| Cite this article: | 张泽锦,王力明,唐丽,等.滴灌水量对设施土壤养分分布和黄瓜果实养分吸收的影响[J].灌溉排水学报,0,():-. |
| zhangzejin,wangliming,tangli,et al.滴灌水量对设施土壤养分分布和黄瓜果实养分吸收的影响[J].灌溉排水学报,0,():-. |
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| Effect of drip irrigation amount on soil nutrient distribution of greenhouse and the nutrient absorption of cucumber |
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zhangzejin1, wangliming1, tangli1, liyuejian2
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1.Horticulture Research Institute, Sichuan Academy of Agricultural Sciences;2.Sichuan Academy of Agricultural Sciences
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| Abstract: |
| 【Background】Optimal irrigation amount not only satisfy the needs of high yield of vegetables but can also reduce the loss of soil nutrients. Facility soil is more likely to cause soil nutrient accumulation than field soil due to the lack of leaching by natural rainfall. However, there are few reports on the impact of drip irrigation amount on facility soil nutrient distribution and cucumber nutrient absorption.【Objective】The objective of this study was to investigate effect of different irrigation amount on soil nutrient distribution of greenhouse and the absorption of nutrients of cucumber in Sichuan. 【Method】The cucumber variety "No. Chuancui 13" was used as the experiment material. Added to these were five irrigation levels by keeping the soil moisture at 25%～30% (T1), 35%～40% (T2), 45%～50% (T3), 55%～60% (T4), 65%～70% (T5) of the volumetric water content respectively. The experiment of drip irrigation under the film in the facility was conducted. 【Result】With the increase of irrigation amount, the soil nitrate nitrogen, available phosphorus and available potassium of the cultivated layer have a downward trend. With the increase of irrigation amount, the yield of cucumber increases gradually, and the yield of T5 treatment was highest. The yield of T5 treatment increased by 55.60% compared with T1 treatment. The cucumber fruits of T4 treatment had the highest nutrient accumulation and absorption rate. Compared with T1 treatment, the accumulation of N, P2O5 and K2O in T4 treatment increased by 58.23%, 46.53% and 48.25%, respectively. And the absorption rates in T4 treatment were 30.95%, 7.74% and 57.62%, respectively. 【Conclusion】the optimal irrigation amount is 3 288.60 m3?/hm-2 of the volumetric water content, under the premise of a certain target yield of cucumber, appropriately increase the amount of irrigation water, increase the nutrient absorption rate, and achieve the purpose of promoting fertilizer with water and reducing fertilizer application. |
| Key words: drip irrigation amount; soil nutrient; cucumber; yield; nutrient absorption rate |
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