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　　三九養(yǎng)生堂記者 鄧肯·蓋伊 報(bào)道

精彩|　　農(nóng)??(nong)諺?(yan)云??(yun)“霜??(shuang)降??(jiang)殺??(sha)百?(bai)草?(cao)”??，霜?(shuang)與??(yu)農(nóng)??(nong)業(yè)??(ye)生??(sheng)產(chǎn)??(chan)密??(mi)切??(qie)相??(xiang)關(guān)??(guan)??。??秋??(qiu)季??(ji)的??(de)第??(di)一??(yi)次??(ci)霜??(shuang)稱??(cheng)“早??(zao)霜?(shuang)”或??(huo)“初??(chu)霜??(shuang)”??，春??(chun)季??(ji)的??(de)最?(zui)后??(hou)一??(yi)次??(ci)霜?(shuang)叫??(jiao)“晚?(wan)霜??(shuang)”或??(huo)“終??(zhong)霜??(shuang)”??，從??(cong)終??(zhong)霜??(shuang)到??(dao)初??(chu)霜??(shuang)的??(de)時(shí)??(shi)段??(duan)計(jì)??(ji)算??(suan)為??(wei)農(nóng)?(nong)業(yè)??(ye)上??(shang)的??(de)“無(wú)??(wu)霜??(shuang)期??(qi)”??，這??(zhe)是??(shi)喜??(xi)溫??(wen)作??(zuo)物??(wu)的??(de)生??(sheng)長(zhǎng)??(chang)期??(qi)??，也??(ye)是??(shi)農(nóng)??(nong)民??(min)集??(ji)中??(zhong)播??(bo)布??(bu)、管??(guan)理??(li)和??(he)收??(shou)獲??(huo)農(nóng)??(nong)作??(zuo)物??(wu)的?(de)時(shí)??(shi)間??(jian)??。相??(xiang)對(duì)??(dui)于??(yu)霜??(shuang)這??(zhe)種??(zhong)自??(zi)然??(ran)天??(tian)氣??(qi)現(xiàn)??(xian)象?(xiang)??，“霜??(shuang)凍??(dong)”特??(te)指?(zhi)一??(yi)種?(zhong)農(nóng)??(nong)業(yè)??(ye)氣??(qi)象??(xiang)災(zāi)?(zai)害??(hai)??，如??(ru)果??(guo)在??(zai)比??(bi)較??(jiao)溫??(wen)暖??(nuan)的??(de)日??(ri)子??(zi)里??(li)氣??(qi)溫??(wen)突??(tu)然??(ran)下??(xia)降??(jiang)??，致?(zhi)使??(shi)農(nóng)??(nong)作??(zuo)物??(wu)植??(zhi)株??(zhu)內(nèi)??(nei)部??(bu)水??(shui)分??(fen)結(jié)??(jie)冰?(bing)??，細(xì)??(xi)胞??(bao)就??(jiu)會(huì)??(hui)受??(shou)到??(dao)破??(po)壞??(huai)而??(er)死??(si)亡??(wang)??。發(fā)??(fa)生??(sheng)霜??(shuang)凍??(dong)時(shí)??(shi)未??(wei)必??(bi)伴??(ban)隨??(sui)有??(you)白??(bai)霜??(shuang)??，白??(bai)霜??(shuang)也??(ye)不??(bu)一??(yi)定??(ding)會(huì)??(hui)引??(yin)發(fā)?(fa)農(nóng)??(nong)作??(zuo)物??(wu)霜?(shuang)凍??(dong)??，真??(zhen)正??(zheng)威?(wei)脅??(xie)農(nóng)?(nong)作??(zuo)物??(wu)生??(sheng)長(zhǎng)??(chang)的??(de)是??(shi)“凍??(dong)”而??(er)非??(fei)“霜??(shuang)”??。　　重??(zhong)陽(yáng)??(yang)賞??(shang)菊??(ju)登??(deng)高??(gao)處??(chu)

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