TAILIEUCHUNG - Dissertation abstracts: Study on improving the cropping systems on some main soil types in Dong Hy District Thai Nguyen Province

Research objectives: Researching for improved cropping systems with proposed cropping structure on rice-based land in Dong Hy District, Thai Nguyen Province in the period of 2010 -2020; researching and applying some cultivation techniques for the tea production on hilly land in Dong Hy District, Thai Nguyen Province. | 1 PART 1 INTRODUCTION 1. Background Dong Hy is a mountainous district of Thai Nguyen Province with total natural area of 46 177 ha in which there are 26 of agricultural land 45 of forest land of aquaculture 5 of land for specific purposes 2 of living land 22 of unused land. The structure of agricultural land includes 53 for annual crops 39 for perennial crops and 8 for others. The annual crops include cereal crop group short-term industrial plant group group of vegetables and beans. The perennial crops include tea litchi longan mango jackfruit plants etc. With the land crop structure as well as the natural - economic and social conditions of Dong Hy District as mentioned above to gradually change the cropping system forward to market oriented production and to develop the sustainable agriculture system definitely needs research on improving cropping systems in Dong Hy District. Based on these issues we conducted a study titled Study on improving the cropping systems on some main soil types in Dong Hy District -Thai Nguyen Province. 2. Research objectives - Researching for improved cropping systems with proposed cropping structure on rice-based land in Dong Hy District Thai Nguyen Province in the period of 2010 -2020. - Researching and applying some cultivation techniques for the tea production on hilly land in Dong Hy District Thai Nguyen Province. 3. Research requirements - Evaluating the current cropping systems on rice-based and hilly land in Dong Hy District. - Studying to select the suitable varieties of crops in the spring summer and winter crops on rice-based land. Studying on some suitable techniques for tea production on hilly land. - Building demonstration plots on rice-based and hilly land based on research results obtained. - Proposing development plans for new cropping systems in Dong Hy District in the future. 2 4. Research limit The study focuses on analyzing and evaluating the status of crop production on some main kinds of agriculture land in

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