新型农药中毒诊断抢救要点(一)

由于农村出现了家家买农药、户户储农药的新情况,加之近年来又引进和发展了一些新型农药,给基层医务人员抢救农药中毒带来了一定困难,为此我根据有关资料编写了新型农药中毒诊断抢救要点,以供基层读者参考。

成立植保专业队伍治虫防毒初见成效

概况 江苏省盐城市阜宁县吴滩乡有48个行政村,331个组,人口6万余,耕地面积7.4万亩,其中:水稻田6.6万亩,棉田0.8万亩,常年使用各类农药10吨左右,是我市主要产粮乡之一。自1978年农村实行联产承包制以来,农业治虫工作从原来以队为基础随之转为家、户分散进行,从而,农村中呈现了“家家有药械、户户储农药”的局面。

IMPROVEMENT OF SANDY SOIL WITH WATER-CONSERVING MEMBRANE AND ITS EFFECT ON CROP GROWTH

Water-conserving membrane is a new material of improving sandy soil. It is based on the rule that a compound with organic and inorganic components can produce colloid after its integrating with Ca2+ in soil. The water-conserving membrane will obstruct capillary and increase viscidity of sandy soil, so as to decrease leakage and evaporation in sandy soil. The water-conserving membrane contains polyacrylic acid (PAA) and bentonite. When PAA concentration and pH of solution are different, water-conserving membrane can be made in different depth of soil. This experiment shows that the solution with 0.2% PAA does not harm and poison the crops, on the contrary, promotes crop germination. The solution with 0.2% or 0.4% PAA can accelerate corn growth. Accordingly, different crops need the application of the different PAA concentrations in the cultivation. Therefore, on the basis of different vadose coefficient in sandy soil, the solution with different PAA concentration can improve sandy soil and increase its water-conserving competence very well. The solution can be used to improve sandy soil and control desert enlargement in arid, semi-arid and semi-humid areas.

The Current Situation and Development of Grain Storage Technologies and Facilities for Chinese Farmers

In China, the quantity of farmer＇s grain storage covers about 40% of the total grain yield every year. While, the losses of farms＇ grain storage are up to 8%, which is due to the lack of grain storage facility and technology. The losses of farmer＇s grain storage could reach nearly 20 million tons every year. In this paper, the current situation and development of grain storage technology and facility for Chinese farmers were presented. And a series of policy and research work for reducing the losses of farms＇ grain storage was introduced. The large scale farmers are now developing quickly in China, the new storage warehouse and mechanized facility should be developed adaptively. So, the new storage technology and policy to meet the need of large scale farmers were also introduced in this paper.

Assessment of Grain Damage and Weight Loss on Farm Stored Maize in Highlands Areas of Bungoma District, Kenya

A simulation trial to assess losses in crib and in-house maize storage practices was conducted. Three cribs were constructed and 180 kg maize in two bags treated with 1.6% pirimiphos methyl and 0.3% permethrin stored in one. In the other, a similar quantity of untreated maize in two bags was stored while in the third crib, 4 bags of cob maize were placed. Another four bags, two treated and two untreated were placed on dunnage separated by a 2-meter path in the living house. Samples were analysed at 4-week interval for 24 weeks and pest damage was used to calculate percent weight loss. Grain from selected farmers was also analysed for comparison. Crib trial had 53% and 20% pest damage in untreated and treated maize compared with 56% and 16% for in-house storage after six months. Cumulative weight loss averaged 20.6% and 9.7% for untreated and treated maize. The figures are markedly higher than 5% criterion for effective pest control measures. Weight loss on farmer stocks compared well with untreated maize and grain damage varied from 5.4% to 27%, translating to 0.5% and 16.8% cumulative loss. These results suggest ineffective pest control measures by Bungoma farmers. The results contrast with Kitui ones in an earlier study where Prostephanus truncatus is endemic and contributed to 10% cumulative loss above the Bungoma level. Efforts should be made to reduce grain damage to below 5% to realise food security at farm level.

