试用概率模型估计海南胶农采用农化服务技术的初步研究

通过对海南民营橡胶生产的实地调查,并应用Probit回归模型,分析海南胶农采用农化服务技术的影响因素,认为胶农所受教育年限、橡胶年公顷产量、施肥技术获取途径等因素都显著影响农化服务技术在民营胶园的应用;同时提出了橡胶树农化服务技术应用建议,以期为改进胶农施肥技术,促进海南橡胶树农化服务技术体系的建设提供依据。

把鼻孔浮出水面 广州天河奥特农化新技术有限公司创业案例

1．创业之初创业者对创业要有哪些清晰的认知？比如行业、技术、市场、资本等等。 2．具有强大战斗力的创业团队的重要性在什么地方？核心创业人物对企业的驾驭体现在什么方面？

涉农央企发力保障春耕生产

今日惊蛰,又是一年春耕时。随着大江南北陆续进入春耕时节,柴油、化肥等农用物资需求量持续攀升。受疫情影响,忙于春耕备耕的农民可能遭遇新挑战——物流不畅、农资送不到田头等问题。习近平总书记日前强调要求,当前要在严格落实分区分级差异化疫情防控措施的同时,全力组织春耕生产,确保不误农时,保障夏粮丰收。

一诺千金 暖风化雨 中海化学持续助力“丰宁县帮扶项目”

'阴阴夏木正可人,田园光景处处新。'7月下旬,正值作物生长关键时期,海油富岛(上海)化学有限公司副总经理沈兵博士一行3人赴河北省丰宁满族自治县,深入开展工业和信息化部原材料工业司'丰宁县帮扶项目'的后续工作。回顾今年4月,工业和信息化部原材料工业司赴丰宁县开展扶贫调研工作,中海化学受邀一同参与调研,调研组向当地捐赠化肥,并签订农化服务协议。

民间农技成果推广亟须重视

长期以来,人们对科研院所、大专院校等“名门、专家式”的技术科研成果的推广应用较重视,却忽视了对民间农业技术的总结推广,其实民间技术成果具有广泛的实用性。

Application of least squares vector machines in modelling water vapor and carbon dioxide fluxes over a cropland

Least squares support vector machines (LS-SVMs), a nonlinear kemel based machine was introduced to investigate the prospects of application of this approach in modelling water vapor and carbon dioxide fluxes above a summer maize field using the dataset obtained in the North China Plain with eddy covariance technique. The performances of the LS-SVMs were compared to the corresponding models obtained with radial basis function (RBF) neural networks. The results indicated the trained LS-SVMs with a radial basis function kernel had satisfactory performance in modelling surface fluxes; its excellent approximation and generalization property shed new light on the study on complex processes in ecosystem.

Effects of DPC on Agronomic Traits and Economic Characters of Machine-Harvested Cotton in the Yellow River Valley of China and Chemical Control Techniques

[Objective] The aim was to investigate the effects of DPC chemical controlling technique on agronomic traits, yield and quality of machine-harvested cotton in the Yellow River Valley of China, and clarify the reasonable control period and the application amount of DPC. [Method] The new machine-harvested cotton variety Hengmian HD008 was used as the test material, and 3 different DPC treatments were set. [Result] DPC significantly reduced plant height and branch length, reduced branch angle and leaf area, so the rational control can effectively shape the ideal plant type of machine-harvested cotton. DPC had significant effects on yield and yield components, and the proper amount of DPC could increase the number of bolls during hot days, the number bolls in autumn and the total number of bolls. It increased the boll weight and seed index, but decreased lint percentage decreased, and proper amount of DPC could increase the yield. DPC significantly increased the specific breaking strength of fibers, and proper control could improve the uniformity of fibers, but other indexes had no significant influence. [Conclusion] According to the requirements of machine harvest to the agronomic traits of cotton and the growth characteristics of cotton plant, chemical control could begin after floral bud emergence in cotton about every 10 d, and the spraying amount can be controlled according to the growth amount of the main stem. The daily growth amount of plant height should be controlled at 1.5-1.8 cm, and the plant height should be within 75-90 cm.

