Experiments reveal that using soil seed bank, seed flow, artificial seeding and simulating Tamarix spp. developing naturally can nurse and restore desert vegetation and improve desert ecological environment on the premise of supplying abandoned water of industry or agriculture.
通过群落改造技术试验表明,在有农业或工作弃水供给的条件下,充分利用土壤种子库、种子流或人工撒播补充种源,模拟柽柳种群自然发生,即可达到保育和恢复荒漠植被,改善荒漠生态环境的目的。
参考来源 - 克拉玛依农业综合开发区外围荒漠植被保育与恢复技术模式研究·2,447,543篇论文数据,部分数据来源于NoteExpress
Within the operating conditions, the extraction time depended on the extraction pressure and CO2 flow rate. The kiwi fruit seed oil can be extracted fully for 120-150min.
萃取时间的长短在一定范围内依赖于CO_2流量以及压力的大小,本试验萃取时间120~150分钟即可达到完全萃取。
The air-liquid two-phase flow of the seed precipitation process in two air-agitated tanks with different structures was numerical simulated in three dimensions.
以两种不同结构的空气搅拌式种分槽为研究对象,完成了晶种分解过程气—液两相流动的三维数值模拟。
In certain conditions pressure and velocity distribution of air flow inside the conical holes of the seed-metering wheel can be analysed and calculated approximately as in an angular region.
论证了在一定条件下,排种器锥孔中的压力和速度分布可以近似的按角形域进行分析和计算。
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