Lodging Affect Main Factors And Benefits Assessment Of Super Hybrid Semilate Rice In Jianghan Plain

Lodging is a common problem in rice production. Lodging not only greatly affects the rice yield, but also has a great impact on rice quality. At present, the super hybrid plant type structure is different from the conventional hybrid rice varieties lodging, lodging, main reason, influence factors of yield reduction has little research. Carry out research of super rice lodging properties for production practice to coordinate the relationship between high yield and lodging of this contradiction, so as to further increase the yield of rice and super rice yield potential has important theoretical and practical significance. The same time, by exploring different planting patterns under different density levels and under different fertilizer levels, the super hybrid rice of different level of lodging negative effective assessment, provide the basis for the assessment of the effectiveness of the production of rice cultivation and production guidance to solve the super rice lodging, and the rice farmers increase production, is of great significance. In this paper, for the study of super hybrid rice in the middle reaches of the Yangtze River Hanjiang Plain-tall stalk of super hybrid rice lodging characteristics and proven super hybrid rice lodging main impact factor based on research Lodging on different production elements impact characteristics, benefit evaluation period of super hybrid rice to provide a theoretical system, the production of super hybrid rice lodging offers practical guidance. The results show that:(1)The lodging difference on different super hybrid rice varieties:under the test conditions of the fields, the two super hybrid rice, super hybrid rice combination88S/1128and Zhunliangyou527,did not show obvious lodging law, but in the same fertility conditions, superthe rice combination88S/1128relatives to the Zhunliangyou527stronger lodging resistance, lodging a lower level. High nitrogen levels the under Zhunliangyou527sections bit the lodging index are close to or more than the threshold of the greater possibility of lodging. In nitrogen levels225kg/hm, two super rice output input ratio of2.2, showing a higher economic efficiency.(2) The impact of Different Nitrogen Levels on the Super Hybrid Rice lodging: survey low nitrogen level (N135kg/hm2) in nitrogen level (N225kg/hm2), high nitrogen levels (N315kg/hm2), three fertilization levels ona comparative study of two super hybrid rice yield growth and physiological characteristics. The result shows that different fertilizer levels between treatments within the scope of the study, two super rice basal bending trait differences significantly, the average yield by treatment was the highest in fat. (3) The impact of Different planting patterns of Super Hybrid Rice Lodging: super hybrid rice field lodging more sensitive Zhunliangyou527different cultivation methods lodging in level studies have shown that different cropping patterns, the same section of the super hybrid rice quasi-two excellent527a certain degree of variation between lodging resistance traits in general, but the difference was less obvious level. Basal node of the performance of the hands of rice and machine transplanted rice difference was not significant, but significant difference compared with direct seeding rice. The hands of the same species planted rice lodging resistance were the highest, machine inserted followed by rice, and seeding rice lodging resistance were the lowest. Planting hand planted rice to a large extent, to prevent lodging. The input-output ratio of the three cropping patterns have reached more than2.1, showing good economic returns.(4) Lodging impact of planting density on Super Hybrid Rice:The effect of low-density, medium density, high density three level of cultivation of super hybrid rice quasi-two excellent527the lodging traits and yield characteristics to compare. The results show that the strongest,14000plants per acre experimental conditions lodging resistance, yield and economic benefits of the highest-based test for the best planting density.