| 1. | Effects of earthworms on nitrogen mineralization in fluvo - aquic soil
接种蚯蚓对潮土氮素矿化特征的影响 |
| 2. | Availability of phosphates and effect of different forms of nitrogenous fertilizer
合成磷源在石灰性潮土中的有效性及氮肥形态对其的影响 |
| 3. | Effects of a long - term located fertilization on enzyme activity of the non - calcareous fluro - aquic soil
长期定位施肥对无石灰性潮土酶活性的影响 |
| 4. | Effects of long - term located fertilization on biological environment of non - calcareous fluro - aquic soil
长期定位施肥对无石灰性潮土生物环境影响研究 |
| 5. | The humification cofficient of the wheat straw determined with the nylon bag method was 12 . 25 %
用锦纶袋法测定小麦秸秆在潮土中的腐殖化系数为12 . 25 % 。 |
| 6. | Effect of base to dressing ratio of nitrogen fertilizer on wheat yield and quality in light - loamy chao soil
轻壤质潮土氮肥基追比对小麦产量与品质的影响 |
| 7. | Effect of long - term located organic - inorganic fertilizer application on fluvo - aquic soil fertility and crop yield
无机肥长期配施对潮土土壤肥力和作物产量的影响 |
| 8. | Study on relationship of soil nutrients and various particles in fluvo - aquic soils on the yellow river flood plain , north china
华北黄泛平原潮土土壤养分与土壤粒级的关系研究 |
| 9. | The comparative study on the two methods for determining the decomposing and retention rate of the organic material in fluvo - agvic soil in henan province was carried out
摘要在河南省潮土上进行有机物料的腐解残留率两种测定方法的比较研究。 |
| 10. | Experiment of different farming methods were carryied out for 4 years , investigated and analyzed to the tide soil humidity and cotton benefit . the right machine plows method was selected
摘要用不同耕作方法做了4年试验研究，对潮土水分及棉田产出情况进行调查分析，选出了适宜的机耕方法。 |
