绍兴文理学院学报
紹興文理學院學報
소흥문이학원학보
Journal of Shaoxing University
2012年
7期
48-51
,共4页
“稻-蛙”共作%土壤氮素%动态变化
“稻-蛙”共作%土壤氮素%動態變化
“도-와”공작%토양담소%동태변화
rice-frog ecosystem%soil N%dynamic variation
通过大田试验,研究了在＂稻-蛙＂共作生态农业模式下土壤中各种形态氮素的动态变化状况.试验结果表明,施肥后土壤中各种形态氮素含量达到最大值,随着时间逐渐增加,其含量均逐渐降低.与处理CK相比,在＂稻-蛙＂共作系统中,土壤中NH＋4-N浓度显著升高,可溶性有机氮含量显著降低,而NO-3-N浓度相当.
通過大田試驗,研究瞭在＂稻-蛙＂共作生態農業模式下土壤中各種形態氮素的動態變化狀況.試驗結果錶明,施肥後土壤中各種形態氮素含量達到最大值,隨著時間逐漸增加,其含量均逐漸降低.與處理CK相比,在＂稻-蛙＂共作繫統中,土壤中NH＋4-N濃度顯著升高,可溶性有機氮含量顯著降低,而NO-3-N濃度相噹.
통과대전시험,연구료재＂도-와＂공작생태농업모식하토양중각충형태담소적동태변화상황.시험결과표명,시비후토양중각충형태담소함량체도최대치,수착시간축점증가,기함량균축점강저.여처리CK상비,재＂도-와＂공작계통중,토양중NH＋4-N농도현저승고,가용성유궤담함량현저강저,이NO-3-N농도상당.
The dynamic variations of soil N elements in the rice-frog ecosystems through the field experiment were discussed.The results indicate that the content of soil N elements reached the maximum value after the fields were fertilized.Then,it began to slow down as time went by.Compared with the control experiment（CK） in rice-frog ecosystems,the content of NO-3-N changed less,the content of NH＋4-N increased notably and soluble organic N reduced sharply.
