Shelling is an essential part of walnut postharvest processing and plays an important role in the development of walnut industry in China. At present, in most areas of China, walnut harvesting was mainly based on primary processing, timeconsuming and laborious, with low mechanization degree, and the problems of low kernel exposure rate and high breakage rate in the shelling link and so on, which had become a key problem affecting the rapid development of walnut industry. Based on the analysis of 6 typical walnut shelling equipments structure, shelling principle, advantages or disadvantages, and so on, this paper expounded the development situation of walnut shelling equipment at home and abroad at present. This paper summed up the problems of walnut shelling equipment in China and it included single function, high operation cost, performance instability, low efficiency, poor universality, low utilization rate and so on. Finally this paper put forward to some relative measures and suggestions of our country in future. We should optimize and improve the key technology and structure, strengthen the application research of new technology, new theory and new method of walnut shelling and develop large walnut shelling equipment, promote the processing capacity of enterprises.

Grain production in Jiangsu Province was dominated by rice-wheat rotation, and stubble connection was especially tight, so the requirements of mechanized sowing equipment for wheat after rice were also increasing. Based on the introduction of the seeding methods of wheat after rice in Jiangsu Province, this paper described the general situation of five types of wheat after rice mechanized seeding technology in Jiangsu Province. There were some existing problems in mechanized sowing of wheat after rice in Jiangsu, such as large amount of full straw returning to the field, high cost of comprehensive utilization after removing the straw from the field, difficulty in sowing wheat in wet and bad fields, high production cost of mechanized sowing, and difficulty in subsidizing new products. Measures and suggestions were put forward, such as strengthening the integration of agricultural machinery and agronomy according to local conditions, vigorously promoting land circulation, moderately developing large-scale and intensive management, and accelerating the research and development of new mechanized sowing machines and tools for wheat after rice in Jiang.