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首页> 外文期刊>Journal of the Indian Society of Soil Science >Effects of cyclic and blending uses of saline and good quality water on soil salinisation and crop yields under pearl millet-wheat rotation.
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Effects of cyclic and blending uses of saline and good quality water on soil salinisation and crop yields under pearl millet-wheat rotation.

机译：珍珠和小米小麦轮作条件下，循环使用盐和优质水对混合盐分和作物产量的影响。

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摘要

This study was conducted to investigate the most suitable mode of using saline underground water in a pearl millet-wheat crop rotation where canal supplies are inadequate and/or are not assured, and to evaluate the effect of such options on crop yield, soil salinity and available water capacity. Blended and cyclic combinations of saline and canal water were applied to a pearl millet-wheat crop rotation. Crop yield and soil salinity were monitored for two years during 2003-04 and 2004-05 at the research farm of Chaudhary Charan Singh Haryana Agricultural University, Hisar, India. The eight treatments are: saline (S, 8.4 dS/m) and canal water (C, 0.4 dS/m) in cyclic (1C:1S, 1S:1C, 2C:1S, 2S:1C and 1C:RTS, rest with saline water) and mixing (Mix 2:1 and Mix 1:2 of canal and saline water) mode. The grain yield reduced significantly (P<0.05) when pearl millet and wheat crops were irrigated with saline (S) as compared to canal irrigation (C), the reductions in the mean values were 19.1 and 37%, respectively over the non-saline treatment. Moreover, the yields were reduced further in the second season compared to the preceding one in all the treatments. The differences in grain yields obtained in 1C:RTS and mixing (Mix 1:2 and Mix 2:1) treatments were also significant as compared to the yields in the control treatment. Salt accumulation in the soil profile due to the saline water irrigation in the preceding year and the seasonal climatic variations were the likely causes of the yield reduction. Comparing the different modes of irrigation, 10.5, 8.6 and 3.3% higher pearl millet grain yields were obtained in 2C:1S, 1C:1S and 1S:1C treatments of alternate irrigation of canal and saline water, respectively, as compared to the blending of canal and saline waters in the ratio of 1:2. Water use efficiency in pearl millet varied from 7.8 to 8.9 kg ha-r mm-r in the different irrigation treatments. The maximum value of WUE was obtained in the 2C:1S treatment (8.9 kg/ha per mm) and the lowest was observed in saline water use (S). Other treatments showed intermediate values of WUE. In wheat, the maximum WUE 14.3 kg/ha per mm was recorded in canal water treatment. The highest ECe (10 dS/m) in 0-0.15 m soil layer was observed in saline water treatment.
机译：进行这项研究的目的是调查在渠道供应不足和/或不确定的情况下，在珍珠粟-小麦作物轮作中使用盐水的最合适模式，并评估这些方案对作物产量，土壤盐分和盐分的影响。可用水量。将盐水和运河水的混合和循环组合应用于小米-小麦作物的轮作。在印度希萨尔的乔杜里·查兰·辛格·哈里亚纳邦农业大学的研究农场，于2003-04年和2004-05年对作物的产量和土壤盐分进行了两年的监测。八种处理方法是：循环（1C：1S，1S：1C，2C：1S，2S：1C和1C：RTS）中的生理盐水（S，8.4 dS / m）和运河水（C，0.4 dS / m）。盐水）和混合（运河与盐水混合2：1和混合1：2）模式。与渠道灌溉（C）相比，用盐溶液（S）灌溉珍珠小米和小麦作物时，谷物产量显着降低（P <0.05），与非盐碱相比，均值分别降低19.1％和37％治疗。此外，在所有处理中，第二季的产量均比前一季进一步降低。与对照处理相比，在1C：RTS和混合（混合1：2和混合2：1）处理中获得的谷物单产差异也很明显。上一年的盐水灌溉和季节性气候变化导致土壤剖面中盐分累积，可能是减产的原因。比较不同的灌溉方式，与混合灌溉相比，在分别以运河和盐水交替灌溉的2C：1S，1C：1S和1S：1C处理中，珍珠粟籽粒的产量分别提高了10.5％，8.6％和3.3％。运河和盐水的比例为1：2。在不同的灌溉方式下，珍珠粟的水分利用效率在7.8至8.9 kg ha-r mm-r之间变化。在2C：1S处理中获得了最大的WUE值（8.9 kg / ha / mm 2），而在盐水使用中却观察到了最小的WUE（S）。其他处理显示出WUE的中间值。在小麦中，运河水处理中记录的最大WUE为14.3 kg / ha / mm。在盐水处理中，在0-0.15 m的土壤层中观察到最高的ECe（10 dS / m）。

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