixierduan,huaguanxiaoerruo,jianglaibuhuichangchengdagua。jiyuzhezhongqingkuang,kegaiduansuojieliufenmanweishenchangjieliufenman。jiqudiaoyiqieduansuojiefenman,shizhumanshenchang,zaizaizhumanshangliulianggefenman。buweiweizaizhumanshengchangzhi33limizuoyoushi,xuanduichenglianggejiewei,liulianggefenman。zheyangdezhengzhifazhucifenming。zhumanshengchangcuzhuangyouli,jianglaizaizhumanshangliugua。cihuakaifangshi,youguadaqiechengchangxing,guadicuqiechang,huaguandaqieruizhuang。zheyangdeyouguagengyichangchengdagua。congzhumanshangliudeliangzhifuman,xiangduijiaoruo,buzuogua,zhizaijinxingguanghezuoyong,zhizaoyingyang,gongyingzhumanguashengchang。
改單溝施肥為雙溝施肥:在西瓜生產中,一般施肥量都較多,除土雜肥外,還有餅肥、化肥等。很多瓜農施肥時采用開一條深、寬各20~30厘li米mi的de溝gou,把ba所suo有you的de肥fei料liao都dou集ji中zhong施shi在zai這zhe一yi條tiao溝gou內nei。施shi肥fei後hou起qi壟long,肥fei料liao就jiu在zai壟long下xia,瓜gua種zhong在zai壟long上shang。有you人ren認ren為wei,這zhe樣yang集ji中zhong施shi肥fei瓜gua長chang得de好hao,其qi實shi則ze不bu然ran。這zhe樣yang有you很hen多duo缺que點dian:1、瓜種在肥溝上,由於肥料多而集中瓜苗容易過旺徒長。2、有時還有燒苗現象,包括死苗和不出苗。3、坐瓜時,西瓜的很多根係已經生長到肥溝的範圍外,致使養分不足,長不成大瓜。為此可改單溝施肥為雙溝施肥。相距20~30厘米,開兩條深、寬各20~30厘li米mi的de溝gou,肥fei分fen兩liang溝gou施shi入ru。起qi壟long後hou,瓜gua種zhong在zai兩liang肥fei溝gou之zhi間jian。這zhe樣yang瓜gua苗miao定ding植zhi後hou生sheng長chang粗cu壯zhuang,且qie根gen係xi很hen快kuai就jiu能neng吸xi到dao肥fei料liao,又you不bu易yi過guo旺wang徒tu長chang,更geng不bu易yi燒shao壞huai瓜gua苗miao。坐zuo瓜gua時shi,植zhi株zhu的de大da部bu分fen根gen係xi,仍reng在zai兩liang肥fei溝gou範fan圍wei內nei,因yin此ci西xi瓜gua長chang的de個ge大da,增zeng產chan效xiao果guo顯xian著zhu。
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