In effecting recharge by flooding, water is spread over the land surface in a thin sheet . 以漫灌法所进行的补给是将水成片地铺洒在地面上。
2.
( 1 ) the actual amount of water used to irrigate in the filtration irrigated area was reduced by 58 . 15 % to 81 . 63 % compared with the general irrigated area , and the ultilization ratio of the moisture content increases by 50 . 5 % to 81 . 7 % 综合考虑灌水量与产量的合理成本效益比和旱区的缺水问题，优先采用灌水量为133 . 33mm的渗灌。水分利用效率达到23 . 1kg mm ? hm ~ 2 ，实际灌水量比漫灌区下降了69 . 88 ，效果明显。
3.
A experiment on the water movement rule of the soil had been done before the field experiment , and then four irrigation regimes were placed in it , that is to say , three sub - irrigated areas hi contrast to a general irrigated area 在大田试验前，做了渗灌土壤水分运动规律试验，然后，在大田试验中设置了四个处理，即：三个水平渗灌区和一个漫灌区对照。结果表明： ( 1 )渗灌区的实际灌水量比漫灌区下降了58 . 15 81 . 63 。
4.
Three wheat cultivars , yannong 19 ( with spread plant type ) , jimai 20 ( with semi - spread plant type ) and taishan 23 ( with erect plant type ) , were used to investigate the wue ( water use efficiency ) change under raised bed planting with furrow irrigation and conventional flat planting with flood irrigation 摘要为寻找提高小麦水分利用效率的途径，以株型扩张品种烟农19 、株型紧凑品种泰山23和株型半扩张品种济麦20为材料，比较研究了垄作（小水沟内渗灌）和平作（大水漫灌）两种栽培模式下小麦的水分利用效率。
5.
Under the filtration irrigation , the water content could remained a fit range from 14 to 22 percent in the layer of 20 to 70 cm deep , however , the general irrigation could reduce the moisture utilization during the growing period of the maize . ( 4 ) filtration irrigation could well adjust the soil temperature so that the root system made a sufficient absorption of the moisture and mineral nutrinents 从土壤含水量测定分析看，在20 70cm土层，渗灌水分含量一直维持在玉米正常所需的14 22范围内，而漫灌分两次灌水，在每次灌水前一段时间水分含量要下降到14以下，出现水分胁迫，尤其影响到玉米的前期生长。
6.
Considering of the above advantages and the problem of water shortage , the area b should be adopted . ( 2 ) filtration irrigation accelerated the growth of the individual maize plants . the area b and c have good basement of photosynthesis and advantage of growth which was good for increasing the seeds > yield and photosynthesis , eventually to reach a high yield and high seed ratio 从叶位、全株叶面积和株高来看，渗灌b 、 c区较渗灌a和漫灌d都有良好的光合作用基础和生长发育优势，这种株型有利于籽粒产量的增加，群体光合作用增加，籽粒积累增加，最终的产量都达到10000kg hm ~ 2以上的高产量和81以上的出籽率。
