力富农防治苹果金纹细蛾试验

金纹细蛾是苹果叶部的一种重要害虫,近几年来在我市发生比较严重。由于连年使用灭幼脲系列农药控制危害,而导致了金纹细蛾对其产生了一定的抗性。为了筛选防治金纹细蛾的良药,特安排本试验。现将结果总结如下。

Migrant Workers Age-Group Productivity Gap Is Key to Verifying Lewis Turning Point in Chin＊

This paper uses age-related productivity gaps to analyze the Lewis turning point in China. The age-related productivity gap implies that under same wage rate, older and less productive rural laborers working in cities will earn less than the reservation wage. Thus, they may elect instead to return to the countryside. Therefore, this paper argues that while the supply of younger, high-productivity migrant workers fails demand and Lewis turning point emerges, there still exists a high volume of lower-productivity rural surplus labor.

Estimates of China’s Rural Surplus Labor and Its Structure from 2002 to 2010

This paper investigates the structural changes of China＇s rural surplus labor over time. According to our estimates, the number of agricultural surplus workers declined sharply by more than 90% between 2002 and 2010. During this period, explicit unemployment in rural areas increased by 70% to become the main form of surplus labor. Among rural surplus workers, the proportions of workers aged 40 and above, workers with primapy and lower education levels and female workers show a clear upward trend, reaching 72.3%, 48.11% and 56.99% respectively in 2010. These changes can explain the apparent paradox of concurrent surplus labor, rising wages and migrant worker shortage. These structural changes in the labor surplus makeup indicate that the Lewis Turning Point （L TP） has arrived.

The Impact of Rural Electricity Supplier on Resettlement of Rural Surplus Labor Force and the Route Optimization

Based on the perspective of electricity supplier on the issues of Rural Surplus Labor resettlement, we analyzed China＇s rural electricity supplier development and resettlement of rural surplus labor issues and factors, proposed the impact of sluggish development of rural electricity suppliers on their resettlement of the rural surplus labor force, and made the following suggestions： to develop township enterprises, to strengthen the construction of small towns, to settlement surplus labor force on the post, to transfer the surplus labor, to increase farmers＇ income; to eliminate the urban-rural dual structure, to implement loose household registration management system, to increase education level, to improve the quality of farmers, to provide information and improve guidance to change disorderly transfer to the orderly transfer.

China＇s Experience in Rural Poverty Reduction.Jobs from Industrialization and Urbanization to Increase Rural Household Income

This paper makes an appraisal of the successful experience of China, a country with the largest agricultural population in the world, in the reduction of rural poverty. We conclude that it is an indispensible strategy to give priority to the development of urban sectors to promote economic growth and reduce rural poverty, and that the development of low value-added agriculture yields few, if any, benefits in decreasing rural poverty. By first adopting urban-biased policies and promoting industrialization, China has created new sources of economic growth and urban employment opportunities to absorb the surplus rural workforce. Entering labor-intensive industrial sectors for higher incomes has thus become a critical avenue for the rural poor to benefit from economic growth and escape poverty.

Investigation of the problems about Left behind Children in the New Rural Construction —— Henan Province as the example

Henan province is the province that promotes the progress of industrialization and urbanization faster. Along with the flow of rural surplus labor, on the one hand, it formed the large group of migrant children in cities and towns; on the other hand, the ideological and moral problem of the ＂Left-behind children＂ grows increasingly. It not only concerns the happiness of family and the social harmony and stability, but also concerns the quality level of new rural population and labor force in the future.

Functional attributes： Compacting vs decompacting earth- worms and influence on soil structure

A short term field mesocosm experiment was performed in semi-deciduous forest areas of Ivory Coast to assess the impact of a decompacting （Hyperiodrilus africanus, Eudrilidae） and two compacting （Millsonia omodeoi and Dichogaster terrae nigrae, Acanthodrilidae） earthworm species on soil properties. These species have been selected for their predominance in the re- gion and their contrasting impact on soil structure. The experimental design consisted of a treatment without worms （control）, and treatments with one, two or three species of earthworms. Both compacting and decompacting earthworms increased water infil- tration rate in all treatments, with marked impact in H. africanus and M. omodeoi＋D, terraenigrae treatments. Interactions be- tween compacting and decompacting species resulted in more large aggregates in comparison to when the compacting species D. terraenigrae was alone. This may be accounted for by their compacting attribute as compacting earthworms are responsible for producing the highest number of large aggregates. The low values of mean weight diameter in treatments combining decompact-ing and compacting earthworms compared with compacting ＂M. omodeoi＂ one also confirmed the trend of decline in soil com-paction in the presence of the decompacting species. These results showed positive impact of species richness on soil structure regulation, which is crucial in ecosystem productivity and support consequently the insurance hypothesis. In fact, this study showed that the preservation of earthworm species belonging to these two contrasting functional groups is essential for the main-tenance of stable soil structure regulation in agro-tropical ecosystems.