做好防雨工作防雨水進棚
每(mei)年(nian),都(dou)有(you)大(da)量(liang)的(de)蔬(shu)菜(cai)棚(peng)室(shi)因(yin)為(wei)防(fang)護(hu)不(bu)當(dang),雨(yu)水(shui)浸(jin)漬(zi)而(er)受(shou)損(sun),尤(you)其(qi)是(shi)種(zhong)植(zhi)蔬(shu)菜(cai)多(duo)年(nian)的(de)老(lao)棚(peng),常(chang)因(yin)雨(yu)水(shui)倒(dao)灌(guan)進(jin)棚(peng)而(er)坍(tan)塌(ta)。因(yin)此(ci),一(yi)定(ding)要(yao)采(cai)取(qu)措(cuo)施(shi)做(zuo)好(hao)防(fang)雨(yu)工(gong)作(zuo)。
一要提前挖好排水渠防雨水倒灌。可在棚室前臉處挖一條與棚室等長的排水溝,寬約0.5米,深約30厘米,好讓棚室上留下的水隨時流走。
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加固棚體防大風危害
大風來襲,棚膜很容易被掀掉、扯壞,特別是拱棚的棚膜,受害更嚴重,設施老化的拱棚甚至能被大風吹塌,建議菜農加強預防。
一yi要yao加jia固gu棚peng體ti,修xiu補bu棚peng膜mo。很hen多duo舊jiu棚peng水shui泥ni立li柱zhu部bu分fen折zhe斷duan,竹zhu竿gan老lao舊jiu,棚peng膜mo破po損sun多duo,抗kang風feng能neng力li差cha,大da風feng來lai臨lin前qian應ying注zhu意yi棚peng體ti和he棚peng膜mo的de維wei護hu。對dui於yu折zhe斷duan的de立li柱zhu和he重zhong點dian部bu位wei要yao及ji時shi進jin行xing加jia固gu,更geng換huan舊jiu竹zhu竿gan,增zeng強qiang抗kang風feng能neng力li,同tong時shi注zhu意yi檢jian查zha棚peng膜mo破po損sun情qing況kuang,有you漏lou洞dong的de及ji時shi修xiu補bu。
二要增設壓膜繩。增加壓膜繩的數量,固定好棚膜,並在門口設置雙層薄膜,把拱棚出入口封堵嚴密,阻止氣流進入。
覆蓋防蟲網或遮陽網減輕冰雹危害
冰雹來臨前,及時覆蓋與棚室等長、等deng寬kuan的de防fang蟲chong網wang或huo遮zhe陽yang網wang,並bing拉la緊jin,使shi防fang蟲chong網wang或huo遮zhe陽yang網wang與yu棚peng膜mo表biao麵mian保bao持chi一yi定ding距ju離li,可ke減jian輕qing冰bing雹bao對dui棚peng膜mo的de衝chong擊ji,避bi免mian棚peng膜mo被bei冰bing雹bao砸za破po。棚peng膜mo一yi旦dan被bei砸za破po,要yao及ji時shi進jin行xing粘zhan補bu,以yi防fang雨yu水shui進jin棚peng。另ling外wai,冰bing雹bao進jin棚peng後hou,濺jian起qi的de淤yu泥ni能neng遮zhe蓋gai幼you苗miao,給gei蔬shu菜cai造zao成cheng機ji械xie損sun傷shang,除chu了le及ji時shi淋lin洗xi葉ye片pian上shang的de淤yu泥ni外wai,還hai要yao緊jin接jie著zhe噴pen施shi一yi次ci殺sha菌jun劑ji和he葉ye麵mian肥fei,防fang止zhi病bing菌jun從cong植zhi株zhu傷shang口kou侵qin入ru,同tong時shi衝chong施shi生sheng根gen類lei肥fei料liao,促cu使shi蔬shu菜cai盡jin快kuai恢hui複fu長chang勢shi。
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