中国农业科学Issue(7)：1273-1289,17.
中国水稻种植机械化高产农艺研究现状及发展探讨
Research Status and Development Discussion on High-Yielding Agronomy of Mechanized Planting Rice in China
摘要
Abstract
Rice planting mechanization is a difficult point of the whole-course mechanized development in crop production in China. Based on the reviewing of development situation of rice planting mechanization in China, the high-yielding rules and cultivation techniques of three mechanized planting methods were highlighted and illustrated. (1) Growth characteristics and high-yielding rules of blanket-seedling mechanical transplanting rice grown in floppy disks were generalized systematically. Firstly, population photosynthesis and matter production at the middle and later period were improved by developing appropriate dynamics of stems and tillers and LAI. Secondly, it was the emphasis to increase the effective and efficient biomass accumulation in the middle period, and matter production after heading and the final biological yield. Thirdly, the sufficient population spikelets were composed of enough panicles and larger spike harmoniously, with normal seed-setting rate and 1000-grain weight at the same time. Moreover, the supporting cultivation techniques for high yield were as follows. ① Nursing standardized seedlings for providing biological basis of building starting point of high-yielding population. ② Precise mechanical planting was conducive to the formation of high-yielding population. ③ Promoting tillers growth earlier in the early period could make sure of suitable stems and tillers for high yield slightly before the critical leaf-age for productive tillers. ④ Field draining earlier and lighter, with an appropriate number of peak seedling (1.4-1.5 folds of expected panicle number), could create conditions for reapplying fertilizer of strong stalk and spikelet promotion as early as possible. ⑤ Committed to optimize the growth in the middle period and increase the effective and efficient biomass accumulation, a right amount of population stems and tillers with strong stalk and large panicle was beneficial to constitute a high-efficiency photosynthetic layer. ⑥ Strengthening material production and accumulation for increasing the enrichment of population sink. (2) Many advantages of the high-yielding cultivation of pot-seedling mechanical transplanting rice were also introduced systematically, such as nursing elder seedlings with soil bowl, almost no damage to machine-transplanting precisely, achieving designed basic seedling of high-yielding cultivation accurately, forming an appropriate number of population stems and tillers with strong stalk and large panicle, improving ventilation and light conditions of population, strengthening the resistance to lodging, coordinating source-sink, strengthening strong photosynthetic production in the middle and later periods, making full use of temperature and solar radiation, creating (super) high yield stably and annual yield in the multiple cropping rotation systems, etc. And the key agronomic techniques for high-yielding cultivation of pot-seedling mechanical transplanting rice were as below. ① Nursing age-lengthening seedlings precisely; ② Precise quantitative mechanical planting; ③ Reapplying tillering fertilizer and spikelet-promoting fertilizer appropriately. (3) Characteristics of growth and yield formation of mechanical drilling rice were reviewed, presented with its supporting techniques including determined planting areas reasonably, selecting large-panicle varieties with appropriate growth duration and strong lodging, mechanical sowing earlier and extremely, chemical weed control and fertilizer management. Simultaneously, the existed main problems in the process of rice planting mechanization in China were analyzed further. According to China’s national conditions, the cultivation model raising nurturing standardized seedlings professionally and mechanical transplanting precisely as well as stable high-yielding-high-efficiency agronomic techniques should be the basic direction of mechanized cultivation for the majority of the localities. And mechanical seeding could be applied in several areas with abundant heat of rice season. Then the corresponding research and development (R&D) focuses for mechanized planting of rice were referred.① High-yielding cultivation of blanket-seedling mechanical transplanting rice should be classified as the main direction of mechanization in the major rice producing areas so as to R&D further. There were several focal points such as enhanced flexibility of blanket-seedling age and seedling quality, straw machine-returning and land preparation and seedling planting precisely, promoting earlier and stably in the field, cultivating a right amount of population stems and tillers with strong stalk and large panicle and increasing population sink. ② Reducing equipment costs, improving operating efficiency and building stable (super) high-yielding-high-efficiency agronomy techniques were the research priorities of pot-seedling mechanical transplanting rice. ③However, for the mechanical drilling rice, attention should be focused on improving the quality of previous straw machine-returning and land preparation through efficient mechanical operations, and mechanical precise direct seeding and early germinating for achieving expected seedlings. Finally, the technology integration and demonstration of the whole-process mechanized models under the local main mechanized cultivation methods should be done well in accordance with their characteristics in each main region of rice.关键词
水稻/种植机械化/高产规律/栽培农艺/发展方向Key words
rice/planting mechanization/high-yielding rules/cultivation agronomy/development direction引用本文复制引用
张洪程,龚金龙..中国水稻种植机械化高产农艺研究现状及发展探讨[J].中国农业科学,2014,(7):1273-1289,17.基金项目
国家粮食丰产科技工程资助项目（2011BAD16B03）、农业部超级稻专项（02318802013231）、江苏省科技支撑项目（BE2012301）、江苏省农业科技自主创新项目（CX（12）1003-9）、农业部公益性行业（农业）科研专项 （）
