论文部分内容阅读
肥沃的土壤应具有良好的保肥性,同时也应具有良好的供肥性。在土壤养分的调节中,一方面要促进养分释放,以便及时地供应植物需要,另一方面还要有利于养分保存和积累,以便长期发挥作用。1 增施有机肥料,调节土壤胶体状况 通过在土壤上施用粪尿肥、堆肥、绿肥和秸秆还田等有机肥料,不仅对提高土壤的保肥力具有重要作用,而且还能提供一定数量的有效养分,提高土壤持续供应养分的能力,改善土壤的供肥性能。对于保肥能力差的砂质土壤,还可实行翻淤压砂、放淤压砂或掺粘改砂,来增加砂质土壤中胶体物质的含量,提高土壤的保肥性。
Fertile soil should have good fertility, but also should have a good for fertilizer. In the regulation of soil nutrients, on the one hand to promote the release of nutrients in order to timely supply of plant needs, but also conducive to the preservation and accumulation of nutrients in order to play a long-term role. 1 Adding Organic Fertilizers to Regulate Soil Colloids The application of organic fertilizers such as manure, compost, green manure and straw to soil not only plays an important role in improving soil fertility but also provides a certain amount of effective nutrients , Improve the ability of the soil to continuously supply nutrients and improve soil fertility. For poor sandy soil fertility, but also the implementation of transposed silt, silt sand or gravel mixing or sand to increase the content of sandy soil colloidal substances, improve soil fertility.