Method for growing large-potted blanket-form seedlings of machine-transplanted early rice

Abstract

The invention discloses a method for growing large-potted blanket-form seedlings of machine-transplanted early rice. The method comprises selecting a paddy field, making seedling beds, accelerating germination of seeds, sowing the seeds, carrying out treatment in the dark, providing seedling stage management, lifting and transferring seedlings, transplanting to the paddy field and carrying out other steps. The method of the invention has the advantages that the advantages of traditional blanket-form machine transplanting and those of traditional seedling throwing are combined, precision seeding is performed with seedling growth nutrient soil and an auto-seeding line, robust seedlings suitable for machine transplanting are cultivated after warm water acceleration of germination and treatment in the dark, large-potted blanket-form cultivation of long-age seedlings is achieved, and the seedlings have good quality and high age flexibility; seedling growth via the method helps shorten the time of germination acceleration for growing early rice seedlings by 48-72 hours and shorten the reviving period, the grown seedlings have great ability to grow roots, no evident reviving period or development period delay occurs after machine transplanting, time can be saved for rush-planting and rush-harvesting, and rice yield can be increased.

Description

technical field [0001] The invention relates to the technical field of machine-transplanted early rice seedling raising methods, in particular to a machine-transplanted early rice blanket-shaped seedling raising method in a large bowl. Background technique [0002] The southern double-cropping rice area is the main rice-producing area in my country. The bottleneck in the development of double-cropping rice lies in early rice, and the key to early rice production is seedling cultivation. During the early rice seedling raising period, the average temperature is low, the effective accumulated temperature is small, the sunshine is short, the irrigation water temperature is low, and it is easy to be harmed by low temperature, which will lead to a decrease in seed germination rate, and the growth of seedlings will be inhibited. Problems such as rotten seedlings, when serious, a large number of dead seedlings will delay timely transplanting. At present, there are many rice seedling...

AI Technical Summary

Problems solved by technology

During the early rice seedling raising period, the average temperature is low, the effective accumulated temperature is small, the sunshine is short, the irrigation water temperature is low, and it is easy to be harmed by low temperature, which will lead to a decrease in seed germination rate, and the growth of seedlings will be inhibited. Problems such as rotten seedlings, when serious, a large number of dead seedlings will delay timely transplanting. At present, there are many rice seedling raising methods, and seedlings that meet the requirements of machine transplanting can be cultivated. However, the existing early rice seedling raising method takes a relatively long time to raise seedlings, and the quality of seedlings is balanced. Poor performance, it is difficult to meet the requirements of large-scale rice planting and strong seedlings

At the same time, the season suitable for the growth of early rice is short, and the contradiction between the seasonal shortage of light and temperature resources is prominent. After the early rice is planted, there will be a greening period of 7-10 days, which will prolong the growth period of early rice and easily affect the planting of early rice. Further improvement also limits the promotion of rice machine transplanting technology and the improvement of mechanization level

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