Assessing the Effect of Farmers＇ Supplementation Strategy on Feed Intake and Liveweight of Goats Grazing Natural Range and Crop Fields of Zamfara Reserve in Semi-Arid Nigeria

This on-farm study was conducted in Zamfara reserve of north western Nigeria between July, 2002 and June, 2003 to assess feed intake and liveweight of 12 indigenous Red Sokoto castrated bucks, separated into two groups of six, supplemented and nonsupplemented respectively. The nonsupplemented group grazed natural pasture and crop stubble of crop fields, whereas the supplemented group grazed natural pasture, crop stubbles and received concentrate supplementation. Concentrate supplement （wheat offal） was fed at 1% of the metabolic weight of the animals which corresponds to the mean of the farmers offer. The total faecal collection method and grab samples of feed were used to estimate total intake of dry matter （DM）, organic matter （OM）, crude protein （CP） and metabolizable energy （ME）. Liveweight of the animal was recorded at five weekly intervals. Results of the study indicated that nutrients intake of supplemented animals were generally higher than those of the nonsupplemented group, but not significantly different （P 〉 0.05）. However, it was observed that supplementation significantly （P 〈 0.05） affected the liveweight of the supplemented bucks during early dry season in December, During this period feed became more available to the grazing animals from crop residues. It was therefore concluded that supplementation with wheat offal at 1% metabolic weight may not be enough to counteract weight loss of grazing goats during the other periods of dry season in this environment.

Access to Healthy Food Stores for Residents of Aboriginal Reserves in Rural British Columbia

The rate of food insecurity has increased tremendously over the past decade in Canada. This increase has been more pronounced in rural and remote areas especially among Aboriginal peoples. Substantial studies indicated that nearly half of the on-reserve Aboriginal households in British Columbia （BC） suffer from some degree of food insecurity. Despite the valuable research about obtaining traditional food, the issue of access to market food has been less discussed in the literature. The aim of this study was to assess the local food environment of on-reserve Aboriginal peoples by using a proximity-based approach tool in terms of access to healthy food stores such as supermarket and grocery stores. In the first stage, the addresses of all healthy food stores were geocoded into a map layer. Then the locations of Aboriginal reserves were geocoded to a separate map layer. In the second stage, using ＂Closest Facility Analysis＂ tool in ArcGIS Version 10.3, the distance based on a 15-minute driving time was measured from each reserve to the closest healthy food destination on CanMapRouteLogistics network. The results indicated that 25% of Aboriginal reserves did not have reasonable access to healthy food stores. We concluded that Aboriginal peoples in low access rural reserves with lower socioeconomic status are at potential risk of perpetuate food insecurity.

Microfinance Structure of Thailand

This paper was devoted to analyzing the structure of microfinance in Thailand. The theory of industrial organization （IO） was applied as a guideline to measure the degree of monopoly power in microfinance structure. The objective-of the study was investigation on Thai microfinance institution marketing structure by using Concentration Ratio （CR） and Herfindahl Hirschman Index （HHI）. The data of the study focus on the outstanding loans market share of microfinance institutions （MFIs）. The market share of the outstanding loans of MFIs from the largest to the smallest is as follows： Bank for Agriculture and Agricultural Cooperatives （BAAC）, Village Fund Cooperatives, Government Saving Bank （GSB）, Pawnshop, Self Help group： Saving Group, Commercial Bank, Self Help Group： Sudja Group and Isalamic Bank （IB）, respectively. It stated that CR by outstanding loans is as follows： Cr 1, 59.35%; Cr 3, 81.11%; Cr 6, 92.14%; and Cr 9, 94.37%. At the same time HHI is 0.38. Additionally, BAAC remains the majority MFIs even though there are the other MFIs available in the microfinance system. The main role of providing the microfinance services mostly derived from BAAC.

