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- 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 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。
- 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。
- 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。
- Under same fertilizer level, rational close planting and increase of basic seedlings were contributive to increase of yield. 在相同的肥力水平下,增加基本苗,合理密植有助于提高产量。
- Urease activity may indicate the fertilizer level of total N, alkaline N, and organic matter in vegetable garden and orchard. 脉酶活性可表征果园地、菜园土的全氮、碱解氮和有机质的肥力水平。
- The Effects of Cutting Frequency, Seeding Ratio and Nitrogen Fertilizer Level on the Yield of Mixture Pasture of the Hemarthria compressa and Trifolium repens. 刈割频度、播种比例和施肥量对牛鞭草和白三叶混播草地牧草产量的影响。
- 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
- In general nitrogen fertilizer level, the biomass and the yield of intercropped wheat is compared with monocropping increased 30.6% and 12.8% respectively. 在常规施氮水平下,间作小麦生物量较单作小麦高30.;6%25,产量较单作增加了12
- Effects of fertilizer level on plant growth, development and yield of muskmelon in spring and autumn were studied under organic and conventional production systems. 摘要在有机和常规两种生产系统中,研究了不同施肥水平对春秋两季甜瓜生长发育和产量的影响。
- Effects of Fertilizing Levels on Output and Quality of Artemisia annua L. 青蒿;施肥水平;产量;青蒿素含量
- I'd like a room on the upper level. 我想要楼上的房间。
- Flowers are often fertilized by bees as they gather nectar. 蜜蜂采蜜时常使花受粉。
- An optimum planting density must be employed to get a high yield, depending upon soil condition, varietal tillering ability, fertilizer level, number of plants per hill, and planting season. 获得高产必须采用最适植株密度,视土壤条件、品种分蘖力、肥力水平、每蔸苗数和播种季节而定。
- We need a mechanical digger to level the ground. 我们需要一台挖掘机来平整土地。
- I hope you'll be on the level with me. 我希望你对我坦率布公。
- She needs to win this point to level the score. 她要赢得这一分才能将比分扳平。
- Keep a level head and phone the Fire Department. 保持冷静,打电话给消防署。
- 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。
- 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;