A total of 106 two month-old Nanjiang yellow goats (male were 32, female were 34 and castrated were 40) were divided into treatment group and control group to determine the growth performance. The treatment group was reared in grazing mode, experimental group was pastured with supplement feeding. The results showed that the body weight of male in experiment group was heavier by 9.82%(P＜0.05), 11.87%(P＜0.01), 16.91%(P＜0.01) and 23.99%(P＜0.05) than that in control group in 3,4,5 and 6 month-age. The body weight of female in experimental group was heavier by 11.54%(P＜0.05), 13.79%(P＜0.01), 17.47%(P＜0.01) and 21.15%(P＜0.01) than that in control group in 3,4,5 and 6 month-old. The body weight of castrator in experimental group was heavier by 1.58%, 1.99%, 13.08%(P＜0.01) and 15.76%(P＜0.01) than that in control group in 3,4,5 and 6 month-age. The daily increasing weight and body measurements of experimental group is improved more than control group, especially in 6 month-age.

Lanthanum oxide was introduced to molybdenum powder by liquid-liquid doping and liquid-solid doping respectively. Mo alloys were prepared by powder metallurgy technology. The size distribution and feature of dopant particles and the fractographs of Mo alloys were investigated by TEM and SEM respectively. The results indicated that liquid-liquid doping method is favorable for refining and dispersing particles uniformly in matrix. Fracture toughness of Mo alloys prepared by liquid-liquid doping showed better results than that of liquid-solid doping. Furthermore, the influences of the size distribution of on properties of Mo alloys was discussed by dislocation pile-up theory.

In this paper, the fundamental attributes, phase composition of three pre-alloyed powders for diamond tools by water atomization were investigated. The density, hardness, bend strength and bending modulus of their hot pressing samples were examined. The results showed that the three pre-alloyed powders have excellent low temperature sintering characteristics. The physical and mechanical properties of the samples were found to be nearly the same as those of fine cobalt powders.

Vacuum carbonization of nanometer tungsten powder was investigated in a simple designed apparatus. An X-Y recorder was used to plot differential thermal analysis (DTA) curves to determine starting temperature of carbonization of four samples with different specific surface area. The product was detected by X-ray Diffraction (XRD) and small angle X-ray scattering (SAXS). The results show that finer tungsten powder has lower starting temperature of carbonization. Tungsten powder, which BET surface area is , is completely carbonized to tungsten carbide at , although the starting temperature is . Particle grows sharply before carbonization.

Gannan navel orange is the characteristic brand of Jiangxi agricultural products and the national geographical indication product of China. Gannan navel orange has large yield, wide planting area, high brand value and large export volume.”Belt and Road” is an economic innovation and economic change made by China for the country and the world under the current weak economic environment. Under the new economic development, Gannan navel orange, as an important agricultural product, should actively connect with the “Belt and Road” development strategy, develop its own advantages, and take advantage of this opportunity to further develop the navel orange brand. Gannan navel orange needs to play an advantage to meet the challenge under the new economic environment such as “Belt and Road ”. This paper mainly analyzes the export and future development of Gannan navel orange under the new economic environment. The export volume of Gannan navel orange under the background of Belt and Road is suggested.

With the enhancement of people’s awareness of green consumption, green barriers have played a more and more important role in Global trade and become an important trick for countries to implement trade protection. In the aspect of China’s textile export to the United States, the United States has set strict environmental standards through green barriers to restrict China’s textiles and their products from entering the domestic market, which has caused many obstacles to the development of China’s textile trade. Firstly, this paper introduces the definition, characteristics, forms and mechanism of green trade barriers in detail to form an overall personal cognition. Secondly, it analyzes the current situation of China US textile trade by using the data of China US textile trade in recent years. Then, using the SWOT theory analysis method, this paper studies the opportunities and challenges, advantages and disadvantages faced by China’s textile industry exports at home and abroad under the green trade barriers, and puts forward countermeasures to overcome the green barriers from the perspectives of the government and textile enterprises, hoping that China’s textile industry will change into a green industry and take the road of green sustainable development.

China now has about 69% advantage of the rice yield as compared with the global average. The planting area was 30 million ha and total yield was 180 million ton in China in every year. Now, the breeding strategy of hybrid rice includes the improving ratio of plant morphological and raising heterosis level and using tools of the molecular biology. Some research was fixed on main index of plant type of hybrid Rice, which had the tall erect-leaf canopy and lower panicle position and bigger panicle size. Methods of raising heterosis level were expressed including exploitation and utilization of various male sterility resources, development of male sterile lines with high grain quality and out-crossing capacity, using wide-compatibility (WC) gene to overcome seed-set problem.