The study on the beauty of Yulin Tea-picking

Yulin was belong to ＂Hundred Yue＂ in ancient time, the Zhuang and Yao nationality was the indigenous people here. After the Qin and Han Dynasties, the central plains people constantly migrating to the south not only brought the advanced agricultural technology, but also a lot of Hafts customs and folk music, including the ＂picking flower lanterns＂, ＂tea-picking drama＂ and other folk music cultures which combined with the local pristine ＂tea plucking＂ folk songs, and then the ＂tea plucking＂ music culture began to have its own unique artistic features. These characteristics contributed to highlight the beauty of Yulin tea plucking opera. This article mainly discusses Yulin tea-picking Drama＇s rich aesthetic connotation through elaborating its music, lyrics, the theme, dancing, and clothing etc.

The role of agricultural mechanization technology in the promotion of scientific and technological achievements in agriculture

Agricultural mechanization is to the use advanced and applicable agricultural machinery and equipment in agriculture to improve agricultural production conditions, and continuously improve the production technology and economic, ecological processes of agriculture. The level of agricultural science and technology depends largely on the degree of agricultural mechanization promotion. An agricultural country level depends on the degree of modern agricultural mechanization level of the application, and the era of mechanization in agriculture can not only save a lot of labor, reduce labor intensity, but also improve labor efficiency, and enhance resistance to natural disasters. The importance of agricultural mechanization technology in the scientific and technological achievements in agriculture is visible.

Visual Design Solving the Last Mile Problem of Agricultural Science and Technology Informatization

Agricultural science and technology is a collective name of the agricultural science information and agricultural technology information, which belongs to different activity fields, pursuing the use of nature and laws of things. In the process of transmission, it has a lot of data and pro^ams, thus, facing the audience groups of accepting different information ability, it often appears information transmission distort or misunderstanding. Information visualization design will represent a lot of agricultural science and technology information with complex structure and level, making use of the graphics relationship, by using the concise, easily browsing and searching method. How to make use of the information visualization design to solve the large capacity structure of agricultural science and technology information is the content that this paper analyzes.

Distributed Bio-Hydrogen Refueling Stations

Hydrogen fuel cell cars are now available for lease and for sale. Renewable hydrogen fuel can be produced from water via electrolysis, or from biomass via gasification. Electrolysis is power-hungry with high demand from solar or wind power. Gasification, however, can be energy self-sufficient using a recently-patented thermochemical conversion technology known as I-HPG （indirectly-heated pyrolytic gasification）. I-HPG produces a tar-free syngas from non-food woody biomass. This means the balance of plant can be small, so the overall system is economical at modest sizes. This makes it possible to produce renewable hydrogen from local agricultural residues; sufficient to create distributed refueling stations wherever there is feedstock. This work describes the specifics of a novel bio-hydrogen refueling station whereby the syngas produced has much of the hydrogen extracted with the remainder powering a generator to provide the electric power to the I-HPG system. Thus the system runs continuously. When paired with another new technology, moderate-pressure storage of hydrogen in porous silicon, there is the potential to also power the refueling operation. Such systems can be operated independently. It is even possible to design an energy self-sufficient farm where all electric power, heat, and hydrogen fuel is produced from the non-food residues of agricultural operations. No water is required, and the carbon footprint is negative, or at least neutral.

Application of Neutron Activation Analysis Technique for the Analysis of Soil Samples from Farmlands of Yebrage Hawariat, East Gojjam, Ethiopia

Farmers may not be conscious for their farmland＇s nutrients, soil organic matter, water and air because they simply concerned only for their labor availability and soil fertility losses. The composition and proportion of these components greatly influence soil physical properties, including texture, structure and porosity, the fraction of pore space in a soil. The soil of this farmland must be able to supply adequate amount of plant nutrients, in forms which can be absorbed by the crop, within its lifespan. Deficiencies or imbalances in the supply of any of essential elements can compromise growth, affecting root development, cell division, crop quality, crop yield and resistance to disease and drought. This study was conducted to fill this knowledge gap in order to develop economically vital and environmentally accepted nutrient management strategies for the use of soils in agricultural lands. The objective of this study is to assess the elemental contents and concentration of soil samples collected from farmlands of ＂Yebrage＂ using neutron activation analysis （NAA） techniques regardless of oxidation state, chemical form or physical locations. NAA is used to determine the elemental composition and concentrations present in a soil. The macro/micronutrient and organic matter deficiencies have been verified in agricultural soils through increased use of soil testing and plant analysis. The challenge for agriculture over the coming decades will meet the world＇s increasing demands for food in a sustainable way. Current issues and future challenges point out that as long as agriculture remains a soil based industry, major decreases in productivity likely to be attained ensuring that plants do not have adequate and balanced supply of nutrients.