Coffee Agroforestry with Some Timber Shade Trees： Study on Carbon Stock, Mineral Cycle, and Yield

Coffee cultivation by using shade trees is simple of agroforestry, this system could get better ecosystem service and sustainable agricultural. The aims of this research are to study the possibility of some species of industrial woods as shade trees of Coffea canephora. The research was conducted in Jember, Indonesia （45 m asl., D rainfall type according to Schmidt and Ferguson）, and arranged in split plot design. The main plots were （A） coffee-T, grandis （3 m × 2.5 m ×12 m）, （B） coffee-P, falcataria single row （2.5 m ×6 m）, （C） coffee-P, falcataria double rows （3 m× 2.5 m × 12 m）, （D） coffee-P, falcataria vat. Solomon （3 m× 2.5 m × 12 m）, （E） coffee-M, azedarach （3 m ×5 m ×22.5 m）, （F） coffee-H, macrophyllus （3 m ×5 m ×12.5 m）, and （G） coffee-Leucaena sp. （3 m × 2.5 m） as control. The sub plots were coffee clones, i.e., BP 534, BP 409, BP 936, dan BP 939. Among those timber trees, Leucaena was planted as the alternative shade trees. The result showed that in comparison with control, all of coffee agroforestry system improved carbon sequestration. Total C-stock on （B） was highest, i.e., 1,007 percent to control while the lowest one was （A） 317.44% to control. During one year observation, litter weight of H. macrophyllus was heaviest followed by T. grandis. The lightest litter was obtained from M. azedarach. Based on its mineral contents, litters of T. grandis potentially supplied back nutrients that equaled to total Urea, SP-36, KC1, Dolomite, and Kieserite as much as 574.14 g; P. falcataria 287.57 g, P. falcataria var. Solomon 453.59 g, M. azedarach 450.84 g, H. macrophyllus 877.56 g, and Leucaena 445.12 g per tree per year. Because of heavily fallen leaves of M. azedarach during dry season and conversely too dense shading of H. macrophyllus, bean yield at 4 and 5 years old by using both species were consistently lower than that under T. grandis, P. falcataria and control. At those ages, effect of clone on cherry yield was still not consistent but there was a tendency that BP 939 was most productive, while BP 534 was the less. Its outturn was not influenced by agroforestry system but by clones. The agroforestry pattern influence physical bean characters, more dense of shading, more single bean and empty bean. That bean abnormality also genetically, on BP 939 percentage of round and empty bean was highest while on BP 936 was lowest. It was concluded that coffee agroforestry improve ecology service, but M. azedarach and H. macrophyllus were not appropriate to be used as coffee shade trees. P. falcataria is recommended as an alternative shade tree beside Leucaena sp.

The Effect of Land Use on Soil Organic Carbon Stocks in Lake Victoria Crescent Agro-Ecological Zone, Uganda

The effect of land use on soil organic carbon （SOC） stocks and depth distribution of SOC was investigated in the Lake Victoria Crescent ago-ecological zone of Uganda. Soil samples were collected from six land use types at 0-30, 30-60 and 60-90 cm from profile pits dug in similar soils and slopes. Results indicated that SOC stocks significantly differed across the various land use systems. SOC also varied significantly by depth. The highest SOC and pH were recorded under natural forest-strict nature. Grassland had the lowest SOC but the highest bulk density （BD）. Phosphorous （P） was the highest in banana-coffee systems and the lowest under tea plantations. The lowest values of pH and BD were found in highly disturbed natural forest. The upper layers of the soil （0-30 cm） stored higher amounts of SOC compared to other depths （30-60 cm and 60-90 cm）. Land use therefore has a significant effect on SOC and other soil physical and chemical properties.

全球大博览

太阳能轮船第一艘由太阳能和风能驱动的轮船已在悉尼港下水,开始了它的摆渡生涯。这艘轮船能载客100人,仅靠太阳能和风能它的速度可达15节。