论文部分内容阅读
研究了稻草覆盖对丘陵红壤旱地作物产量提升及土壤改良的效果,以期为南方丘陵红壤旱地土壤培肥、改良及稻草资源合理利用提供指导。通过设置不覆盖稻草、稻草覆盖和稻草覆盖+腐秆菌3个处理,分析了不同稻草覆盖对作物产量、土壤水分、土壤生物活性及土壤速效养分等指标的影响。结果表明:稻草覆盖能显著提高花生、木薯产量,而添加腐秆菌对花生、木薯产量增产效果不明显;稻草覆盖可明显促进土壤速效养分的积累,其中以速效钾提高最大,并显著提高土壤生物活性;稻草覆盖能明显提高土壤含水量,但主要影响0~20 cm土层土壤含水量。本试验条件下,稻草覆盖能显著提高作物产量,若增施腐秆菌可加速稻草秸秆的腐解,促进土壤速效养分的积累。
The effect of straw mulching on crop yield and soil improvement in hilly red soil region was studied in order to provide guidance for soil fertility improvement and straw resource utilization in upland hilly red soil. The effects of different straw mulching on the indexes of crop yield, soil moisture, soil bioactivity and soil available nutrients were analyzed by setting three treatments, straw, straw and straw. The results showed that straw mulching could significantly increase the yield of peanut and cassava, while the addition of straw could not increase yield of peanut and cassava obviously. Straw mulching could obviously promote the accumulation of soil available nutrients, and the content of available potassium was the highest, Biological activity; straw coverage can significantly improve soil water content, but mainly affect soil moisture content in 0 ~ 20 cm soil layer. Under the experimental conditions, straw coverage can significantly increase crop yield, if the addition of rot fungi can accelerate the decomposition of straw straw, and promote the accumulation of soil available nutrients.