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水稻育插秧机械化技术对于水稻生产全程机械化的实现意义重大,积极推广水稻育插秧机械化技术有利于解放农业生产力,提高水稻产量及质量,促进农业产业化发展。由于众多限制因素,当前水稻育插秧机械化技术的推广工作还有待进一步扩展。本文将就水稻育插秧机械化技术的推广实践进行简要分析。 相似文献
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水稻育插秧机械化是农业机械化的重要体现和要求,是增加水稻生产效益的有效方法.也是加快社会主义新农村建设的必由之路。但是.当前许多地方水稻育插秧机械化总体发展缓慢。机插面积总量偏小的问题。已经明显制约了水稻生产的发展.加速推进水稻机械化插秧工作就显得更加重要和紧迫。如何推广水稻育插秧机械化.加速推进水稻机械化插秧工作发展。笔者近年来积极进行研究探索和实践.感到应注重把握好以下几个问题: 相似文献
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水稻育插秧机械化技术是水稻生产的重要环结,如果没有水稻育插秧机械化,就谈不上水稻生产全程机械化,就没有农业现代化。文章主要阐述水稻育插秧机械化技术推广现状、制约因素及相关建议。 相似文献
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肥东县是农业大县,也是粮食生产大县,水稻生产是该地区农业生产重中之重,关系到粮食安全大局,也是农民种田收入的主要来源。近几年来,水稻生产全程机械化推广步伐加快,但其中的育插秧机械化技术发展相对滞后,逐渐成为水稻生产全程机械化发展过程中的瓶颈。因此,解决好水稻育插秧机械化技术推广应用中的问题至关重要。 相似文献
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水稻是我国最重要的粮食作物。加快推进水稻生产机械化,是提高农业综合生产能力、保障粮食安全的迫切需要。推进水稻生产全程机械化,重点和难点都在育插秧。加强育插秧技术培训,是推进育插秧机械化的关键措施。从2006年以来,农业部每年年初都举办全国水稻育插秧机械化技术培训班, 相似文献
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水稻育插秧机械化技术推广难点及应采取的措施 总被引:1,自引:0,他引:1
机械化育插秧技术是现代水稻作物生产的发展方向,但在水稻机械育插秧机械化推广过程中仍然存在着农机与农艺结合难、推广经费不足、宣传力度不够等问题.随着农业现代化的推进,国家购机补贴等惠农政策的进一步落实,未来几年是加快发展水稻机械化育插秧技术的大好时机. 相似文献
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2011年,江门市水稻生产机械化综合指标达到68.5%,高于全国平均水平5个百分点。其中机插秧率达14%,处于全省领先水平,但低于全国平均水平11个百分点。为了加快水稻育插秧机械化发展步伐,促进江门市农业机械化又好又快发展,借"全国水稻育插秧机械化技术培训班"在广东省江门市举办的东风,江门市定下水稻育插秧机械化发展新目标,争取2012年机插秧率达25%,机插秧面积由39.36万亩增加到75万亩。 相似文献
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从浦城县农业生产特别是水稻产粮大县的实际情况入手,分析浦城县水稻机械化育插秧薄弱环节,提出发展浦城县水稻机械化育插秧的发展方向和具体措施。 相似文献
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《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
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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
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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
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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