Results 21 to 30 of about 141 (106)
Creative Design of Greenhouse Rolling Machine Based on TRIZ [PDF]
, 2012 针对传统温室大棚卷膜机存在卷膜效率低和劳动量大的问题,基于TrIz理论方法,对温室大棚卷膜机进行了创新设计。分析其功能原理和结构,开发了一种可根据需要自动卷膜及复位的卷膜机。该卷膜机不需要人或外拉电源驱动,而是利用其自身携带的太阳能电池板来产生驱动力,可代替或减轻人的劳动,省时省力,是现代农业机械中的创新产品。Because of low efficiency and large labor problems in the traditional greenhouse rolling machine ...
周树温
core
Response Characteristics of Soil Saturated Hydraulic Conductivity after Returning Orchard to Farmland on the Loess Plateau [PDF]
[Objective] To explore the change rule and influencing factors of soil saturated hydraulic conductivity (Ks) after returning orchard to farmland. [Methods] Aging apple orchards (AO) and orchards with different tillage years (2 a, 4 a, 6 a, 10 a) on the ...
JIA Xiaoxu +6 more
core +1 more source
健康小鼠进食绣球菌对腹腔巨噬细胞分泌肿瘤坏死因子α的影响 [PDF]
, 2018 测定健康小鼠进食绣球菌对腹腔巨噬细胞分泌肿瘤坏死因子α(TNF-α)的影响.SPF级Balb/C健康小鼠分组进食普通饲料、分别含绣球菌饲料、干品、浸汁饮水或其添加物组合、分别含酵母β-葡聚糖饲料、浸汁饮水或其添加物组合;进食一定时间后,分离腹腔巨噬细胞,使用含质量分数10%胎牛血清的RPMI1640培养液培养,TNF-α试剂盒检测上清液中的TNF-α质量浓度.结果表明,强化进食绣球菌组合(绣球菌饲料+干品+浸汁)的小鼠与对照组或酵母β-葡聚糖组合(酵母β-葡聚糖饲料+浸汁)小鼠相比,体质量不升反降 ...
张鸣青 +6 more
core
Beijing Subway Daily — a Project Analysis [PDF]
, 2002 本文通过翔实的调查获取数据，从市场营销、财务分析等角度论证了一个投资项目——北京《地铁专递日报》的可行性。 全文共分五章。 第一章主要介绍北京报业市场的概况，并对传媒广告市场的发展空间作一定的分析。 第二章通过对地铁乘客的调查，了解目标群体的价值和需求，选取目标市场。并结合对地铁各站客流量及周边环境的分析，将地铁各站分成不同的等级，以便有针对性地投入不同的发行力量。 第三章主要是从《地铁专递日报》的定位、发展规划和市场营销策略等角度，介绍该项目的计划。 第四章对合作对象的基本情况、组织机构与管理团队 ...
刘立
core
, 2004 农产品的市场竞争异常激烈 ,对产品质量提出了更高的要求。随着市场经济的进一步完善 ,农产品的品牌经营势在必行。一方面 ,品牌经营可以通过商标注册 ,使品牌得到合法的保护 ;另一方面 ,更重要的是通过农产品的质量管理 ...
戴平生
core
Effects of nitrosigine on Malus hupehensis seedling growth and apple fruit quality [PDF]
[Objective] In order to explore the effects of nitrosigine applied to plants as a fertilizer on the plant growth and fruit quality, the experiment was undertaken so as to provide a theoretical basis for the selection of new silicon fertilizer in the ...
JING Xiuli +6 more
core +1 more source
Shuitu Baochi Xuebao, 2003 在黄土高原沟壑区、丘陵第一付区和丘陵第三付区的山坡地分别布置苹果、梨和枣 进行试验研究,研究得到果园应用新技术能显著增加果树的生长量和提高产量,土壤肥力不 断提高,各肥力指标较同类的农作物地分别提高3%～121%,纯经济收入增加2.8～7倍,产量 和产值的逐年递增率高于农作物地,其相对变动率、绝对变动率和变异系数均低于农作物, 果园生产具有较高的稳定性和恢复弹性的能力.表明黄土高原山坡地建果园是土地资源高效利用的重要途径.
李松 +6 more
doaj +2 more sources
Spatial relationship between root system and soil properties of mature and densely planted Kuerlexiangli pear under long-term strip fertilization [PDF]
[Objective] Kuerlexiangli pear (Pyrus sinkiangensis Yü et Lu.) is the main cultivar in Southern Xinjiang. In recent years, the main trunk dense planting pear orchard has developed rapidly and entered the peak fruiting period.
AN Shijie +9 more
core +1 more source
Progress in developments and applications of the HYDRUS model and associated coupling model packages [PDF]
HYDRUS model is widely used in agricultural irrigation and pollution transport because it can comprehensively consider the movement of water, heat, and pollutants in the soil-plant-atmosphere system.
Bei ZHANG +5 more
core +1 more source
Research progress in globular fruit picking recognition algorithm based on deep learning [PDF]
China is a global leader in fruit production, and fruit picking mainly relies on manual labor, which helps to select fruits according to fruit size and quality to reduce loss in this way.
LI Hui +3 more
core +1 more source