论文部分内容阅读
以自制的玻璃基质缓释肥料为供试材料,采用土壤淋溶方法,研究玻璃缓释肥料在土壤中的养分释放规律。结果表明:培养28d后玻璃肥料的氮、钾累积释放率分别为普通肥料的81.34%和75.32%(P<0.01),极大的减少了养分淋溶损失。玻璃肥料在淋溶的中后期仍有一定的氮、钾释放速率和释放量,减少了养分损失率,有效地延长了氮、钾养分供应期,具有明显的缓释效果。
The self-made glass substrate slow-release fertilizer was used as test material, and soil leaching method was used to study the regularity of nutrient release of slow-release fertilizer in soil. The results showed that the cumulative release rates of nitrogen and potassium of glass fertilizers were 81.34% and 75.32% (P <0.01), respectively, of common fertilizers after 28 days of cultivation, which greatly reduced nutrient leaching loss. In the middle and late stages of leaching, the glass fertilizer still has some nitrogen and potassium release rate and release amount, reducing the nutrient loss rate, effectively extending the supply period of nitrogen and potassium nutrients, and has obvious slow-release effect.