This paper considers a typical mutual interference system of four-dimensionalspecies, its bounded, extermination stability are studied, and their necessary-sufficientcondition are given, and their ecology meaning set ...This paper considers a typical mutual interference system of four-dimensionalspecies, its bounded, extermination stability are studied, and their necessary-sufficientcondition are given, and their ecology meaning set forth.展开更多
Highland barley, one of the main food crops for Tibetan people, is an important food for Tibetan people for three meals a day.With the continuous improvement of the people's living standards in Tibet, the demand f...Highland barley, one of the main food crops for Tibetan people, is an important food for Tibetan people for three meals a day.With the continuous improvement of the people's living standards in Tibet, the demand for highland barley is also increasing. As an indispensable food crop, highland barley has been developed in Tibet for thousands of years. Based on the background of modern development, in order to focus on improving the production and quality of highland barley crops in Tibet, in the following article, specific analysis will be made on each planting details, hoping to provide some reference for relevant people.展开更多
In the economic development, agriculture is a pillar industry and an important foundation. With the continuous increase and renewal of varieties of agricultural products and the continuous development of agricultural ...In the economic development, agriculture is a pillar industry and an important foundation. With the continuous increase and renewal of varieties of agricultural products and the continuous development of agricultural planting technology, the agricultural development situation has changed significantly. In crop cultivation, the occurrence of plant diseases and insect pests greatly reduces the level of agricultural development. In order to realize the further development of agriculture, it is necessary to carry out in-depth analysis and research on crop planting technology and pest control technology.展开更多
文摘This paper considers a typical mutual interference system of four-dimensionalspecies, its bounded, extermination stability are studied, and their necessary-sufficientcondition are given, and their ecology meaning set forth.
文摘Highland barley, one of the main food crops for Tibetan people, is an important food for Tibetan people for three meals a day.With the continuous improvement of the people's living standards in Tibet, the demand for highland barley is also increasing. As an indispensable food crop, highland barley has been developed in Tibet for thousands of years. Based on the background of modern development, in order to focus on improving the production and quality of highland barley crops in Tibet, in the following article, specific analysis will be made on each planting details, hoping to provide some reference for relevant people.
文摘In the economic development, agriculture is a pillar industry and an important foundation. With the continuous increase and renewal of varieties of agricultural products and the continuous development of agricultural planting technology, the agricultural development situation has changed significantly. In crop cultivation, the occurrence of plant diseases and insect pests greatly reduces the level of agricultural development. In order to realize the further development of agriculture, it is necessary to carry out in-depth analysis and research on crop planting technology and pest control technology.
