Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xi'an, China.
Institute of Land Engineering and Technology, Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xi'an, China.
Sci Rep. 2023 Mar 27;13(1):4957. doi: 10.1038/s41598-023-32038-0.
The soil water content and water consumption of deep layer (200-1000 cm) of sloping farmland, grassland and Jujube orchard in Yuanzegou small watershed in the loess hilly region were studied. The results showed that (1) the soil moisture content of sloping farmland, grassland and Jujube orchard increased at first and then decreased at 0-200 cm, with mean values of 11.91%, 11.23% and 9.99% respectively; From 200 to 1000 cm, the soil moisture content decreased slowly and tended to be stable, with mean values of 11.77%, 11.62% and 9.96% respectively. (2) 200-1000 cm, the soil water storage ranged in the order of sloping farmland > grassland > Jujube orchard, with mean values of 148.78, 145.28 and 121.11 mm respectively. (3) In the 200-1000 cm soil layer, the water consumption of the Jujube orchard ranged from 21.67 to 32.97 mm, and that of grassland ranged from - 4.47 to 10.32 mm, the water consumption of deep soil in Jujube orchard was significantly higher than that in grassland (p < 0.05)., Although the Jujube orchard had obvious deep soil moisture consumption, it was insufficient to cause serious soil drying and increased farmers' income, so it can be planted locally, but the planting density should be reasonable and water-saving engineering technology should be adopted.
在黄土丘陵沟壑区袁泽沟小流域，研究了坡耕地、草地和枣园深层（200-1000cm）土壤水分含量和耗水量。结果表明：（1）坡耕地、草地和枣园0-200cm土壤含水量先增加后减少，平均值分别为 11.91%、11.23%和 9.99%；从 200cm 到 1000cm，土壤含水量缓慢下降并趋于稳定，平均值分别为 11.77%、11.62%和 9.96%。（2）200-1000cm，土壤储水量依次为坡耕地>草地>枣园，平均值分别为 148.78、145.28 和 121.11mm。（3）在 200-1000cm 土层中，枣树耗水量为 21.67-32.97mm，草地耗水量为-4.47-10.32mm，枣树深层土壤耗水量明显高于草地（p<0.05）。虽然枣树有明显的深层土壤耗水，但不足以造成严重的土壤干燥，增加农民收入，因此可以在当地种植，但种植密度应合理，并采用节水工程技术。
