Method for improving uniformity of rice machine-transplanted population

Abstract

The invention provides a method for improving the uniformity of a rice machine-transplanted population, and belongs to the technical field of rice planting. The method for improving the uniformity ofthe rice machine-transplanted population comprises the steps of directional, quantitative and positioning sowing and machine-transplanted quantitative and positioning seedling taking. According to themethod, a sowing mode of directional, quantitative and positioning sowing is utilized, a corresponding machine-transplanted seedling taking mode is matched, the problems that the number of traditional machine-transplanted seedlings is not uniform, and the seedling leakage rate is high are solved, uniform machine transplanting is achieved, and the uniformity of the rice population is improved; andmeanwhile, the sowing amount under the target machine-transplanted seedling number and the cost of hybrid rice machine-transplanted seeds are reduced, the yield of hybrid rice is increased, and the yield and efficiency of hybrid rice production are increased.

Description

technical field [0001] The invention belongs to the technical field of rice planting, and in particular relates to a method for improving the uniformity of rice machine-transplanted populations. Background technique [0002] In the late 1970s, hybrid rice was successfully bred and commercialized in China. The area and yield of hybrid rice continued to increase, making a significant contribution to ensuring food security in my country and the world. At present, the planting area of ​​hybrid rice accounts for more than 50% of the rice area in my country, and plays an important role in rice production. With the development of social economy and the transfer of rural labor force to other industries, the labor force engaged in rice production has decreased and the cost has increased significantly, and rice production requires mechanized operations. The main constraint factor of rice production mechanization is machine transplanting, especially hybrid rice machine transplanting. ...

AI Technical Summary

Problems solved by technology

[0003] The existing machine-transplanted rice technology is applied to hybrid rice. The sowing amount is large, the quality of seedlings is poor, the rate of machine-transplanted seedlings is high, and the number of machine-transplanted seedlings is uneven, resulting in uneven populations of hybrid rice, and it is difficult to exert the potential of hybrid rice to increase production.

If the sowing amount is low and the matting performance is poor, it cannot be transplanted by machine, and the missing seedling rate is high, and seedlings need to be replenished

The price of hybrid rice seeds is high, the seeding rate of machine transplanting is high, the amount of seeds used is large, the cost of seeds is high, and the quality of seedlings is poor, which restricts the growth advantage of hybrid rice

For a long time, the problem of mechanical transplanting of hybrid rice has not been solved, which has become a technical bottleneck for the further promotion of hybrid rice

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