共查询到20条相似文献，搜索用时 171 毫秒
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罗远鸿 《内蒙古林业调查设计》2020,43(1):63-65
文章从地理条件、土地资源、产业基础、市场需求、预期成效等5个方面分析了洗溪镇发展中药材黄柏的优势。针对缺少管理、缺少标准化技术规程和技术人才、缺少品牌、缺少深加工企业等现实情况,提出了发展黄柏产业的对策和建议,为加快发展洗溪黄柏产业,促进当地精准脱贫提供参考。 相似文献
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泽州县早在上世纪八九十年代就成为全国山楂生产基地。山楂不仅是经济林树种,还是一种常用中药材,经济价值较高。介绍了泽州县发展山楂的历史、目前存在问题以及加快发展的措施。 相似文献
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柴达木枸杞标准化生产经营模式探讨 总被引：1，自引：0，他引：1
文章探讨了柴达木地区发展枸杞专业合作社的意义,分析枸杞生产经营管理上存在的问题,提出以枸杞专业合作社为纽带的标准化生产经营模式、建设思路及其对策建议。 相似文献
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《四川林业科技》2017,(2)
德阳市由于特殊的地理位置和气候因素决定了德阳是中药材生长的宝地,德阳市自古以来就有将野生中药材引种、驯化的历史和习惯,近年来,德阳市中药材规模化种植规模越来越大,截止2015年底止,德阳市中药材栽植面积19 262 hm~2,其中:黄柏、杜仲、厚朴"三木药材"4 882 hm~2、丹参3 238 hm~2、其他中药材3 436 hm~2,产量81 180 t,产值10.52亿元(含中药材初加工收入),平均产值8.1万元·hm~(-2),全市农民人均在中药材种植上收入297元,由此可见,中药材种植为德阳市的经济社会发展做出了一定贡献,对广大农民群众脱贫致富具有十分显著的作用。但是,德阳市中药材发展还很不平衡,还存在诸多问题亟待解决。本文深入调查分析,提出了科学制定发展规划、建立资金投入机制、加强服务体系建设、加快经营主体培育、加强技术人员培训的对策建议,以期对政府制定德阳市中药材种植产业可持续发展有所启迪。 相似文献
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湘南丘陵区林下间种作物生产量与泥沙流失量的关系研究 总被引：4，自引：1，他引：3
通过对湘南丘陵区林下间种农作物和泥沙量的定位测定研究，分别对林下间种的花生、油菜的覆盖度与输沙率和花生、油菜各组成部分的生产量与泥沙量的关系进行了探讨，并建立了林下间种花生、油菜覆盖度的动态变化与输沙率的关系式和花生，油菜各种组成部分生产量对泥沙流失量影响的关系式。 相似文献
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The polyphagous predator Dicyphus tamaninii is widely used in IPM programs on horticultural crops in the Mediterranean basin, where it is commonly found in natural populations.
The development of a mass-rearing protocol is necessary to ensure the permanent availability of this predator for potential
introductions into crops. Introductions occur mainly in those periods of the year when the predator is not present in enough
quantities to spontaneously colonize the crops, as well as to guarantee its presence in IPM horticultural crops. The effects
of two different adult ages and three densities (number of individuals/cage) on mortality and production of D. tamaninii were evaluated in order to develop a mass-rearing protocol. The adult age had an effect on mortality but did not affect the
final production (number of adults + nymphs/female/day). On the contrary, the increased number of adults in the cages had
a strong increasing effect on mortality while reducing final production. These results are of highly important for the development
of a mass-rearing protocol for this natural enemy. 相似文献
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The agroforestry garden system in Maninjau in West Sumatra is characterized by an intensive integration of forest species and commercial crops, forming a forest-like system. The intimate association of different species provides both subsistence and commercial products which supplement rice production. This complex agroforest is managed by the combination between cultural practices and respect of natural processes of vegetation production and reproduction. It represents a profitable production system and constitutes an efficient buffer between villages and protected forest. It is a good model of association between integration of forest resources and cultivation of cash crops in the form of a sustainable and flexible system. 相似文献
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Gum arabic production in Sudan has developed over the years in a well-established traditional bush-fallow system in which
the gum tree (Acacia senegal) is rotated with annual crops. Following the Sahel drought, the gum area has suffered from deforestation and gum production
has declined. Several programs have been developed to stimulate gum production; however, many original adopters have disadopted
gum production and the bush-fallow system. In this paper we apply a logit model to study the decision-making behavior of farmers
in west Sudan and to identify the socio-economic factors influencing disadoption of gum production and gum agroforestry system.
Variables that measure farmer’s wealth were found significant in explaining the disadoption behavior. Off-farm work was also
found to positively influence the disadoption decision. Results show that a higher level of income from annual crops decreases
the probability of disadoption, which suggests that annual crops and gum production do not compete but rather complement each
other within the farm household economy. Therefore, policy measures aiming to boost the production of annual crops in the
region might reduce seasonal labor migration and accordingly stimulate gum production.
