| Impacts of different soil water storage to water consumption rule of watermelon in land of gravel-mulching |
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| DOI：10.7606/j.issn.1000-7601.2014.01.016 |
| Key Words: land with gravel-mulching soil water storage before sowing watermelon water consumption rule |
| Author Name | Affiliation | | TAN Jun-li1,2,3, TIAN Jun-cang1,2,3, WANG Xi-na4, LI Ying-hai1,2,3, ZHAO Xiao-yong1,2,3 | (1.宁夏大学土木与水利工程学院， 宁夏 银川 750021
2.宁夏节水灌溉与水资源调控工程技术研究中心, 宁夏 银川 750021
3.旱区现代农业水资源高效利用教育部工程研究中心， 宁夏 银川 750021； 4.宁夏大学农学院， 宁夏 银川 750021) |
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| Abstract: |
| Through the field experiments, have researched the dynamic changes of different soil water storage to the soil water, impacts of water consumption rule of watermelon, yield and water use efficiency on gravel field. The results showed that irrigation before sowing to increase the soil water content in 1 m soil layer. But if the irrigating water quota was too much as 70 m3·667m-2 or 55 m3·667m-2, will be caused the deep percolation losses. The water consumption of watermelon during earlier growing stage was dropped with the decrease of soil water storage in 1 m soil layer during earlier growing stage. When soil water storage before sowing was at the range of 222 to 270 mm, the water consumption of watermelon will be decreased with increase of irrigation amount at the peak period of water requirement. The different soil water content before sowing will be influenced the soil water content in 1 m soil layer during harvesting season. Comprehensive consideration of watermelon fruits yield and its water use efficiency, when the rainfal
l was 85 mm during watermelon growth stage, soil water storage of 250 mm in 1 m soil layer before sowing could guarantee its normal growth in the test area. In addition, the treatment of summer fallow for the land with gravel-mulching, will enhanced soil water content, the soil water storage increased 2.7 mm in 1 m soil layer. It provides suitable soil water condition for subsequent crop. |
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