在(zai)生(sheng)產(chan)中(zhong),不(bu)少(shao)菜(cai)農(nong)為(wei)了(le)促(cu)進(jin)定(ding)植(zhi)蔬(shu)菜(cai)盡(jin)快(kuai)恢(hui)複(fu)生(sheng)長(chang),對(dui)定(ding)植(zhi)緩(huan)苗(miao)水(shui)實(shi)行(xing)大(da)水(shui)漫(man)灌(guan),結(jie)果(guo)適(shi)得(de)其(qi)反(fan),既(ji)增(zeng)加(jia)了(le)澆(jiao)水(shui)成(cheng)本(ben),又(you)導(dao)致(zhi)了(le)植(zhi)株(zhu)旺(wang)長(chang)。特(te)別(bie)是(shi)大(da)水(shui)漫(man)灌(guan)後(hou)又(you)降(jiang)大(da)雨(yu),更(geng)使(shi)蔬(shu)菜(cai)“雪上加霜”,若補救措施跟不上,甚至造成幼苗因土壤濕度過大而爛根死亡。
旺長植株的表現是地上部分莖節細長、葉薄、莖稈柔嫩、genxiqian,qikangbingxingnengjiangdi,yidaofu,zhijieyingxiangdaozhuangmiaozaofa,hechanliangpinzhidetigao。yinci,jiaohaodingzhihuanmiaoshui,shiquebaoqiuyanqieguoleishucaigaochanyouzhideyixiangzhongyaocuoshi。
茄qie果guo類lei蔬shu菜cai,一yi般ban采cai用yong起qi壟long寬kuan窄zhai行xing栽zai培pei,或huo平ping地di開kai溝gou澆jiao水shui定ding植zhi後hou再zai起qi壟long,雖sui然ran定ding植zhi的de方fang式shi不bu同tong,但dan定ding植zhi緩huan苗miao水shui時shi都dou不bu要yao大da水shui漫man灌guan。進jin行xing寬kuan窄zhai行xing栽zai培pei的de,應ying在zai定ding植zhi當dang天tian小xiao水shui澆jiao小xiao溝gou,水shui量liang以yi接jie上shang底di墒shang為wei宜yi;過4~6天,再在大溝內澆第二次緩苗水,比第一次適當增加水量,但仍不要大水漫灌,水量達到大溝深度的三分之二便可。
澆水後適時中耕鬆土,既能破除土壤板結,消滅雜草,保墒防旱,促進根係下紮,又能促進肥料的分解吸收。第一次緩苗水後的2~3天,進行一次淺中耕,深度3厘米左右。第二次緩苗水後,再跟上第二次中耕鬆土,深度以不傷根為原則,一般深4~6厘li米mi為wei宜yi。這zhe兩liang次ci緩huan苗miao水shui過guo後hou,直zhi到dao第di一yi果guo穗sui坐zuo住zhu前qian,一yi般ban不bu需xu再zai澆jiao水shui。這zhe樣yang便bian可ke滿man足zu蔬shu菜cai前qian期qi對dui水shui分fen的de需xu要yao,確que保bao菜cai苗miao健jian壯zhuang生sheng長chang,為wei蔬shu菜cai高gao產chan優you質zhi奠dian定ding基ji礎chu。
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