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节水灌溉的主要技术有哪些?

据有关数据显示,我国农业用水量大约占总用水量的70%,然而,全部耕地中只有40%能够确保灌溉,而每年因缺水造成的农业损失更是高达1500亿元。那么,发展以“提高用水有效性”为原则的节水农业就显得尤为重要了。节水灌溉在这一环节中自然是重中之重。节水农业是什么?为何要大力发展“节水农业”?看看节水灌溉水肥一体化技术的先进性,你就知道了。 喷灌   喷灌是利用管道将有压喷头分散成细小水滴,均匀地喷洒到田间,对作物进行灌溉。 1应用范围   很多发达国家已广泛采用。   中心支轴式喷灌机根据作物对水分需求以及土壤墒情实现随时变量灌溉,一台中心支轴式喷灌机可以控制400亩地。但是使用中心支轴式喷灌机要求地块平整、呈正方形,且田间无障碍物,对地块要求较高,而地埋式伸缩喷灌设备的出现正好弥补了这一缺陷。地埋式伸缩喷灌设备的特点是灌溉前喷头埋于耕作层以下 ...
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翡翠棋牌 JUYOUGUANSHUJUXIANSHI,WOGUONONGYEYONGSHUILIANGDAYUEZHANZONGYONGSHUILIANGDE70%,RANER,QUANBUGENGDIZHONGZHIYOU40%NENGGOUQUEBAOGUANGAI,ERMEINIANYINQUESHUIZAOCHENGDENONGYESUNSHIGENGSHIGAODA1500YIYUAN。NEIME,FAZHANYI“TIGAOYONGSHUIYOUXIAOXING”WEIYUANZEDEJIESHUINONGYEJIUXIANDEYOUWEIZHONGYAOLE。JIESHUIGUANGAIZAIZHEIYIHUANJIEZHONGZIRANSHIZHONGZHONGZHIZHONG。JIESHUINONGYESHISHENME?WEIHEYAODALIFAZHAN“JIESHUINONGYE”?KANKANJIESHUIGUANGAISHUIFEIYITIHUAJISHUDEXIANJINXING,NIJIUZHIDAOLE。

喷灌

  PENGUANSHILIYONGGUANDAOJIANGYOUYAPENTOUFENSANCHENGXIXIAOSHUIDI,JUNYUNDIPENSADAOTIANJIAN,DUIZUOWUJINXINGGUANGAI。

1应用范围

翡翠棋牌  HENDUOFADAGUOJIAYIGUANGFANCAIYONG。

  ZHONGXINZHIZHOUSHIPENGUANJIGENJUZUOWUDUISHUIFENXUQIUYIJITURANGSHANGQINGSHIXIANSUISHIBIANLIANGGUANGAI,YITAIZHONGXINZHIZHOUSHIPENGUANJIKEYIKONGZHI400MUDI。DANSHISHIYONGZHONGXINZHIZHOUSHIPENGUANJIYAOQIUDIKUAIPINGZHENG、CHENGZHENGFANGXING,QIETIANJIANWUZHANGAIWU,DUIDIKUAIYAOQIUJIAOGAO,ERDIMAISHISHENSUOPENGUANSHEBEIDECHUXIANZHENGHAOMIBULEZHEIYIQUEXIAN。DIMAISHISHENSUOPENGUANSHEBEIDETEDIANSHIGUANGAIQIANPENTOUMAIYUGENGZUOCENGYIXIA,BUYINGXIANGNONGJIGENGZUO;GUANGAISHIPENTOUNENGGOUZIDONGDINGCHUDIMIANBINGJINXINGPENSHUI,GUANGAIJIESHUHOUYOUNENGHUISUOZHIGENGZUOCENGYIXIA。

2优点

(1)JIESHUIXIAOGUOXIANZHU,SHUIDELIYONGLVKEDA80%。YIBANQINGKUANGXIA,PENGUANYUDIMIANGUANGAIXIANGBI,1m3SHUIKEYIDANG2m3SHUIYONG。

翡翠棋牌(2)GUANSHUIJUNYUN,TURANGBUBANJIE,YOULIYUQIANGJIJIE、BAOQUANMIAO;GAISHANLETIANJIANXIAOQIHOUHENONGYESHENGTAIHUANJING。

翡翠棋牌(3)DADAJIANSHAOLETIANJIANQUXIJIANSHEJIGUANLIWEIHUHEPINGZHENGTUDIDENGDEGONGZUOLIANG。

(4)JIANSHAOLENONGMINYONGYUGUANSHUIDEFEIYONGHETOULAO,ZENGJIALENONGMINSHOURU。

翡翠棋牌(5)YOULIYUJIAKUAISHIXIANNONGYEJIXIEHUA、CHANYEHUA、XIANDAIHUA。

翡翠棋牌(6)BIMIANYOUYUGUOLIANGGUANGAIZAOCHENGDETURANGCISHENGYANJIANHUA。

微喷

WEIPENSHIXINFAZHANQILAIDEYIZHONGWEIXINGPENGUANXINGSHI。ZHEISHILIYONGSULIAOGUANDAOSHUSHUI,TONGGUOWEIPENTOUPENSAJINXINGJUBUGUANGAIDE。

