您要查找的是不是：
- In the mean time,we also analysed changing laws of Lou soil?s physical properties in heavy loam soil region under different fertility level. 同时 ,还着重分析了重壤带的 土娄 土在不同肥力水平下其物理性质的变化规律。
- The chloroform fumigation-incubation method was used to measure the biomass-C and-N ofsoils with different fertility levels. 应用氯仿熏蒸培养法测定不同肥力水平的土壤生物量-C和-N。
- Humus composition of black soil and its organo-mineral complexes under different fertility level 不同肥力条件下黑土及其有机无机复合体的腐殖质组成
- different fertility level 不同肥力
- Effect of different fertilization level on the growth of Cande Labra Aloe 不同施肥水平对木立芦荟生长的影响
- Phosphorous Retention and Supply in Microaggergates of Brown Earth with Different Fertility Levels in Liaoning Province 棕壤不同粒级微团聚体中磷素的保持与供应
- China has entered a period of low fertility level since1990' s. 计划生育行政执法作为计划生育行政管理的基本手段和方式,是整个计划生育行政管理活动中一个必不可少的中间环节。
- STUDIES ON SOME INDEXES OF ORGANIC MATTER IN BROWN-YELLOW SOILS WITH DIFFERENT FERTILITY LEVELS 不同肥力棕黄土(耕作棕壤)几项有机质指标的研究
- ECONOMIC BENEFIT ANALYSIS OF MLA CLONE, EUCALYPTUS UROPHYLLA FOREST ON DIFFERENT FERTILIZER LEVEL 尾叶桉MLA无性系林分不同施肥处理经济效益分析
- Yield Effect and Benefit of the Wheat in Different Fertilizer Level, Quantity and Composition 小麦不同施肥水平与施肥结构的产量效应和效益分析
- The effects of different fertilization level on grain protein and free amino acid content of organs above ground of different wheat variety 不同施肥水平对不同品种小麦籽粒蛋白质和地上器官游离氨基酸含量的影响
- The difference of fertility level of the main purple soil , rice soil and yellow soil is bigg. 主要土壤类型紫色土、水稻土、和黄壤,肥力水平差异较大,全量、有效态含量在不同土壤类型不一致。
- Effects of Different Fertilizer Levels on Seed Yield of Flat Brome Grass 不同施肥水平对扁穗雀麦种子产量的影响
- There are still disparities and instability in fertility levels between different regions and areas. 生育水平在不同的地区之间存在着差异性和不平稳性。
- Whether or not the low fertility level can be stabilized is a matter of great importance and one that would affect the overall situation. 能否稳定低生育水平，事关全局，影响重大。
- Effect of Biological Fertilizer on Growth and Yield of Winter Wheat by Seed-Dressing under Different Fertility Levels 不同肥力水平下激抗菌肥拌种对小麦生长发育及产量的影响
- Since 1990, the fertility level in China has been stably declining with its TFR dropping from 2.29 in 1990 to 1.80 in 2001, less than the replacement level. 中国自1990年以来，生育水平呈平稳下降趋势，生育率从1990年的2.;29下降到2001年的1
- Took Huaimai19 and Yannong19 as materials, the effects of nitrogen application rate on RVA profile characters under different land fertility levels were studied. 摘要为给小麦优质栽培提供理论依据，以淮麦19和烟农19为材料，研究了地力水平、施氮量对小麦淀粉RVA特性的影响。
- Study on Winter Wheat Effect of Microbial Fertilizer Seed Dressing by Difference Fertilize Level 不同肥力水平下小麦用生物菌肥拌种效果研究
- The Biological Response of Broomcorn Millet Root to Drought Stress with Different Fertilization Levels 不同施肥水平下黍子根系对干旱胁迫的反应
