在(Zai)东(Dong)北(Bei)冬(Dong)季(Ji)苗(Miao)木(Mu)养(Yang)护(Hu)时(Shi),(?)为(Wei)了(Liao)提(Ti)高(Gao)来(Lai)年(Nian)的(De)苗(Miao)木(Mu)成(Cheng)活(Huo)率(Lu),(?)一(Yi)定(Ding)要(Yao)浇(Jiao)一(Yi)次(Ci)封(Feng)冻(Dong)水(Shui)。(?)营(Ying)口(Kou)园(Yuan)林(Lin)绿(Lu)化(Hua)工(Gong)程(Cheng)
意(Yi)思(Si)就(Jiu)是(Shi)浇(Jiao)完(Wan)水(Shui)后(Hou)在(Zai)植(Zhi)被(Bei)上(Shang)面(Mian)形(Xing)成(Cheng)一(Yi)层(Ceng)冰(Bing)面(Mian),(?)并(Bing)且(Qie)将(Jiang)表(Biao)土(Tu)形(Xing)成(Cheng)冻(Dong)土(Tu)。(?)
一(Yi)方(Fang)面(Mian):(?)保(Bao)持(Chi)了(Liao)土(Tu)地(Di)的(De)湿(Shi)润(Run),(?)来(Lai)年(Nian)开(Kai)春(Chun)冰(Bing)层(Ceng)融(Rong)化(Hua),(?)土(Tu)地(Di)水(Shui)分(Fen)充(Chong)足(Zu),(?)利(Li)于(Yu)树(Shu)木(Mu)生(Sheng)长(Chang);(?)

另(Ling)一(Yi)方(Fang)面(Mian),(?)冰(Bing)层(Ceng)和(He)冻(Dong)土(Tu)层(Ceng)为(Wei)植(Zhi)物(Wu)根(Gen)系(Xi)提(Ti)供(Gong)保(Bao)护(Hu),(?)相(Xiang)当(Dang)于(Yu)给(Gei)植(Zhi)物(Wu)盖(Gai)了(Liao)一(Yi)层(Ceng)“(?)棉(Mian)被(Bei)”(?),(?)就(Jiu)像(Xiang)下(Xia)雪(Xue)一(Yi)样(Yang)的(De)原(Yuan)理(Li),(?)冻(Dong)土(Tu)层(Ceng)下(Xia)的(De)温(Wen)度(Du)可(Ke)以(Yi)保(Bao)护(Hu)秧(Yang)苗(Miao)根(Gen)系(Xi)不(Bu)受(Shou)伤(Shang)害(Hai),(?)来(Lai)年(Nian)长(Chang)势(Shi)良(Liang)好(Hao)。(?)
灌(Guan)冻(Dong)水(Shui)后(Hou)苗(Miao)木(Mu)根(Gen)系(Xi)周(Zhou)围(Wei)的(De)土(Tu)壤(Rang)结(Jie)冻(Dong)的(De)时(Shi)候(Hou)就(Jiu)是(Shi)湿(Shi)冻(Dong)了(Liao),(?)不(Bu)是(Shi)干(Gan)冻(Dong)。(?)湿(Shi)冻(Dong)的(De)好(Hao)处(Chu)就(Jiu)是(Shi)能(Neng)使(Shi)热(Re)量(Liang)的(De)传(Chuan)递(Di)相(Xiang)对(Dui)稳(Wen)定(Ding)((?)例(Li)如(Ru)一(Yi)般(Ban)水(Shui)井(Jing)中(Zhong)的(De)水(Shui)在(Zai)冬(Dong)天(Tian)温(Wen)度(Du)也(Ye)不(Bu)会(Hui)太(Tai)低(Di))(?),(?)让(Rang)根(Gen)系(Xi)周(Zhou)围(Wei)保(Bao)持(Chi)在(Zai)一(Yi)个(Ge)相(Xiang)对(Dui)恒(Heng)温(Wen)的(De)环(Huan)境(Jing),(?)干(Gan)冻(Dong)的(De)话(Hua)吸(Xi)热(Re)快(Kuai)散(San)热(Re)也(Ye)快(Kuai),(?)对(Dui)苗(Miao)木(Mu)根(Gen)系(Xi)影(Ying)响(Xiang)较(Jiao)大(Da)。(?)第(Di)二(?)点(Dian)就(Jiu)是(Shi)能(Neng)保(Bao)证(Zheng)冬(Dong)季(Ji)苗(Miao)木(Mu)需(Xu)要(Yao)的(De)少(Shao)量(Liang)水(Shui)分(Fen)。(?)