| Cite this article: | 樊丽琴.种植方式和灌溉水质对银北灌区土壤温度、盐分和玉米产量的影响[J].灌溉排水学报,,():-. |
| FAN Li Qin.种植方式和灌溉水质对银北灌区土壤温度、盐分和玉米产量的影响[J].灌溉排水学报,,():-. |
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| Effects of Planting Methods and Irrigation Water Quality on Soil Temperature, Salinity and Maize Yield in Yinbei Irrigation Area |
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FAN Li Qin
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Institute of Agricultural Resources and Environment, Ningxia Academy of Agriculture and Forestry Sciences,
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| Abstract: |
| 【Background】The shortage of fresh water resources and soil salinization are two major factors restricting agricultural sustainable utilization of saline-alkali land in Yinbei Irrigation District of Ningxia. Rational utilization of brackish water resources and planting mode of rain collection are effective ways to solve the shortage of water resources and improve crop yield. 【Objective】Planting patterns of saving irrigation and controlling salt for maize was explorered in this paper, in order to provide a technical support for more effective planting patterns of crop and agricultural sustainable development of saline-alkali land.. [Method]the method of planting pattern combined with irrigation water quality was adopted. twelve treatments were set up, included five planting patterns for maize（half film mulching (HM), ridge-furrow planting with white film mulching over ridge only (RWF), ridge-furrow planting with white film mulching over ridge and maize straw mulching over furrow (RWFM), ridge-furrow planting with black film mulching over ridge only (RBF), ridge-furrow planting with black film mulching over ridge and corn straw mulching over furrow ( RBFM)）and three water quality for irrigation (yellow river, low-salinity water, high-salinity water).The effects of different treatments on soil temperature and soil salinity were studied. 【Result】(1) Compared with HM, at the jointing stage, RWF decreased the soil temperature at 5 cm depth below the surface by 3.04 ℃ at noon. Under different water quality for irrigation, the soil temperature of 5~ 25cm depth was increased with high-salinity irrigation. Compared with Rellow River water for irrigation, high-salinity water for irrigation increased soil temperature of 5 ~ 25cm depth. (2)“low-salinity water+RWF”treatment had the same salt-controlling effect as Yellow River irrigation. Compared with those before sowing, the total salt content in 0-60 cm soil layer increased in other growth stages for maize under different planting patterns. At jointing stage, the salinity of 0-20 cm soil layer increased by 18.4%~31.4%, and RMF was the lowest. At the tasseling stage, the salinity of 0-20 cm soil layer and 40-60 cm soil layer increased by 10.6% ~ 22.5% and 8.9% ~ 25.4%, respectively, showing the lowest RWF. The soil salinity in 0-40 cm soil layer showed an increasing trend with the increase of salinity of irrigation water.（3）Compared with HM, RWF didn’t decrease grain yield of maize under the irrigation with light-saline water, and ridge-furrow planting for maize increased grain yield under the irrigation with high-saline water. 【Conclusion】In Yinbei Irrigation District of Ningxia.,maize planting pattern of RWF can effectively reduce the soil temperature at 5 cm depth below the surface. Under high-salinity water irrigation, RWF can controll the salinity increment in 0-20 cm soil layer, and increase the grain yield of maize. |
| Key words: maize planting pattern; irrigation water quality; ridge-furrow planting with white film mulching over ridge only; soil temperature; soil salinity; grain yield of maize |
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