羟基磷灰石-膨润土纳米复合材料对旱区玉米生长的影响

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中图分类号：S513 文献标志码：A 文章编号：1672-2043（2025）10-2538-12 doi：10.11654/jaes.2024-1118

Abstract：Tooptimize thephosphorusreleasecapacityof hydroxyapatite（HAP）.Enhancemaizegrowthbyincreasesoilavailable phosphoruscontent，improvethephosphorusabsorptionanddroughtresistane，thisstudymodifedHAPwithbentonite（BE）toprouce nano-fertliercompound（BE-HAP）.Usingaombinationofptexperimentsandsoilrocomthques，weexplordteanisms bywhichBE-HAPcompositesinfluenceplantphosphorusuptake，improvemaizegrowthunderdroughtconditions，promotesoilutrint transformation，and regulation soil microbial community structure.The results showed that the 1：1 BE-HAP composite significantly increased the available phosphorus content in sandy soil by 64.8% ， 42.3% ， 21.3% ，and 84.2% at 0 ，28，42 and56 days respectively. Furthermore，BE-HAP treatment significantly enhanced phosphorus content in maize plants by 35.1% and 35.7%，boosting growth and photosynthesis under drought stress，and improving maize dry weight of above and below ground by 93.7% and 186.0% . This treatment also reduced malondialdehyde levels by 45.0% ，increased the activity of antioxidant enzymes，and strengthened maize's resistance to oxidative stressIadition，therelativeabundancesofChitinophagaweresignificantlyreducedbyincreasingsoilphosphorusutrientswith

2025年10月

different proportions of BE-HAP treatment.Functional prediction using FAPROTAX revealed that the 5：1 and 10：1 BE-HAP composites stimulatedevealballeatedbodroggprosuchsrogtiodtrateitrfati acceleratingmicrobialnutrientcycling.Insummarydroxyapatitentoniteanocompositescansignificantlyanceterowth performanceofmaizeunderdroughttres.Thisisachievedthroughmultiplemechanisms，including increasingtheavailableposporus contentinthesoil，iigaigodativedmageinantsccuuatingdoughtistantsbstaesndpomotingtritosi driven by microbial activity.

Keywords：hydroxyapatite;bentonite;phosphate fertilizer;arid region; phosphorus absorption

磷是作物生长所需的第二大营养元素，其在植物生长发育过程中发挥着重要的调控作用[1-2。（剩余21137字）