玉米地下滴灌工程設(shè)計畢業(yè)設(shè)計

1、本科畢業(yè)設(shè)計本科畢業(yè)設(shè)計題目廣西紅河農(nóng)場玉米地下滴灌工程設(shè)計學(xué)院專業(yè)畢業(yè)屆別姓名指導(dǎo)教師職稱甘肅農(nóng)業(yè)大學(xué)教務(wù)處制二〇一五年五月目錄目錄關(guān)鍵詞..............................................................1AbstractAbstract............................................................1KeyKeywdsw

2、ds...........................................................1前言................................................................11基本資料..........................................................21.1當(dāng)?shù)厮慕?jīng)濟(jì)概況................

3、................................21.2玉米生長概況....................................................41.3玉米灌水時期....................................................42滴管系統(tǒng)設(shè)計......................................................52

4、.1工程規(guī)劃布置....................................................52.1.1水源工程......................................................52.1.2首部樞紐......................................................52.1.3輸配水管網(wǎng).....................

5、...............................62.1.4灌水器的選擇..................................................62.2參數(shù)初定........................................................62.2.1設(shè)計技術(shù)依據(jù)..................................................6

6、2.2.2設(shè)計耗水強(qiáng)度..................................................62.2.3設(shè)計土壤濕潤比P...............................................72.2.4灌溉設(shè)計保證率................................................72.2.5設(shè)計灌水均勻系數(shù).......................

7、.......................72.2.6計劃濕潤層深度Z...............................................72.1.7土壤田間持水量................................................72.1.8灌溉水利用系數(shù)................................................72.1.9系統(tǒng)工作小時數(shù).

8、...............................................72.1.10灌水器設(shè)計允許流量偏差率.....................................72.1.11允許水頭偏差率hv.............................................72.1.12水量平衡原理...........................................

9、......83灌溉制度..........................................................93.1灌水定額........................................................93.2灌水周期........................................................93.3一次灌水延續(xù)時間..........

10、......................................94滴灌工作制度.....................................................104.1輪灌組數(shù).......................................................114.2輪灌組的劃分方法............................................

11、...114.3各級管道流量計算...............................................124.4輪灌組數(shù)校核...................................................125灌水小區(qū)水力設(shè)計.................................................135.1水力設(shè)計的要求與任務(wù)....................