浅耕层耕地改良利用效果探讨

Discussion on the improvement and utilization effect of shallow tillage layer of cultivated land

进行加深耕层3cm和6cm、施用绿肥、施用农家肥、配方施肥的试验,为改良利用浅耕层稻田提供理论依据。田间试验表明,配方施肥、施用绿肥、施用农家肥、精耕细作在增加水稻产量的同时,也促进了土壤熟化、不同程度地增加了浅耕层稻田的耕作层厚度;深耕3cm和6cm对土壤PH值、有机质、全氮的影响不大,但土壤速效磷稍有下降,而速效钾略为增加;深耕3cm和6cm对水稻产量有较大影响,在第一到第四年里,水稻产量逐年增加,且深耕幅度大最终增产幅度也大。建议逐年加深耕作层,增加施肥量。

An experiment of deepening tillage layers for 3 cm and 6 cm, applying green manure and soil-tested ＆ fertilization was conducted to provide theoretical basis for the the improvement and utilization of shallow tillage layer paddy field. The field experiment shows that the above measures in the experiment can increase the rice yield, meanwhile, promote soil-ripening and increase the thickness of tillage layer. For 3 cm and 6 cm deep tillage, there is no obvious impact on soil Ph, organic matter and total nitrogen, but slightly decrease on rapid available phosphorus and slightly increase in rapid available potassium. Deep tillage has great impact on rice yield, from first year to fourth year, the rice yield will be increased yearly and deeper tillage will bring more increase rate in yield. It is suggested that the tillage layer will be deepened year by year, meanwhile, to increase the fertilization amount.