作物研究2011，Vol.25Issue(3)：215-217,222,4.DOI:10.3969/j.issn.1001-5280.2011.03.09
稻草还田在双季稻生产中的应用效果研究
Effects of Rice Straw Backed to Soil in Double Rice Cropping Production
曾文伟 1石小江 1张礼红 2石跃才3
作者信息
- 1. 邵阳市农业科学研究所,湖南邵阳,422000
- 2. 湖南省瓜类研究所,邵阳,422001
- 3. 邵阳市农业局,湖南邵阳,422000
- 折叠
摘要
Abstract
Rice straw recycled back to the soil was done in three consecutive years. The results showed that the effects of this way would increase the soil fertility as the organic matter was increased by 0.9 g/kg,total nitrogen increased by 0.25 g/kg,rapidly available NPK increased by 9 mg/kg, 2.8 mg/kg and 39 mg/kg respectively; It also showed that the physics properties of the soil was improved significantly through reducing the soil bulk density by 0.12 g/cm3· total porosity and ventilation porosity increased by 4％ and 6.8 ％ respectively. Moreover,the most important one was that the benefits of the ratio of the output to input of rice was largely improved. Although under the conventional fertilizering the effective panicle per unit area was dropped, the rice straw recycled back to the soil would strengthen the soil potential fertility and sustainability of nutrient supply, benfiting the rice growth in late stage and increasing filled grain number per panicle and the 1 000 grain weight significantly,leading to outyielded by 438 kg/hm2,reduced the production cost by 1 461.7 yuan/hm2,and the actual income was higher by 2 293. 9 yuan/hm2, the ratio of output to input was higher by 6.08 compared to the check.关键词
水稻/稻草还田/施肥/产投效益Key words
Rice/ Rice straw backed to the soil/ Fertilization/ Benefit of output to input in rice production分类
农业科技引用本文复制引用
曾文伟,石小江,张礼红,石跃才..稻草还田在双季稻生产中的应用效果研究[J].作物研究,2011,25(3):215-217,222,4.
