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仪征市稻田综合种养调研报告 总被引：1，自引：0，他引：1
为分析仪征市稻田综合种养模式的发展现状及存在问题,探索出较适合当地发展的稻田综合种养模式,根据2017～2018年该市稻鸭、稻虾主要两种稻田综合种养模式的调查数据,分析了不同稻田生产模式在生产成本、经济效益上的差异,技术发展的成熟度,在该市的产业化程度,以及推广稻田综合种养存在的问题。调查表明,该市稻田综合种养存在规模化程度不够、基础设施薄弱、成本投入相对较高、品牌效益不突出、综合种养生态及社会效益提升有限等问题,需加大政府的扶持力度,加强稻田综合种养关键技术的培训宣传与推广,将稻田综合种养与当地农业生产实际情况相结合,因地制宜选择适宜当地自然条件的生产模式。 相似文献
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为深挖稻蟹种养模式潜力，2019—2021年在辽宁滨海盐碱稻区对水稻单一种植模式（MR）、水稻+成蟹种养模式（RC）、水稻+扣蟹种养模式（RYC）、水稻+成蟹种养生态减施模式（ORC）和水稻+扣蟹种养生态减施模式（ORYC）的水稻产量、稻米品质及稻蟹投入产出进行了试验和调查分析。结果表明，不同种养模式间水稻理论产量、实际产量及稻米加工品质差异均不显著；稻蟹种养模式显著提高经济效益；生态减施模式在提高生物多样性的同时增加经济效益；生态减施模式下成蟹种养较扣蟹种养具有更高的市场稳定性。 相似文献
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作为作物学科创新发展的重要方向和“全球重要农业文化遗产”,稻田生态种养已经历数千年的发展,近年来尤其得到广泛的关注。为促进作物学科联合发展,总结和展示国内外稻田生态种养的成果与经验,推动稻田生态种养进一步发展与合作,国际(长沙)稻田生态种养发展论坛组委会决定由湖南农业大学等单位主办“第一届国际(长沙)稻田生态种养发展论坛”。届时将邀请国内外知名专家做主题报告,围绕稻田粮、油、鱼、禽复合生产,共同探讨产前、产中、产后的经营模式、技术模式和生产模式,分享各国农业特别是中国稻田生态种养的发展经验,发布稻田生态种养的最新成果等。大会相关事项通知如下。 相似文献
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为探讨适宜长江流域棉区棉田间作栽培的模式,以增加棉花产量、改善纤维品质和获得更高的经济效益。比较了棉花间作大豆、棉花间作玉米和棉花间作甘薯三种模式的经济效益、棉花产量、纤维品质、干物质积累及叶面积指数的变化特点。结果表明:三种间作模式较单作棉花可增加纯收入,棉花产量和干物质积累量及单位面积成铃数均增加;马克隆值变优和断裂比强度提高;在棉花盛蕾期棉花叶面积指数三种模式均比对照提高,在棉花盛铃期及以后的棉花叶面积指数因模式不同而有差别。棉花间作甘薯和棉花间作大豆模式的籽棉产量较高、经济效益好,纤维品质较优,其生产优势较为明显,适宜在长江流域棉区推广。 相似文献
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稻田综合种养作为中国稻作生产的重要组成部分，有着悠久的历史，历经上千年的演变逐步由散养形成了现代种植与养殖的配套技术体系，主要模式已由稻鸭、稻鱼发展为稻虾、稻蟹、稻鳖、稻蛙等多种种养结合模式，并取得较好的社会、生态和经济效益。综述了稻田综合种养的发展历程、应用及其种养模式，以及稻田综合种养下水稻生长及其经济、生态和社会效应，并且从田间工程改造、种养结合技术、产品品牌建设等方面论述了稻田综合种养中存在的问题，认为稻田综合种养的发展要强化政府引导、技术支撑和产业开发等，以期充分挖掘稻田综合种养的生产潜力，助力农业提质增效和绿色可持续发展。 相似文献
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间作模式及氮、磷肥对玉米—花生间作体系产量和经济效益的影响 总被引：1，自引：0，他引：1
《花生学报》2015,(4)
大田栽培条件下,研究了不同玉米—花生间作模式及不同施氮、磷肥用量对玉米—花生间作体系群体产量及经济效益的影响。结果表明:与单作相比,四种玉米—花生间作体系均具有明显的间作优势,LER大于1,尤其在2∶2间作模式下,其LER为1.40,间作体系总产量及总净产值最高,间作优势最显著。在不同氮、磷肥水平下,玉米花生2∶2间作模式的LER为1.49~2.53,尤其在低氮、高磷水平下间作优势最高。在2∶2间作模式下,不同施氮、磷水平各花生品种产量间均无显著差异,而玉米产量及间作体系总产量差异达到极显著水平。在本试验范围内,间作产量优势随着施氮量的增加先增加后大幅度减少,施磷水平处于高水平(180kg/hm2)时,间作体系总产量最高。说明玉米花生间作选用2∶2模式,减量施氮,增施磷肥,并选用适宜的耐荫花生品种,可有效提高群体经济效益。 相似文献
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为了充分发挥和利用3S技术、生长模型和管理知识模型的优势,探索适合中国国情的精准农业关键技术集成方法及应用模式,以软件开发方法论为指导,充分结合小麦生长模型、管理知识模型和3S技术,应用ASP.NET和C#开发Web应用程序,建立了基于模型和3S技术的网络化数字麦作系统.该系统以品种、气候、土壤及生产条件等为基本输入,具有麦作区划、栽培方案设计、模拟预测、策略分析、动态调控、生长监测、精确麦作、生产力评价、病虫草害管理、智能学习、系统管理和系统帮助等功能.以江苏省部分县市的气象、土壤、品种和生产资料为基础,对本系统进行了初步测试与应用,表明该系统可为农业生产者、管理人员和科技人员提供麦作数字化和科学化的决策支持. 相似文献
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《Journal of Crop Improvement》2013,27(1):303-312
Summary Systematic research on the effect of vesicular-arbuscular mycorrhizal fungi with different agricultural crops, sand dune plants and plantation crops has been carried out in Bangladesh for last few years. Large numbers of VA-mycorrhizal fungi have been detected in different soil types for identification and inoculum production and for use in nurseries and the field as an alternative to chemical fertilizers and pesticides and to progress towards nature farming. The VAM fungi not only absorb and translocate immobile nutrients like phosphorus, zinc and copper (especially phosphorus) through external hyphae, but also play important roles in inter- and intra-specific transfer of carbon, phosphorus, and nitrogen from plant to plant. VAM fungi may also protect plants from certain root-infecting pathogens, improve plant-water relations, enhance the establishment and growth of micro-propagated