| Cite this article: | 纪立东,李磊,司海丽,等.不同用量PAM对砾石土水肥保蓄及酿酒葡萄产量品质的影响[J].灌溉排水学报,0,():-. |
| Ji Li-dong,Li Lei,Si Hai-li,et al.不同用量PAM对砾石土水肥保蓄及酿酒葡萄产量品质的影响[J].灌溉排水学报,0,():-. |
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| DOI： |
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| Effects of different amounts of PAM on water and fertilizer retention of gravel soil and yield quality of wine grape |
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Ji Li-dong,Li Lei,Si Hai-li,et al
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Institute of Agricultural Resources and Environment,Ningxia Academy of Agriculture and Forestry Sciences,Yinchuan Ningxia
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| Abstract: |
| 【Objective】This paper discusses the effects of PAM on gravel soil improvement and water、nutrition retention by applying different amounts of PAM on the basis of organic fertilizer, and provides theoretical and technical support for the application of PAM in soil improvement and yield improvement of wine vineyard.【Method】The water stability aggregates, water content, soil chemical properties, wine grape yield and quality of gravel soil were compared and analyzed under 6 fertilization modes including conventional fertilization, single application of organic fertilizer 6000kg?hm-2, organic fertilizer 6000kg?hm-2+PAM 300 kg?hm-2, organic fertilizer 6000kg?hm-2+PAM600kg?hm-2, organic fertilizer 6000kg?hm-2+PAM 900kg?hm-2, organic fertilizer 6000kg?hm-2+PAM 1200 kg?hm-2.【Result】Application of PAM with organic fertilizer can significantly increase the content of >2 mm water-stable aggregates in gravel soil, significantly reduce the content of < 0.25mm water-stable aggregates, and significantly increase the soil water content in soil at the depth of 20cm ~ 60cm. PAM900 kg?hm-2 is the most obvious combination effect in different treatments. When the application amount of PAM exceeded 600kg?hm-2, the grape yield was significantly increased by significantly promoting grape ear length, and the yield increased by 44.08% compared with that of conventional fertilization. The simulation showed that the optimal application amount of PAM in the highest theoretical yield was 1161.23kg ?hm-2. When the dosage of PAM was 900 kg?hm-2, it could significantly increase the content of soluble solids, reducing sugar and total phenols in grapes, enhance the soil organic matter, and preserve the soil nitrogen and potassium nutrients. 【Conclusion】The optimal application dosage of PAM and organic fertilizer in wine vineyard of gravel soil at the eastern foot of He lan mountain is 900 kg?hm-2. |
| Key words: wine grapes;gravel soil;PAM;water-stable aggregates;water storage;production |
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