Population Development Characteristics And Economic Benefits Of Rice Under Different Mechanized Planting Patterns

This study takes Huanghai branch of Jiangsu agricultural reclamation in Yancheng City of Jiangsu Province as an example,compare three kinds of mechanized planting patterns,pot seedling of mechanical transplanting rice,carpet seedling of mechanical transplanting rice and direct seeding rice,analyzed the differences in growth and development,yield formation,population production and economic benefits of rice under different mechanized planting patterns,thus on the basis of analyzing the advantages and disadvantages of different mechanized planting patterns,explore a more suitable mechanized planting patterns for large-scale rice production under certain conditions.The results of this study will provide necessary reference and practical examples for the benefit promotion and sustainable development of large-scale rice production.1.Pot seedling of mechanical transplanting rice has the highest yield,followed by carpet seedling of mechanical transplanting rice,and the direct seeding rice is lowest.Analysis of rice production factors,the spike number showed direct seeding rice>carpet seedling of mechanical transplanting rice>pot seedling of mechanical transplanting rice.The number of grains per spike showed pot seedling of mechanical transplanting rice>carpet seedling of mechanical transplanting rice>direct seeding rice.There was no significant difference in 1000 grain weight and seed setting rate among the three mechanized planting patterns.The results showed that the yield structure of pot seedling of mechanical transplanting rice was relatively coordinated,and it was easy to obtain high yield.2.Pot seedling of mechanical transplanting rice has the longest total growth period,followed by carpet seedling of mechanical transplanting rice,and the shortest is direct seeding rice.Pot seedling of mechanical transplanting rice’s reproductive process is earlier than carpet seedling of mechanical transplanting rice and direct seeding rice,and carpet seedling of mechanical transplanting rice is earlier than direct seeding rice.Compared with direct seeding rice,transplanting rice prolonged the days from sowing to jointing stage by 9-16 days and from heading to maturity by 3-6 days;Prolongation of growth period made transplanting rice have longer photosynthetic time and increased the accumulation of photosynthetic matter in rice.3.Pot seedling of mechanical transplanting rice had the lowest number of effect panicle,but the growth of tillers was stable,and the ears per plant and percentage of productive tiller of pot seedling of mechanical transplanting rice were significantly higher than carpet seedling of mechanical transplanting rice and direct seeding rice,which were 61.75%and 11.13%higher than carpet seedling of mechanical transplanting rice and 77.27%and 11.79%higher than direct seeding rice.Population development of pot seedling of mechanical transplanting rice is more reasonable than carpet seedling of mechanical transplanting rice,and the direct seeding rice,and it’s beneficial to the individual development of rice.4.The total dry matter accumulation of different mechanized rice planting patterns showed pot seedling of mechanical transplanting rice>carpet seedling of mechanical transplanting rice>direct seeding rice.The dry matter accumulation of rice from jointing to heading and from heading to maturity accounted for about 80%of the total growth period.After jointing stage,pot seedling of mechanical transplanting rice had higher leaf area index and total dry matter accumulation,so it showed higher number of grains per spike,1000 grain weight and seed setting rate5.Direct seeding rice has the lowest Cost input and the highest mechanical efficiency,output benefit is lower than pot seedling of mechanical transplanting rice and higher than carpet seedling of mechanical transplanting rice.Cost input,output benefit and mechanical efficiency of different mechanized rice planting patterns were as follows:Cost input was carpet seedling of mechanical transplanting rice>pot seedling of mechanical transplanting rice>direct seeding rice,output benefit was pot seedling of mechanical transplanting rice>direct seeding rice>carpet seedling of mechanical transplanting rice,mechanical efficiency was direct seeding rice>carpet seedling of mechanical transplanting rice>pot seedling of mechanical transplanting rice.