CAJ | 학술논문

通过对山东省寿光市不同利用方式下土壤相关性质的比较,探讨了农田土壤有机质和氮磷钾含量状况,并分析了设施菜地种植年限与有机质、全量氮磷含量的相互关系.研究结果表明:山东寿光农田土壤有机质和全量氮磷含量与第二次土壤普查时比较均有较大幅度增加,其中以设施菜地增加幅度最大,分别达120%、160%和364%,但全钾含量的增加幅度很小、仅为17.5%;不同利用方式比较,设施菜地土壤有机质、全氮、全磷含量均明显高于露天菜地、小麦/玉米地及棉花地,而全钾含量则低于小麦/玉米地和棉花地;从养分含量的分级结果看,设施菜地有机质、全量氮磷钾含量主要分布于>20g · kg-1、>1.2g · kg-1、>1.0 g · kg-1、20～25g · kg-1的级别中;设施菜地种植年限与土壤有机质、全量氮磷含量变化间有显著相关性,且均可用Y=a+bX+cX2的形式来表示,即随种植年限增加,有机质与氮磷含量首先呈逐步增加的趋势,并分别在第9.6年、8.9年和11.4年时达到最高值,之后则有随种植年限延长而下降的趋势.
통과대산동성수광시불동이용방식하토양상관성질적비교,탐토료농전토양유궤질화담린갑함량상황,병분석료설시채지충식년한여유궤질、전량담린함량적상호관계.연구결과표명:산동수광농전토양유궤질화전량담린함량여제이차토양보사시비교균유교대폭도증가,기중이설시채지증가폭도최대,분별체120%、160%화364%,단전갑함량적증가폭도흔소、부위17.5%;불동이용방식비교,설시채지토양유궤질、전담、전린함량균명현고우로천채지、소맥/옥미지급면화지,이전갑함량칙저우소맥/옥미지화면화지;종양분함량적분급결과간,설시채지유궤질、전량담린갑함량주요분포우>20g · kg-1、>1.2g · kg-1、>1.0 g · kg-1、20～25g · kg-1적급별중;설시채지충식년한여토양유궤질、전량담린함량변화간유현저상관성,차균가용Y=a+bX+cX2적형식래표시,즉수충식년한증가,유궤질여담린함량수선정축보증가적추세,병분별재제9.6년、8.9년화11.4년시체도최고치,지후칙유수충식년한연장이하강적추세.
The contents of organic matter, nitrogen, phosphorus, potassium in different agricultural soils were analyzed to study the status and changes of these nutrients. The relationship between nutrient contents and cultivated years was also studied. The results indicated that compared with the results from the Second National Soil Survey, the contents of organic matter, total nitrogen and phosphorus were largely increased, which even increased by 120%, 160% and 364%, respectively, in greenhouse soils;while the potassium content was only increased by 17.5%. In comparison with those among different-used soils, the content of Organic Matter, Nitrogen, Phosphorus in greenhouse soil was higher than that in other used soils, while the content of potassium in greenhouse soil was lower than that in the soil of wheat/corn field and cotton field. The contents of Organic Matter, Nitrogen, Phosphorus, Potassium were respectively in the levels of > 20g · kg-1,> 1.2g · kg-1,> 1.0 g · kg-1,20-25 g · kg-1 in greenhouse soil. The studies on the relationship between cultivating years and the contents of nutrients indicated that with the increasing of cultivating years, the contents of Organic Matter, Nitrogen, Phosphorus in greenhouse soil were increased, and the greatest levels of them appeared after 9.6, 8.9, and 11.4 years of cultivation, respectively. Thereafter the contents of nutrients were found to decrease. The decrease of greenhouse soil quality has been a very prevalent problem after a long farming time.