fertility status meaning in English

生育状况

As regards fertility status , almost all soils are deficient in n and about 90 % are low to medium in p
至于肥力状况，几乎所有土壤缺氮，约90 %土壤低磷或中磷。
Using corn straw and soybean straw , the characteristics of the decaying process and the remainders , the difference of soil fertility status and soil humic acids character in different using ways are studied by normal analysis combined with energy analysis , thermal analysis ( dta , tg , dig ) and infrared spectrum analysis ( ftir )
本文以玉米秸和大豆秸为腐解材料，通过常规分析方法结合能态分析、热分析( dta 、 tg 、 dtg )和红外光谱( ftir )分析研究了荒漠绿洲生态系统下残体的腐解特征以及不同利用方式下土壤养分和土壤腐殖质的变化。