山地有机梨使用有机肥培肥保水增效技术研究

针对山地水土流失、土壤瘠薄及有机梨对原生态的高标准生产要求，研究出有机肥和碎秸秆混合压埋改良土壤培肥保水技术。研究结果表明，改造后的土壤腐殖质化程度高，营养成分含量高，铵态氮（N）含量105．08mg／kg，速效磷（PzOs）含量41．88mg／kg，速效钾（KzO）含量426．17mg／kg，可溶性有机质含量为2．21％。修反坡梯田、修水盆和有机肥秸秆压埋改造后的土壤，显著提高了土壤含水量，提高7.1％。果园树盘覆草，显著减少了地面蒸发量，覆草比不覆草日减少地面蒸发量3．61mm。

Technological research on the organic nutrient supplement,water retention and synergistic effect of mountain land with organic fertilizer and broken straw for organic pear production

In view of the soil and water loss and soil barren of the mountain land as well as higher-standard production requirements of organic pear for proto-ecology, a new technology for the improvement of soil fertility and soil water in the organic pear production was pro posed by applying the mixture of organic fertilizer and broken straw to the mountain soil. The results showed a high soil humification degree of the modified soil, with high nutrient contents of, 105.08 mg/kg ammonium nitrogen （N）, 41. 88 mg/kg available P （P2O5）, 426.17 mg/kg rapidly-available K （K2O）, and 2.21% soluble organic matters. Through the construction of reversed terrace and water pits, and the pressing-burying technoloical appli- cation, the modified soil significantly increased the soil moisture content by 7.1 %. Addition- ally, by grass coverage around pear trees, the ground evaporation capacity was significantly reduced by 3.61 mm, compared with the uncovered ground.