辽西半干旱地区深松中耕对土壤养分及玉米产量的影响

在辽宁西部阜新旱作农业示范区进行田间试验,探讨了深松中耕对这一地区土壤养分及玉米产量的影响.结果表明:与传统耕作相比,深松中耕能够提高0～30 cm土层土壤有机质含量及0～20 cm土层土壤全N、P、K含量,以提高0～10 c m土层土壤全N含量最为显著(P＜5%);能够增加0～20 cm土层土壤碱解氮含量及0～30 cm土层土壤有效钾含量,以增加0～10 cm土层土壤有效钾含量最为显著(P＜5%);显著增加10～30 cm土层土壤有效磷含量(P＜5%);增加了玉米产量,增加幅度为7.80% .

Effect of deep loosening cultivation on soil nutrients and corn yield in semiarid region of Western Liaoning Province

This paper discussed the effect of inter-tillage on soil nutrients and corn yield by field experiment in dry-farming agricultura l demonstration area of Fuxin in Liaoning Province. The results showed that, com pared with traditional cultivation, deep loosening cultivation increased the con tent of soil organic in 0～30 cm soil layer and the content of total N, P and K in 0～20 cm soil layer, and it improved significantly the content of soil total N (P＜5%). It increased the content of alkaline hydrolytic nitrogen in 0～20 cm soil layer and the content of available potassium in 0～30 cm soil layer, an d increased significantly the amount of available potassium in 0～10 cm soil lay er P＜5%). Deep loosening cultivation also increased significantly the cont ent of available phosphorus in 10～30 cm layer(P＜5%). Thus it increased t he corn yield in this area, and the range of increase was 7.80%.