共查询到20条相似文献,搜索用时 62 毫秒
1.
2.
兴义市从2000年第一次引进30台"合盛"牌微型耕整机以来,通过农业综合开发、商品粮基地建设等项目的实施,特别是2005年以来连续五年实施农民购机补贴,使我市的微型耕整机绝对拥有量从最初不到100台,发展到3600~ 相似文献
3.
南江县举办微型耕整机现场会南江县政府十分重视农机新机具、新技术推广工作,在日前召开的全县“三秋”生产工作现场会上,县府专题安排农机推广部门进行微型耕整机现场耕、旋示范表演和宣传,受到县府领导的肯定,并就搞好农机推广工作提出了建议,各区、乡也纷纷举办现... 相似文献
4.
微型手扶拖拉机和微型耕整机是适应塑料大棚、果园、苗圃及山区茶园、桑园的特殊农艺要求,在手扶拖拉机的基础上发展起来的农机具。 相似文献
5.
20 0 1年 ,屏南县加大农机推广工作的力度 ,县政府拨出专项资金 ,对该县农民购买耕整机给予每台补助 1 0 0 0元 ,大大调动农民购机的积极性 ,全年共推广龙岩产微型耕整机 3 0台屏南县农机推广工作取得新进展@苏兴枝 相似文献
6.
<正>目前,四川省三台县微型耕整机械类拥有量已达3.5万余台,为促进三台县现代农业发展、农民持续增收、提高农作物耕种收发挥了积极作用。但从农机户安全使用情况来看,微型耕整机械分布到千家万户,作业面宽且又十分分散,难于集中监管,在实际实用操作过程中,确有部分农机户文化素质较低,缺乏农机安全意识,严重忽视农机田间作业安全危害,购机时不认真阅读使用说明书,使用前不愿主动参加农机操作技术培训,作业 相似文献
7.
8.
春耕期间,新干县农村出现了前所未有的购买小型农机热。截止到4月底,全县农民共购买了农机具325台,其中微型手拖、耕整机103台、手拖20台、手拖配套旋耕机56台、2~15马力小型柴油机91台、小水泵55台。增长迅猛的是微型手拖和耕整机,增长量接近前3年增长量的总和;旋耕机、小型柴油机的增长是1997年同期的2倍多。这些新增的农机具在春耕生 相似文献
9.
10.
11.
12.
13.
14.
15.
《Journal of Agricultural Engineering Research》1998,69(3):249-254
A model to represent the discolouration of dried powder of carrots as a function of temperature was developed. Two types of carrots, Asian and European, containing large amount of lycopene and β-carotene, respectively, were tested. The dried powder was stored under an atmosphere with O2and at three different temperatures, 5,20 and 35°C. The surface colour of the powder was monitored during storage by a Hunter colour ratioa/b. In the proposed model, the rate of oxidation was assumed to be represented by the product of the fraction of concentration of oxidized pigment at arbitrary time and a specific rate of oxidation of pigment. The rate parameters in the proposed model were calculated by fitting the experimental data with smooth curves by trial and error at the end of the induction period but before discolouration took place. The frequency constant and activation energy, expressing the temperature dependence of the rate parameters, were expressed by the Arrhenius relation. The simulation results of a Hunter colour ratioa/bof dried powder at 25°C showed good agreement with the experimental data, suggesting that the proposed model was effective for the prediction of discolouration of dried powder of both types of carrot. The use of the induction period in the manner described may enable the shelf life of dried powder to be predicted. 相似文献
16.
17.
感官检验棉花的品级,这是农村常见的一种检测手段.它的一个主要特点就是存在不确定性.这是由于检验员的品级检验水平存在一定的差异,其中有很多因素制约着检验的结果.文章对影响感官检验结果的因素进行了系统的分析. 相似文献
18.
19.
The fractional outflow rate of water from the rumen, measured as the rate of disappearance of the chromium complex of ethylenediamine tetra-acetic acid, was related to a number of dietary factors. A multiple regression equation was derived which expressed fractional outflow rate as a function of the intakes of dry matter, ash, acid-detergent fibre and crude protein.The data analysed consisted of 243 observations for sheep on 59 diets, including forage, concentrate and mixed diets. The ranges covered by the data were: fractional outflow rate 0.7–3.6 day?1; dry matter intake 560–1400g/day; ash 4–30%, acid-detergent fibre 7–41%, crude protein 5–26 % of dry matter; there were no observations for sheep of less than 34 kg liveweight.The equation accounted for 56·3 % of the total variance. Between-sheep variance could not be calculated for the whole of the data but was undoubtedly substantial since, for a sixth of the data, it was known to account for 38 % of the total variance. 相似文献
20.
从灾害经济学的角度探讨了城镇供水优化调度的必要性和可能性,认为在缺水不可避免的情况下,对供水进行优化调度可以减小缺水带来的损失,产生较好的减灾效益,特别是可以大大减小严重干旱的灾害效应。并根据水资源的特性,提出了缺水损失的计算模式以及优化调度的原则和方法。 相似文献