| 引用本文: | 严程明,安东升,马海洋,等.季节性干旱区滴灌覆膜对菠萝园降雨入渗的影响[J].灌溉排水学报,0,():-. |
| yan cheng ming,AN Dongsheng,MA Haiyang,et al.季节性干旱区滴灌覆膜对菠萝园降雨入渗的影响[J].灌溉排水学报,0,():-. |
|
| 摘要: |
| 【目的】为探明季节性干旱区滴灌覆膜对菠萝园降雨入渗的影响及规律，评估滴灌菠萝园进行地膜覆盖的节水效应。【方法】在大田设置常规栽培处理（CK）、滴灌处理（DF）和滴灌覆膜处理（MF），利用FDR水分监测仪原位监测菠萝种植垄0~100 cm土层的土壤含水率变化过程，研究不同处理对菠萝种植垄降雨入渗量和入渗水分再分配的影响。【结果】结果表明：（1）采用滴灌和滴灌覆膜进行补充灌溉均会限制降雨入渗，干湿周期内，菠萝种植垄0~100 cm土层总降雨入渗量分别较常规雨养栽培降低48.4%和60.8%，但不会影响滴灌覆膜的节水效应，与CK和DF处理相比，MF处理水分农艺生产力分别提高37.5%和13.8%，田间生物量提高13.8%和52.2%。（2）滴灌覆膜会明显提高降雨的深层（40~100 cm）入渗比例，各处理不同降雨量级下深层入渗比例分别为CK（中雨：3.5%；大雨：15.8%；暴雨：30.3%）、DF（中雨：2.5 %；大雨：16.7 %；暴雨：31.5 %）、 MF（中雨：15.7 %；大雨：39.7 %；暴雨：43.0 %）；（3）不同降雨量级对土壤水分的影响（增幅>4 %）深度为CK（中雨：30 cm；大雨：90cm；暴雨：30 cm）、DF（中雨：20 cm；大雨：30 cm；暴雨：20 cm）、 MF（中雨：10 cm；大雨：50 cm；暴雨：20 cm），其中以大雨时的影响深度和幅度最大。（4）滴灌覆膜条件下菠萝园种植垄土壤水分含量更平稳，雨季CK、DF和MF处理土壤含水率随时间的变化波动较大的土层分别是0~30 cm、0~20 cm和0~10 cm。【结论】研究为全面评估滴灌覆膜在季节性干旱区旱地经济作物的节水效应具有重要意义。 |
| 关键词: 滴灌覆膜;降雨入渗;季节性干旱;菠萝 |
| DOI： |
| 分类号:S157 |
| 基金项目: |
|
| Effects of drip irrigation under film mulching on rainfall infiltration of pineapple plantation in the seasonal arid area |
|
yan cheng ming1, AN Dongsheng1, MA Haiyang2, XU Lei1, XU Zhijun1, DOU Meian1
|
|
1.Zhanjing experimental station, CATAS;2.South subtropical crops research institute, CATAS
|
| Abstract: |
| 【Background】Mulching drip irrigation technology is one of the most important measures for dry farming, which can achieve precision irrigation and water-saving. However, the impermeability of plastic film can also change rainfall infiltration, increase rainfall runoff, limit rainfall infiltration, and reduce the utilization rate of natural rainfall, especially in the seasonal arid area, where rainfall is abundant, compared with the arid or semi-arid areas, The influence of film mulching on rainfall utilization may be more prominent, but there is no report on the influence of film mulching on rainfall infiltration in seasonal arid areas. It is of great significance to explore the influence of film mulching on rainfall infiltration for comprehensive evaluation of water saving effect of film mulching drip irrigation in seasonal arid areas and rational utilization of rainfall resources. 【Objective】In order to explored the influences and rules of drip irrigation under film mulching on rainfall infiltration of pineapple plantation in seasonal arid area，evaluate the water saving effect of plastic film mulching on Pineapple orchard under drip irrigation. 【Method】field trials of three treatments including conventional cultivation (CK), drip irrigation (DF) and drip irrigation under film mulching (MF) were carried out , In situ monitoring the changes of soil moisture content in 0-100cm soil layer of pineapple planting row by using the FDR moisture monitoring instrument. The effects of different treatments on rainfall infiltration and water redistribution of pineapple planting ridges were studied. 【Result】The results showed that :(1) Both drip irrigation and drip irrigation under film mulching for supplementary irrigation could limit the rainfall infiltration of pineapple planting rows, the total rainfall infiltration in 0-100 cm soil layer of pineapple planting ridge was 48.4% and 60.8% lower than that of conventional rain fed cultivation. but MF did not affect the water use efficiency and yield. Compared with CK and DF, the water agronomic productivity of MF was increased by 37.5% and 13.8%, and the field biomass was increased by 13.8% and 52.2%.(2) Drip irrigation under film mulching and drip irrigation can increase the rainfall infiltration ratio of deep soil (40-100 cm), the rainfall infiltration ratio of deep soil (40-100 cm) was CK (moderate rainfall: 3.5%; Heavy rain: 15.8%; Rainstorm: 30.3%), DF (moderate rain: 2.5%; Heavy rain: 16.7%; Rainstorm: 31.5%), MF (moderate rain: 15.7%; Heavy rain: 39.7%; Rainstorm: 43.0%); (3) The main influence depth of different rainfall levels on soil moisture (increasing range >4%) was CK (moderate rainfall: 30 cm; Heavy rain: 100 cm; Rainstorm: 30 cm), DF (moderate rain: 20 cm; Heavy rain: 30 cm; Rainstorm: 20 cm), MF (moderate rain: 10 cm; Heavy rain: 50 cm; Rainstorm: 20 cm), Among them, the influence depth and amplitude of heavy rain on soil moisture was the largest; (4) Under the condition of drip irrigation under film mulching, the soil moisture content of pineapple planting rows was more stable. In rainy season, the depth of soil moisture content fluctuated greatly of CK, DF and MF which were 0-30 cm, 0-20 cm and 0-10 cm. 【Conclusion】This study will provide important references for comprehensively evaluating the water-saving effect of drip irrigation under film mulching on cash crops in seasonal arid areas. |
| Key words: Drip irrigation with plastic film mulching; rainfall infiltration; Seasonal drought; Pineapple |
