不同种植方式对土壤水分和无机氮的影响

The Influence of Different Planting Patterns on Soil Moisture and Inorganic Nitrogen

通过田间试验,研究了不同种植方式对旱地冬小麦土壤含水量和无机氮的影响,结果表明:覆膜作用不仅能影响冬小麦土壤水分,而且对硝态氮和铵态氮的分布也有一定的影响.在返青期,全膜穴播处理0cm^20cm和20cm^40cm土壤含水量较农户处理分别提高28%和11.1%,比相同施肥量的测控施肥处理分别提高12.9%和9.2%;土壤硝态氮含量垄膜沟播处理和全膜穴播处理均比测控施肥分别高出8.7%和27.2%,铵态氮的变化趋势与土壤水分变化趋势一致.说明垄膜沟播和全膜穴播种植方式均利于土壤水分的保蓄和氮素的有效利用,适宜在生产实践中推广应用.

The effect of different planting patterns on soil moisture content and inorganic nitrogen on dry land winter wheat is studied in the field experiment. The results show that the plastic film not only can influence the soil moisture on winter wheat, but also has a certain impact on the distribution of nitrate nitrogen and ammonium nitrogen. In returning green stage, using the entire film dibbling 0cm - 20 cm and 20 cm - 40 cm, the soil moisture content respectively increase 28% and 11.1% than that of farmers processing, and increase 12.9% and 9.2% than that of the measurement and control of the same fertilizer treatments. The nitrate nitrogen content in soil of ridge furrow sowing membrane treatment and the whole film dibbling treatment comparing with the control fertilizer were higher 8.7% and 27.2% , respectively. The change trend of ammonium nitrogen and soil moisture content change trend is consistent. In a word, ridge film furrow sowing and full film dibbling cropping pattern would benefit the soil moisture storage and effective use of nitrogen, and are suitable for popularization and application in production practices.