نتایج جستجو برای: waterlogging
تعداد نتایج: 1026 فیلتر نتایج به سال:
Another experiment was carried out in which the opposite environmental conditions were obtained, viz., those of waterlogging. In this a comparison was made between applying Ceresan on the cutting and on the soil. Co.290 was planted, and after planting, 11 inches of rain fell in 18 days; the field was under water for some considerable time. In a previous paperreference was made to the beneficial...
When crop plants are subjected to soil waterlogging, or an anaerobic condition, their root and shoot systems respond differently. A variety of morphological and anatomical alterations develop in the root system. Reduction of the root respiration rate has been reported in both flooding-tolerant and intolerant species. Besides alcoholic fermentation, several diverse fermentative bypasses take pla...
Insect fossils extracted by bulk-sieving from samples of deposits at the Brooks site, Winchester, were examined in an attempt to assess the insect content of the original sediment. Remains preserved by mineralisation and anoxic waterlogging were numerous. Preservation of the latter was excellent in a series of cut features of Roman, Saxon and Medieval date. It is recommended that samples of raw...
Floods and waterlogging are among the main natural disasters affecting agriculture, causing land inundation or excess soil water during after extreme rainfall events, which drastically affects crop productivity food security [...]
iran is ranked fourth for saline-sodic soils in asia following china, india and pakistan. therefore, if coupled with waterlogging, drainage would be an inevitable and indispensable activity agriculture in most irrigated parts of iran. drain installation depth is one of the main economic as well as environmental challenges in design and construction of drainage systems. deep pipe drain installat...
Waterlogging simulation is a key technology for solving urban waterlogging problems. The current modeling process relatively complex and requires high basic data, which not conducive to rapid popularization. In this study, we evaluated the correlation between rainfall water using following factors: terrain, evaporation, infiltration, pipe drainage capacity, river flood level. By quantifying inf...
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