This study aimed to gain more high-quality rice with less water and im- prove the level of national food security. Based on the optimized planting density of rice with drip irrigation, direct sowing technology for pla...This study aimed to gain more high-quality rice with less water and im- prove the level of national food security. Based on the optimized planting density of rice with drip irrigation, direct sowing technology for plastic-film-covered rice cultiva- tion with drip irrigation was proposed. Furthermore, sowing planter for plastic-film- covered drip-irrigation rice cultivation was developed in accordance with the require- ments for the combination of agricultural technique and agricultural machinery. Ac- cording to the large-scale field production evaluation, the film-punching direct-sowing technology for dry cultivation of rice can greatly reduce the labor consumption and results in neat emergence of seedlings. Productive practice shows that using the developed sowing planter for plastic-film-covered rice cultivation with drip irrigation leads to vacancy rate ≤3%, pass rate of grain number ≥85%, soil-covering rate ≥ 95%, and hole number per acre of 31 000-33 000. In addition, the sowing planter can adapt to the agronomic technical requirements for high-density cultivation of rice and provide technical support for the rice production in arid regions of China. Key words Fargesia murielae; Nutrition mechanism; Age grade; Nutrient distribution展开更多
文摘This study aimed to gain more high-quality rice with less water and im- prove the level of national food security. Based on the optimized planting density of rice with drip irrigation, direct sowing technology for plastic-film-covered rice cultiva- tion with drip irrigation was proposed. Furthermore, sowing planter for plastic-film- covered drip-irrigation rice cultivation was developed in accordance with the require- ments for the combination of agricultural technique and agricultural machinery. Ac- cording to the large-scale field production evaluation, the film-punching direct-sowing technology for dry cultivation of rice can greatly reduce the labor consumption and results in neat emergence of seedlings. Productive practice shows that using the developed sowing planter for plastic-film-covered rice cultivation with drip irrigation leads to vacancy rate ≤3%, pass rate of grain number ≥85%, soil-covering rate ≥ 95%, and hole number per acre of 31 000-33 000. In addition, the sowing planter can adapt to the agronomic technical requirements for high-density cultivation of rice and provide technical support for the rice production in arid regions of China. Key words Fargesia murielae; Nutrition mechanism; Age grade; Nutrient distribution