相似文献
| Afaf H. RahimEmail: |
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山区土地资源优化配置的主体核心是确定各种农作物、林果、牧草资源的占地比例及规模。装水镇土地资源优化配置利用方向,在于建设发展以板栗、苹果为主的林果生产基地,畜牧养殖业在于发展以消耗饲草为主的大牲畜(主要是牛)和山羊,另外,种植在5级地上的粮食作物,应以旱作为主。 相似文献
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Farmers in the highlands of Ethiopia often plant Eucalyptus on their farmlands. However, growing Eucalyptus, especially on farm- lands suitable for crop production has become a great concern due to its alleged long-term site effects. Our study was conducted at Koga water- shed, Mecha District, northwestern Ethiopia to investigate whether crop- lands afforested with Eucalyptus camaldulensis Dehnh. can be restored for annual crop production after tree harvest. We compared growth and yield of two agricultural crops, barley （Hordeum vulgate L.） and finger millet （Eleusine coracana （L.） Gaertn.）, grown in clear-felled stands of E. camaldulensis and continuously cultivated croplands at twelve paired farmlands under a conventional farming system. Plant height and dry matter production were evaluated as indices of crop growth, while grain weight was evaluated as an index of crop yield. Crop growth and yield measurements averaged over all farmlands differed between land-use types. For both crops, plants grown on clear-felled stands were taller than on croplands. Dry matter production and yield were also significantly greater in crops cultivated on clear-felled stands. Cropland aboveground and belowground dry matter productions were lower by 31.8 and 25.4% for barley and 32.8% and 37% for finger millet, respectively. Clear-felled stands gave an average yield of 2.91 t.ha-1 for barley and 3.27 t.ha-1 for finger millet while cropland gave a yield of 1.97 and 2.31 t.ha-1 for barley and finger millet, respectively. Farmers also responded that farm plots on former eucalypt plantations showed greater crop growth and yield thandid continuously cultivated croplands. Farmers perceived that Eucalyptus plantations improved soil fertility and they preferred clear-felled stands for crop production and wished to plant Eucalyptus on their farmlands. Our results suggest that conversion of agricultural lands to Eucalyptus plantations can increase post-felling yields of cereal crops. 相似文献
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Pasture or permanent crops after slash-and-burn cultivation? Land-use choice in three Amazon colonies 总被引：3，自引：1，他引：2
Land use was examined in three settlements – Pedro Peixoto in Acre and Theobroma in Rondonia, Brazil, and Pucallpa, in Peru.
Research aimed at characterizing the differences in land use after initial slash-and-burn, and presenting hypotheses to assess
the feasibility of improved land uses. Settlers in the Amazon practice slash-and-burn agriculture in forest lands to produce
annual crops. After cropping, lands are converted to pasture, or planted with perennial crops, or fallowed in anticipation
of future annual crop production. Land use after slash-and-burn cultivation in forest lands differed among the colonies examined.
Whereas colonists in Pedro Peixoto converted lands to pasture for cattle production, settlers in Theobroma adopted a strategy
encompassing both dual-purpose (milk and meat) cattle and perennial crop production. The more heterogeneous settlers in Pucallpa,
who included small-scale cattle ranchers and riverine and forest slash-and-burn farmers, gave more importance to perennial
crops. Hypotheses are suggested regarding the described land use differences, and implications for the adoption of agroforestry
are discussed.
This revised version was published online in June 2006 with corrections to the Cover Date. 相似文献
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The world production of tropical fruit was estimated at about 65 Mt in 2002, of which developing countries accounted for 98%.
Although most commercial fruit tree crops are cultivated by large-scale commercial enterprises, smallholder fruit-tree cultivation
receives much attention in projects aimed at rural development, conservation farming and agroforestry in developing countries.
In the Philippines, the integration of fruit trees in smallholder upland farming systems has been promoted since the 1970s.
The aim of this paper is to investigate farmers’ views on small-scale fruit-tree cultivation based on fieldwork conducted
in three upland villages of Northeast Luzon. The factors influencing farmers’ preferences are explored and the costs and benefits
of fruit tree cultivation compared with those for seasonal cash crops over a 10-year period. Markets for fruit-tree products
are identified, at both local and supra-local levels, and risks, uncertainties and opportunities associated with fruit-tree
cultivation are discussed. Despite extensive promotion, the adoption of fruit trees in farming systems has occurred at a relatively
low pace. In contrast, the cultivation of seasonal cash crops, particularly high-yielding rice and corn varieties, spread
rapidly in the 1970s and 1980s. These crops are planted in monocultures with high inputs of fertilizers and pesticides. Farmers
consider fruit trees as a subordinate crop much less profitable than seasonal cash crops, which is in stark contrast with
the results of economic analyses of a 10-year production cycle. The Net Present Value (NPV) for citrus (Citrus reticulate) cultivation is at least two times the NPV for irrigated rice and as much as four times the NPV for corn, even at discount
rates up to 20%. Farmers’ knowledge of tree management and species selection proved to be inadequate, contributing indirectly
to low growth rates and fruit production. Marketing opportunities are not fully utilised as evident from unstable network
channels for fruit-tree sales, lack of expertise in fruit-tree marketing and insufficient knowledge on market demands, quality
production and market location. 相似文献