1. 覆砂和灌水量对退耕压砂地生态枣林 土壤水热及枣果产量的影响.
- Author
-
刘巧玲, 李王成, 赵广兴, 贾振江, 安文举, 王洁, and 穆敏
- Subjects
- *
WATER efficiency , *SOIL moisture , *IRRIGATION water , *SOIL heating , *FRUIT yield , *FOREST soils , *WATER storage , *HYDROTHERMAL deposits - Abstract
:In this study, we aimed to investigate the effect of amount of irrigation water under gravel-sand mulch conditions on hydrothermal parameters of soil and fruit yield of date palm forests in fallow gravel-sand mulched field. The field experiment was conducted in an arid zone in central Ningxia. To investigate the effects of gravel-sand mulch and irrigation on soil temperature, soil water storage, jujube fruit yield, and water use efficiency, we used two types of mulch(gravel-sand mulching(M)and bare soil(N))and three different amounts of irrigation water(low water:180 mm(W1), medium water:210 mm(W2), and high water:240 mm(W3)). The results showed that gravel-sand mulching increased the soil temperature at a depth of 0~10 cm by 0.8~3.1 ℃ compared with that of bare soil. The soil warming period(10:00—14:00)after gravel-sand mulching was significantly shorter than that of bare soil(8:00—14:00), and the warming rate was 0.4 ℃·h-1 faster than that of the bare soil treatment. The method of mulching and the amount of irrigation water had a significant effect(P<0.05)on the amount of soil water stored at a depth of 0~80 cm during the entire fertility period of the jujube trees, and the gravel-sand mulching treatment increased by 10.97% on average with the amount of soil water stored compared with that of the bare soil treatment. The highest increase was 14.54% at the leaf bud stage, when the soil water content was low. The growth index, yield, and water use efficiency of jujube trees under gravel-sand mulch conditions were higher than those under bare soil, and the yield from high to low was W3>W2>W1, which increased by 5.99%, 10.54%, and 26.79%, respectively, compared with that of the bare soil treatment, with the highest water use efficiency of MW2 being 1.55 kg·m-3 . In condusion, the MW2 treatment is a suitable planting pattern for date palm forests on fallow and gravel-sand mulched field in the central arid zone of Ningxia. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF