The Study On The Changes Of Crop Planting Structure In Modern Hebei

Under the background of great changes in economic environment,the crop planting structure in modern hebei changed.Firstly,the spatial distribution of food crops and cash crops expanded to some extent compared with that of Ming and qing dynasties.Secondly,although the grain-based planting structure has not been greatly improved,the planting area and yield of some specific crops still show different changes in the large planting structure.The main categories can be divided into three categories: one is food crops such as wheat and sorghum,the former due to the high value,in the modern planting area increased,the position in the structure of crop planting is still stable.The latter,Due to the poor quality of the latter,with the development of social economy and the improvement of farmers’ living standards,its weight in the main food crops is declining.At the same time,due to the increase of wheat and American crop planting area,the planting proportion and status of cereal in food crops are declining.The second is the American food crops corn and sweet potato.Because of their high yield and high edible value,they spread rapidly in Hebei Province in modern times,and their planting area and yield increased significantly,so corn began to rank in the main food ranks.The third category is economic crops.With the expansion of market demand for industrial raw materials,some economic crops with high economic benefits,such as cotton,peanut,soybean and other planting areas,have increased rapidly.The basic characteristics of the change of crop planting structure in modern hebei are that the crop planting structure is still dominated by grain crops,the development of technology and horticultural crop production supplants grain production,and the commercialization degree of agricultural products has been improved.The change of crop planting structure is the result of a variety of factors,among which the opening of tianjin port,the government’s policy support and farmers’ choice,the development of modern transportation industry,modern handicraft industry and industrial demand for agricultural raw materials are all important factors to promote the change of crop planting structure in modern hebei.