| 1. | Plastic mulching effects on potato under drip irrigation and furrow irrigation 滴灌与沟灌马铃薯覆膜效应研究
|
| 2. | Furrow irrigation is a common way used in wide - row crops 沟灌是大田宽行作物灌溉中比较常见的一种灌水方式。
|
| 3. | Study on alternative furrow irrigation on film - mulched maize in desert oasis area 干旱沙漠绿洲区地膜玉米控制性隔沟交替灌溉节水技术研究
|
| 4. | But conventional furrow irrigation is difficult to meet the demands that crops are irrigated at proper time and with suitable amount of water 但常规沟灌很难满足灌溉过程中对灌水适时、适量的要求。
|
| 5. | Comparison of the characteristics of soil biological in sea - island cotton field between drip irrigation under mulch and furrow irrigation in tarim reclamation area 膜下滴灌与沟灌海岛棉田土壤微生物特性的比较
|
| 6. | Aimed at the landform and the shortage of water resource in hilly mountain areas , the field experiments of surge furrow irrigation and continuous irrigation were carried out 本文针对丘陵山区地形和水资源短缺等特点,采用正交试验设计进行波涌灌和连续灌田间试验。
|
| 7. | In the third chapter , the ratio of soil evaporation to crop transpiration under different furrow irrigation ways adopted in summer maize field was analyzed by using the measured data in lysimeters 与固定隔沟灌相比,交替隔沟灌土沟的干湿交替循环不会使根区部分土壤出现长期极度干燥的情况,因此对作物根系的生长和吸收比较有利。
|
| 8. | Based on the data , infiltration parameters k , , ai and bi were obtained according to the flow advance and recession course of the stream in the furrow , on the base of which , the model of surge furrow irrigation was set up 基于田间实测的田间入渗及灌水试验资料,利用灌水沟水流推进、消退过程,求得波涌灌入渗参数k , a , a _ i和b _ i ,并由此得出波涌灌的入渗模型。
|
| 9. | The estimation methods of water requirement , and determination of basal crop coefficient and soil evaporation coefficient under the controlled alternative furrow irrigation in summer maize were studied and verified in the fifth chapter ( 4 )夏玉米田棵间土壤蒸发主要发生在灌后几天表层土壤比较湿润的时期内,其中表层土壤含水率和叶面积指数是影响土面蒸发的两个基本因素。
|
| 10. | And then , the irrigation performance including irrigation efficiency , application efficiency and distribution uniformity were evaluated by using infiltration parameters and soil parameters . the results indicate surge furrow irrigation is suitable to hilly mountain areas 利用入渗参数以及田间基本参数,对灌水质量:储水效率e _ n 、灌水效率e _ a和灌水均匀度e _ d进行了评价,评价结果表明在丘陵山区适宜进行波涌灌溉。
|