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- With the increasing of nitrogen rate, the curves of RVA profile decreased under the high, middle and low soil fertility levels. 两供试品种在高、中、低三种地力水平上，RVA谱曲线均随施氮量的增加而降低。
- The results showed that soil fertility levels and nitrogen rate had significant or extremely significant effect on RVA profile characteristics except one or two characteristics. 结果表明，地力水平、施氮量对RVA谱特征值的影响除个别指标外，均达到显著或极显著的差异。
- In this study, Yangjing 9538 was planted in seedling raising plates with different treatments of seedbed soil fertilizing levels. 本试验以扬粳9538为供试品种, 在不同床土培肥条件下, 观测了超秧龄秧苗的生长特征。
- Effects of Nitrogen Application on RVA Profile Characters under Different Soil Fertility Levels 不同地力水平下施氮量对水稻淀粉RVA谱特征的影响
- Effects of nitrogen rates and soil fertility levels on root nitrogen absorption and assimilation and grain protein content of winter wheat 土壤肥力和施氮量对小麦根系氮同化及子粒蛋白质含量的影响
- It's an effective way to maintain soil fertility. 这是保持土壤肥力的一个有效办法。
- How do earthworms influence soil fertility? 蚯蚓如何影响土壤肥力?
- soil fertility levels 土壤肥力等级
- Soil fertility level 施氮量
- 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。
- The soil fertility shows a decrease trend in cornpea rotation. 玉米、豆轮作，土壤养分均呈下降趋势。
- Influence of thinning on soil fertility in artificial forests. 抚育间伐对人工林土壤肥力的影响。
- 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。
- The Impact of Soil Fertility on the Yield of Phyllanthus Emblica L. 土壤肥力对余甘子产量的影响。
- A green manure is a crop grown mainly to improve soil fertility. 种植绿肥作物主要是为使土壤更加肥沃。
- 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。
- Strip check space varies with plot slope, soil fertility and irrigation. 条畦宽度随地块坡度、土壤肥力和灌溉而变化。
- 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。
- The paddy?upland system increased clay dispersion content and soil fertility. 水旱轮作可增加土壤黏粒含量,提高高沙土肥力水平;
- But we should also clearly see that there is still imbalance in development in various areas, instability in fertility levels in many regions, and the high birth rate in others. 但也要清醒地看到，目前各地区的计划生育工作发展不平衡，许多地区的生育水平还不稳定，部分地区的人口出生率还比较高；
