銀杏各器官含有不同量的水分。根、莖、枝、葉含水量50%左右，果實含水量約80%。銀(yin)杏(xing)的(de)生(sheng)命(ming)活(huo)動(dong)是(shi)以(yi)水(shui)為(wei)介(jie)質(zhi)的(de)
，水(shui)分(fen)能(neng)使(shi)樹(shu)體(ti)各(ge)部(bu)分(fen)保(bao)持(chi)膨(peng)脹(zhang)和(he)新(xin)鮮(xian)狀(zhuang)態(tai)。所(suo)以(yi)
，水(shui)分(fen)在(zai)銀(yin)杏(xing)的(de)生(sheng)命(ming)活(huo)動(dong)中(zhong)是(shi)不(bu)可(ke)缺(que)少(shao)的(de)生(sheng)態(tai)因(yin)子(zi)。

銀yin杏xing的de根gen係xi比bi較jiao發fa達da，依yi靠kao根gen壓ya吸xi水shui供gong給gei樹shu體ti各ge個ge部bu分fen的de需xu要yao，銀yin杏xing葉ye片pian的de蒸zheng騰teng作zuo用yong，形xing成cheng蒸zheng騰teng拉la力li，這zhe種zhong拉la力li成cheng為wei根gen係xi吸xi取qu水shui分fen的de主zhu要yao動dong力li。而er如ru果guo我wo們men需xu要yao測ce定ding銀yin杏xing葉ye片pian中zhong葉ye落luo素su的de含han量liang我wo們men推tui薦jian使shi用yong葉綠素測定儀、SPAD-502葉綠素含量儀，它是一種手持式葉綠素含量儀，keyizhijiedaidaotianjianjinxingjishicedinghejilu，xiangdangfangbiankuaijie。yinxinggenbudexishuiliangyuturangchishuiliangyouguan，turangchishuizaishuifendangliangzhibaohedefanweineiturangchishuiliangyuegao
，xishuiyuerongyi。shuifenjingguoshudaozuzhi

，songdaoshutigeqiguan，baochileshuifenpingheng，turangchishuiliangzaishuifendangliangyixiashi，jiuhuichuxianzhengtengdayuxishou，shutizhiyeweinianxiachui
，qikongbianxiao，zhengtengjianruo，yiqiushuifenpinghengzanshihuifu。suoyiyinxingshutideshuifenshijingchangchuyudongtaipinghengzhizhong， 這zhe是shi由you銀yin杏xing的de調tiao結jie機ji製zhi和he諸zhu多duo環huan境jing因yin子zi相xiang互hu作zuo用yong的de結jie果guo。銀yin杏xing枝zhi繁fan葉ye茂mao，根gen係xi發fa達da
，從cong根gen部bu吸xi收shou的de水shui分fen通tong過guo葉ye片pian的de蒸zheng騰teng作zuo用yong到dao大da氣qi中zhong
，隻zhi有you2－3%的水分用於合成碳水化合物。

銀杏抗旱能力較強。在年降水量1000毫hao米mi左zuo右you的de地di區qu，成cheng年nian及ji古gu老lao樹shu一yi般ban都dou不bu需xu灌guan溉gai，作zuo為wei商shang品pin經jing營ying的de果guo園yuan
，在zai生sheng長chang發fa育yu主zhu要yao時shi期qi仍reng應ying適shi當dang澆jiao水shui。根gen據ju年nian周zhou期qi內nei的de物wu候hou現xian象xiang，如ru早zao春chun幹gan旱han，樹shu液ye流liu動dong，，萌meng芽ya開kai始shi，就jiu要yao及ji時shi春chun灌guan，否fou則ze 將出現生理幹旱而“抽條”。huaqiqueshui

，rongyiluohua
，yingxiangchuanfenshoujing，xuyaozaikaihuaqianjiehezhuifeijiaoshui。guoshixunsufayuqi，xushuilianggengda，ruguogongshuibuzu
，huijiangdipinzhihechanliang。youguofayuchanghezhiyewangshengshengchangtongbu
，shishiguangai
，dadaozhifanyemao
，zhitiaochongfenchengshu，keyitigaoyuedongxing。

同時，在雨季要特別注意排水防澇，並要挖好排水溝。