1应用范围

GUOSHU、JINGJIZUOWU、HUAHUI、CAOPING、WENSHIDAPENGDENGGUANGAI。

2优点

翡翠棋牌 BIYIBANPENGUANGENGSHENGSHUI,KEZENGCHAN30%YISHANG,NENGGAISHANTIANJIANXIAOQIHOU,KEJIEHESHIYONGHUAFEI,TIGAOFEIXIAO。GUOCHANSHUIFEIYITIHUASHEBEIMUTOUZIYIBANZAI500YUAN-800YUAN。

滴喷

DIGUANSHILIYONGSULIAOGUANDAOJIANGSHUITONGGUOZHIJINGYUE10mmMAOGUANSHANGDEKONGKOUHUODITOUSONGDAOZUOWUGENBUJINXINGJUBUGUANGAI。

1应用范围

KESHIYONGYUGUOSHU、SHUCAI、JINGJIZUOWUYIJIWENSHIDAPENGGUANGAI,ZAIGANHANQUESHUIDEDIFANGYEKEYONGYUDATIANZUOWUGUANGAI。

2优点

SHIMUQIANGANHANQUESHUIDIQUZUIYOUXIAODEYIZHONGJIESHUIGUANGAIFANGSHI,QISHUIDELIYONGLVKEDA95%。DIGUANJIAOPENGUANJUYOUGENGGAODEJIESHUIZENGCHANXIAOGUO,TONGSHIKEYIJIEHESHIFEI,TIGAOFEIXIAOYIBEIYISHANG。SHUIFEIYITIHUADIGUANJISHUCONGGENBENSHANGGAIBIANLECHUANTONGGENGYUNGUANNIAN,YOUJISUANJICAOZONGDEDIGUANJISHU,NENGGENJUTURANGDEXISHUINENGLI、ZUOWUZHONGLEI、ZUOWUSHENGZHANGJIEDUANHEQIHOUTIAOJIANDENG,KEYIDINGSHIDINGLIANGDINGWEIDIBAHUNHELEFEILIAONONGYAODESHUIDISHENDAOZHIZHUDEGENBU,KEYIRANGSHUIFEIJUNHENGDISHENDIDAOMEIKEZUOWUSHANG,YIZUISHAOLIANGDESHUIPEIYUCHUZUIDUOZUIHAODEGUOSHUZHIWU。

采用喷、滴灌等设施进行灌溉,可以很好地避免产生地面径流和深层渗漏损失,使水的利用率大为提高。 
喷灌:是将灌溉水加压,通过管道,由喷嘴将水喷洒到灌溉土地上的一种灌溉方式。喷灌是目前大田作物较理想的灌溉方式,与地面输水灌溉相比,喷灌能节水50%—60%。 
微灌:有微喷灌、滴灌、渗灌、微灌等形式,是将灌溉水加压、过滤,经各级管道和灌水器灌水于作物根系附近,属于局部灌溉,只湿润部分土壤。微灌与地面灌溉和喷灌相比,可节水80%—85%。微灌与施肥结合,利用施肥器将可溶性的肥料随水施入作物根区,及时补充作物所需要水分和养分,增产效果好,微灌应用于大棚栽培和高产高效经济作物上。

CAIYONGCHUANTONGDEDIMIANGOUGUAN、QIGUAN、ZILIUMANGUAN,YAODAGAOPINGZHENGTUDI,ZHEIJIUJIADALENONGTIANSHUILIJIBENJIANSHEDEGONGZUOLIANG。CAIYONGPENGUAN、DIGUANDENGKEXUEGUANGAIHOU,TUDIJIBENBUXUPINGZHENG,ZHONGDISHIXIANLE”SANWU”,JIWUQU、WUGOU、WUGENG,DADAJIANQINGLESHUILIJIANSHEDEGONGZUOLIANG,QIEKEYIYUNYONGZIDONGKONGJISHU,SHIXIANZAISHINEIKONGZHIDATIANZHONGNONGZUOWUDEZHONGZHI,YOULICUJINLENONGYEXIANGJIXIEHUA、CHANYEHUA、XIANDAIHUAFANGXIANGDEFAZHAN。



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