Double-Cropping Pinto Bean after Winter Barley in Western Colorado USA

A double-cropping field study was conducted at the Colorado State University, Fruita. Colorado USA to evaluate an irrigated, double-cropping system of winter barley （Hordeum vulgare L.） followed by pinto bean （Phaseolus vutgaris L.） for the valley areas of western Colorado USA and other similar environments. Double-cropping pinto bean after winter barley was successful, but to use our double-cropping technology in commercial agriculture in adapted locations will likely require identifying or developing a winter barley cultivar that matures earlier than current cultivars but does not head and flower so early that it is susceptible to freeze damage. Double-cropping was more profitable in all three years than growing either pinto bean or winter barley as a sole crop.

China＇s Current income Distribution Status and Countermeasures Analysis

From two perspectives, - the proportion of residential income and the equality of residential income distribution - this paper identifies a widening gap in China＇s income distribution and considers that this is a result of different factors such as technological progress, increasing return on assets, the economic growth priority strategy of local governments, the increasing number of migrant workers who are in a weak position to negotiate wages, as well as the rapid process of industrialization. Based on the above analysis, this paper presents policy recommendations on how to improve the income distribution system.

Impacts of Coffee Production in Agroforestry System for Sustainable Development

This study estimates the environmental and socioeconomic impacts of coffee production in the agroforestry system in the settlements of farmers located in the West of the state of Silo Paulo, Brazil, in the region known as Pontal of Paranapanema, aiming at the development of programs to support the growth of production sustainable coffee and programs to protect the coffee activity before the possible global climate change. The settlements are located in areas with sandy soils and highly degraded by human action Moreover, the region is considered marginal for the production of coffee, because it is subject to periods of high temperatures, prolonged drought and frost risk, which hinders the sustainability of farms. The environmental and socioeconomic impacts of agroforestry are analyzed through Ambitec-agro system, consisting of a set of indicators aimed at ex-post evaluation of the contribution of technological innovation to environmental, social and economic development of an agricultural activity. The system Ambitec involves： （1） general data collection about the technology; （2） application of questionnaires with adopters selected and insertion of data on impact indicators spreadsheets via platform MS-Excel and to obtain quantitative results and impacts partial indexes and aggregates the impact of technology selected; （3） analysis and interpretation of indices obtained, which vary between -15 and 15. The results indicate that agroforestry management can contribute to： （1） maintaining or increasing the sustainability of traditional coffee-growing regions in the case of sudden climate change; （2） the expansion of the coffee regions now considered unsuitable for the cultivation of coffee; （3） for sustainable regional development.

Current Soil Nutrient Status of Intensively Managed Greenhouses

Nine districts covering the main greenhouse vegetable areas in Tianjin Municipality of the North China Plain were selected for the soil investigation in 2010 to survey the current soil nutrient status (soil available N, P and K), acidification and salinization due to excessive input of fertilizers in greenhouses in Tianjin. The study showed that, in particular, soil available P content increased with the age of greenhouses. In contrast, our results did not reveal higher K accumulation and lowered pH in the greenhouse soils compared with cultivation in open fields. Over-fertilization, causing high NO 3 accumulation, most likely resulted in salinity problems in the greenhouses. Ninety percent of the investigated greenhouse soils had electrical conductivity values of saturated paste extracts of 2-10 d S m-1 , which might affect the yields of vegetable crops like green bean, pepper, cabbage, carrot, eggplant, lettuce, spinach, celery, cucumber and tomato. The findings of our survey of the current fertility and salinity problems in greenhouse soils suggest that there is an urgent need to improve the farmers' practices and strategies in fertilization management in greenhouses of China. Because education and the agricultural technical extension services may play a more important role in avoiding overuse of fertilizers, we suggest that current nutrient management practices should be improved in the near future through training of local farmers in farmers' schools and through strengthening the agricultural extension services with practical techniques.