Soil aggregate stability and C stock are key factors in greenhouse vegetable production, which are influenced by the application of different organic materials. However, the responses of soil aggregate stability and C stock to organic amendment in greenhouse vegetable fields are not well understood. A 5-year study was carried out in greenhouse vegetable fields to investigate the effect of partial substitution of rice husks for manure on soil aggregate stability, C compositions, and their relationships. Four treatments included: (a) no organic fertilization (control), (b) 30 t ha⁻¹ chicken manure (CM), (c) 30 t ha⁻¹ rice husks (RH), and (d) 10 t ha⁻¹ chicken manure plus 20 t ha⁻¹ rice husks (MR). Rice husks addition significantly increased the proportion of >2 mm aggregates and mean weight diameter (MWD), while manure addition showed no difference with control. Polysaccharide and humin (HM) were increased with rice husks addition (RH and MR) compared with that in CM treatment. Polysaccharide and HM caused 86.03% variation of soil aggregate, in which polysaccharide and HM contributed 76.3 and 9.7%, respectively. The soil C stock in CM, RH, and MR treatments was increased by 146, 175, and 164% compared with control, respectively. Aliphatic-C and amorphous Fe-oxides (Fe-ox) content were as higher in MR added soil than those in RH treatment. Partial substitution of rice husk for manure improved soil aggregation stability and thus enhanced C stock by suppling more polysaccharide, HM and liberated soil minerals, which was conducive to the sustainable development in greenhouse vegetable production.

中文翻译：

---

温室菜地中稻壳部分替代肥料：从土壤碳储量和团聚体稳定性的洞察

土壤团聚体稳定性和碳储量是温室蔬菜生产的关键因素，受不同有机材料施用的影响。然而，土壤团聚体稳定性和碳储量对温室蔬菜田有机改良剂的响应尚不清楚。在温室蔬菜田中进行了一项为期 5 年的研究，以研究部分稻壳替代肥料对土壤团聚体稳定性、碳组成及其关系的影响。四种处理包括：（a）不施有机肥（对照），（b）30 t ha ^-1鸡粪（CM），（c）30 t ha ^-1稻壳（RH），和（d）10 t ha ^{- 1}鸡粪加 20 t ha ^-1稻壳（MR）。添加稻壳显着增加了> 2 mm 聚集体的比例和平均重量直径（MWD），而添加粪肥与对照没有差异。与CM处理相比，添加稻壳（RH和MR）增加了多糖和腐殖质（HM）。多糖和HM导致土壤团聚体变异86.03%，其中多糖和HM分别贡献76.3%和9.7%。与对照相比，CM、RH 和 MR 处理的土壤碳储量分别增加了 146%、175% 和 164%。MR 添加土壤中的脂肪族 C 和无定形铁氧化物 (Fe-ox) 含量与 RH 处理中的含量相同。用稻壳部分替代肥料提高了土壤团聚稳定性，从而通过提供更多的多糖、HM 和释放的土壤矿物质来提高碳储量，