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通过在油桐幼林中开展套种玉米、红薯和黄豆试验,并以纯油桐幼林为对照,研究油桐+玉米、油桐+红薯和油桐+黄豆套种模式对土壤的容重、比重、孔隙度等物理性质和全氮、全磷、全钾、水解氮、有效磷、速效钾、有机质和p H值等化学性质的影响。结果表明,油桐+玉米、油桐+红薯和油桐+黄豆套种模式均能改善土壤物理性质,也能显著提高油桐幼林土壤中全氮、全磷、全钾、水解性氮、有效磷、速效钾和有机质含量,分别比对照提高27.03%、40.50%、51.97%、57.03%、149.72%、109.34%和41.67%,油桐+红薯和油桐+黄豆模式对土壤理化性质影响优于油桐+玉米模式。
The effects of tung tree + maize, tung tree + sweet potato and tung tree + soybean on soil bulk density, specific gravity, porosity and so on were studied through intercropping maize, sweet potato and soybean in young plantation of tung tree and the young pure tung tree as control Physical properties and total nitrogen, total phosphorus, total potassium, hydrolyzed nitrogen, available phosphorus, available potassium, organic matter and p H values and other chemical properties. The results showed that tung tree + maize, tung tree + sweet potato and tung tree + tung bean intercropping could improve the soil physical properties and significantly increase the contents of total nitrogen, total phosphorus, total potassium, hydrolyzable nitrogen, available phosphorus , Available potassium and organic matter content increased by 27.03%, 40.50%, 51.97%, 57.03%, 149.72%, 109.34% and 41.67%, respectively. The effects of Tung + sweet potato and Tung + Tong + corn pattern.