摘要
在实验室条件下制备了海藻酸磷肥、腐植酸磷肥和氨基酸磷肥3种增值磷肥，利用室内土壤培养试验研究增值磷肥对潮土无机磷组分及其变化的影响。结果表明， 1）培养180 d后，普通磷肥（磷酸一铵,下同）和增值磷肥均显著提高了土壤速效磷含量，并降低了土壤pH； 施用增值磷肥提高土壤速效磷的幅度为34.6～41.92 mg/kg，高于普通磷肥； 施用增值磷肥降低土壤pH的幅度为0.23～0.36个单位,高于普通磷肥。2） 与普通磷肥相比，增值磷肥明显降低土壤对磷的固定，腐植酸、海藻酸和谷氨酸增值磷肥处理的固定率分别比普通磷肥降低7.32%、7.13%和11.99%。3）培养180 d后，与普通磷肥处理相比，增值磷肥均提高土壤Ca2-P、 Ca8-P 和 Al-P含量，减缓Al-P 向 Fe-P 的转化。
In this study, the value-added phosphate fertilizers were made by combining humic acid, alginic acid and glantamic acid with mono-ammonium phosphate （MAP）, and the composition and transformation of inorganic phosphorus in calcareous soil were studied under laboratory incubation condition. The results show that the soil available phosphorus contents are significantly increased and soil pH is significantly decreased after 180 days’ incubation with the application of phosphate fertilizers, whether they are MAP or the value-added phosphate fertilizers. The soil available phosphorus contents are increased by 34.6 mg/kg to 41.92 mg/kg and soil pH decreased by 0.23 to 0.36 with the application of the value-added phosphate fertilizers. The value-added phosphate fertilizers decrease the P fixation obviously. Compared to the MAP treatment, the P fixation percentages of humic acid phosphate fertilizer, alginic acid phosphate fertilizers and glantamic acid fertilizers are decreased by 7.32%, 7.13% and 11.99%, respectively, and the value-added phosphate fertilizers increase the contents of Ca2-P, Ca8-P and Al-P and retard the transformation from Al-P to Fe-P.
出处
《植物营养与肥料学报》
CAS
CSCD
北大核心
2013年第5期1183-1191,共9页
Journal of Plant Nutrition and Fertilizers
基金
现代农业产业技本体系建设专项经费(CARS-3-2-18)
"十二五"国家科技支撑计划课题(2011BAD11B05)
中央级公益性科研院所基本科研业务费专项资金(2013-5)资助
关键词
增值磷肥
潮土
土壤培养
无机磷组分
value-added phosphate fertilizer
fluvo-aquic soil
incubation
soil inorganic phosphorus fraction
作者简介
李志坚（1987—），男，江西南昌人，硕士研究生，主要从事增值肥料与肥料增效剂研究。E-mail：lizhijian200@126.com
通讯作者： E—mail：zhianlin@163．com
