CAJ | 학술논문

应用化学分析、吸附试验和生物诊断方法，系统研究了风沙土磷的有效性和利用率。结果表明，土壤磷素活性高低的顺序为：紧沙土>轻沙土>沙土，无机磷盐是风沙区植物所能利用的土壤磷素的主要磷形态，且Ca－P所占的比例最大。磷固定强弱的顺序为：紧沙土>轻沙土>沙土，对各处理土壤进行无机磷形态分级测定表明，磷肥施入土壤以后，在相当长的时间里主要是向Ca2－P、Ca8－P转化，Al－P和Fe－P也有不同程度的积累。提高土壤有效磷含量主要靠增加化学磷肥用量和有机无机肥配合施用。
응용화학분석、흡부시험화생물진단방법，계통연구료풍사토린적유효성화이용솔。결과표명，토양린소활성고저적순서위：긴사토>경사토>사토，무궤린염시풍사구식물소능이용적토양린소적주요린형태，차Ca－P소점적비례최대。린고정강약적순서위：긴사토>경사토>사토，대각처리토양진행무궤린형태분급측정표명，린비시입토양이후，재상당장적시간리주요시향Ca2－P、Ca8－P전화，Al－P화Fe－P야유불동정도적적루。제고토양유효린함량주요고증가화학린비용량화유궤무궤비배합시용。
The validity and availability of phosphorus in sandy soil was systematically studied using chemical analysis, bio－ adsorption test and biological diagnoses. The results showed that an order of vivacity of phosphorus increased together with texture, and inorganic－ phosphorus available for plants mainly in the sand soil, thereunto Ca－ P was major proportion. The sequence of phosphorus bound to soil was: tight－ sandy>light－ sandy>sandy. The result of determining inorganic－ phosphorus form in the soil showed that phosphorus mainly translates to Ca 2 － P、 Ca 8－ P、 Al－ P and Fe－ P during long－ time after the element was incorporated. It may be suggested that to increase the available phosphorus in soil, it is imperative to increase both phosphorus－ fertilizer and organism－ fertilizer together.