| 引用本文: | 叶 浩,黄必善,熊 威,等.蓄雨灌溉对农田养分和水稻生长的影响[J].灌溉排水学报,2022,41(S2):22-26. |
| YE Hao,HUANG Bishan,XIONG Wei,et al.蓄雨灌溉对农田养分和水稻生长的影响[J].灌溉排水学报,2022,41(S2):22-26. |
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| 摘要: |
| 【目的】探寻蓄雨灌溉对农田养分及作物的影响。【方法】以水稻浅水勤灌为对照，并基于浅水勤灌设置3种蓄雨上限（TR1, 100 mm; TR2, 80 mm；TR3, 60 mm），研究蓄雨灌溉对农田养分和水稻生长的影响。【结果】①4个处理0~20 cm（表层）、20~40 cm（深层）土层土壤养分碱解氮、速效磷、速效钾无显著差异；②TR1—TR3处理表层碱解氮平均比深层高20.0%，表层速效磷比深层高85.0%，表层速效钾比深层高66.8%。随生育期变化，蓄雨灌溉处理表层土壤的碱解氮逐渐下降，深层逐渐上升；表层和深层土壤速效磷逐渐上升；表层和深层速效钾逐渐下降；③4个处理的有效分蘖、穗长、结实率、千粒质量无显著差异。【结论】蓄雨灌溉可以提高表层碱解氮量、速效磷量和速效钾量，其中蓄雨80 mm综合效益最佳。 |
| 关键词: 水稻；农艺指标；蓄雨灌溉；土壤养分 |
| DOI：10.13522/j.cnki.ggps.2022317 |
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| Impacts of Rainwater Storage Irrigation on Farmland Nutrients and Rice Growt |
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YE Hao, HUANG Bishan, XIONG Wei, WANG Shubin
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1. Tianmen Experiment Station of Farmland Irrigation and Drainage, Tianmen 431700, China;
2. Tianmen Bureau of Water Resources and Lakes, Tianmen 431700, China
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| Abstract: |
| 【Objective】To provide scientific basis for rain storage irragaition, the trail explored the effect of rain storage irrigation on farmland nutrients and crops.【Method】Under natural conditions, shallow water frequent irrigation was the control, based on shallow water frequent irrigation, three kinds of rain storage upper limits (TR1, 100 mm; TR2, 80 mm; TR3, 60 mm) were designed to study impacts of rainwater storage irrigation on farmland nutrients and rice growth. 【Result】①Rain storage irragation has no effect on available nitrogen, available phosphorus, available potassium at the level of 5% in soil nutrients of 0~20 cm (surface soil) and 20~40 cm (deep soil); ②The available nitrogen of surface soil of TR1—TR3 was 20.0% higher on average than that of the deep soil; the available phosphorus of surface soil was 85.0% higher than that of the deep soil; the available potassium of surface soil was 66.8% higher than that of the deep soil. With the change of growth period, the available nitrogen of surface soil of the rain storage irrigation treatment decreased gradually, and the deep soil increased gradually. Available phosphorus of surface soil and deep soil gradually increased; available potassium of surface soil and deep soil decreased gradually; ③There was no significant difference in effective tillering, panicle length, seed setting rate and 1 000-grain weight among the four treatments at the 5% level. 【Conclusion】Rain storage irrigation can increase surface available nitrogen, available phosphorus and available potassium, and 80 mm rain storage has the best comprehensive benefit. |
| Key words: rice; agronomic indicators; rain storage irrigation; soil nutrient |