plants, and increase plant tolerance to salinity. VAM fungi can improve the ecological and environmental conditions of the country and its agriculture by reducing the farmer's dependence and expenditure on chemical fertilizers and pesticides. Effective mycorrhizal inoculum can be introduced directly to the field or indirectly through the production of VAM-infected seedlings from nurseries. The gap of knowledge on the occurrence of VAM fungi in association with different agricultural and forest crops is still immense in Bangladesh. This article has been prepared to draw attention of agricultural scientists, plant physiologist, forest managers, policy-makers and different government and non-government officials towards nature farming systems utilizing VAM and possibility of utilizing VAM in production system. 相似文献
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Keigo Noda Masayasu Maki Kanae Miyaoka Koki Homma Hiroaki Shirakawa Kazuo Oki 《Paddy and Water Environment》2015,13(4):487-493
In Southeast Asia, economic and population growth are expected in the near future. Rapid change is anticipated especially in the Lao PDR. Concern has been expressed that population growth will lead to an increased demand for food and economic growth to changes in the use of land. For food production to keep pace with the growth of population, it is very important to understand decision-making in rice paddy cultivation in urbanizing areas; for this reason, this study with the SEM model was conducted. The original data were collected by a questionnaire survey in some Lao villages; the survey included questions on various conditions, such as the availability of water in the dry season (irrigation), the access to a city, and job opportunities other than farming. The findings of the study demonstrate that the planting of a second rice crop was related to such factors as the productivity of rain-fed rice and cash crops and, most importantly, job opportunities other than farming. 相似文献
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分析阐述了福州市种粮大户发展现状,及其在发展粮食生产中的作用与面临的困难,并提出了扶持种粮大户发展的对策建议。 相似文献
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我国是传统的农业大国,近年来,因受传统的农业耕作方式、农业生态环境功能利用不合理、农业资源短缺及人口剧增导致掠夺式开发、城镇化发展等原因的影响而使生态环境遭到严重破坏,必须通过提高国民的认识水平、建立农业生态安全体系、科教兴农、控制农村人口数量、建立健全环境法规及完善政府宏观调控机制等有效措施的实施,才能实现农业的可持续发展。 相似文献
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Ali Asadollahpour Maryam Omidi Najafabadi Seyed Jamal Hosseini 《Paddy and Water Environment》2016,14(1):221-229
This study designed an organic farmer's behavior model based on the Ajzen’s theory of planned behavior. The methodology was Mixed Method Research. In the qualitative phase, ten rice producers who received healthy product certification from Standard Organization were interviewed. The results of qualitative research showed that factors affecting the organic farming conversion consisted of facilitating factors and barriers. Facilitating factors include motivations and profits and barriers include challenges and costs. In quantitative phase, 250 rice producers were randomly interviewed. The results of quantitative research showed that attitude and subjective norms of rice producers have a significant positive effect on their intension toward organic farming. Ajzen’s model has been improved by adding variables such as knowledge, self-identity and moral obligation . As a result, the model is improved and approximately 92 % of the variance of rice producers’ behavior in organic farming is explained by research variables. 相似文献