1.
Effects of dry cultivation with straw mulching on soil nitrogen fertility in late-rice paddy field
覆草旱作对晚稻田土壤氮素肥力的影响
2.
Study on Nitrogen Transformation of Various Fertilities Soil in Greenhouse
不同肥力水平大棚土壤氮素转化的研究
3.
Effects of Nitrogen Application on Dry Matter Accumulation,Nitrogen Uptake,Yield,and Quality of Flue-cured Tobacco in Low Fertilility Soil
低肥力土壤施氮对烤烟干物质积累、氮素吸收及产质量的影响
4.
Relationship between soil nitrate,nitrogen balance and utilization in rainfed land
旱地土壤硝态氮与氮素平衡、氮肥利用的关系
5.
Effect of straw returning to field on the soil fertility and yield under the biological and nitrogen manipulation
氮素和生物调控下稻草还田对土壤肥力和产量的影响
6.
Studies on Nitrogen Absorption, Distribution and Utilization in Flue-cured Tobacco under Higher and Lower Fertility Conditions
高低土壤肥力条件下烤烟对氮素吸收、分配和利用的研究
7.
Effects of Combining Application of Organic (Green Manure) and Mineral Fertilizers on Nitrogen Nutrition Uptake of Potted Cotton and Fertility of Soil;
有机（绿肥）与无机肥料配合对盆栽棉花氮素营养吸收及土壤肥力的影响
8.
The Effect of Fertilizing Management on Nitrogen Transition in Black Soil;
培肥方式对黑土区土壤氮素转化的影响
9.
Effect of Long-term Application of Fertilizer and Rice Staw on Soil Nitrogen Fertility and Soil Productivity in Reddish Paddy Soil
长期施用化肥和稻草对红壤性水稻土氮素肥力和稻田生产力的影响
10.
Effects of Nitrogen Fertilizer Regulation on Vegetables Nitrogen Utilization and Soil Nitrate-N Residue
氮肥调控对蔬菜氮素利用及土壤硝态氮残留的影响研究
11.
Effect of fertilization on fertility and nitrate accumulation of black loessial soil of dry land in Loess Plateau
施肥对黄土旱塬区黑垆土土壤肥力及硝态氮累积的影响
12.
Effects of Slow/controlled Release Compound Fertilizer on Soil Nitrogen and Enzyme Activity;
缓/控释复合肥料对土壤氮素和酶活性的影响
13.
Effects of Manure and Chemical Fertilizers Application on Nitrogen Transfer in Black Soil
农肥和化肥对东北黑土土壤氮素转化作用的研究
14.
Studies on Change Law of Nitrogen with the Situation of Long-Term Fertilization in Typical Soils in China
我国典型土壤长期定位施肥下土壤氮素时空演变特征研究
15.
The total phosphorus requirement is relative to the potential of soil phosphorus and nitrogen fertilizer application.
总磷需求量与土壤磷潜力和施用氮肥有关。
16.
Effect of Different Soil Fertility Levels and Nitrogen Application Rate on Wheat Quality
土壤肥力与施氮量对小麦籽粒品质的影响
17.
Influence of Long-term Fertilization on Nitrogen Supply Capacity in Different Thermal Zones Soil
长期施肥对不同热量带土壤供氮能力的影响
18.
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。