Rice semi-dry type seedling cultivation technology

Abstract

The invention relates to a rice semi-dry type seedling cultivation technology which is innovatively formed on the base of a rice dry seedling cultivation technology and is simple and convenient to perform, scientific and complete in assembled set. The rice semi-dry type seedling cultivation technology combines advantages of dry seedling cultivation and two segments of seedling cultivation and planting by insertion is convenient. The rice semi-dry type seedling cultivation technology has the advantages that work, expenditure and fertilizer are saved, seedling cultivation is safe, seedling quality is high, productivity is boosted and seedlings are high-quality. The seedlings are dried in the sun for one to two days before being sowed. Selected seedlings are soaked in warm water, torn to accelerate germination until exposed by 80% and then sowed. Holes of a seedling tray and the age of the seedlings are confirmed based on planting crops for rotation, seedlings which grow for 30 days to 35 days are placed in a seedling tray with 561 holes, seedlings which grow for 35 days to 45 days are placed in a seedling tray with 434 holes and seedlings which grow for more than 45 days are placed in a seedling tray with 343 holes. 90kg of nutrition soil for cultivating the seedlings is allocated to each mu. Two fifths of holes of a seedling tray are filled with the nutrition soil, two grains of rice are sowed, soil is used for covering all the holes and pressed and then the seedling tray is sent to a seedling field to be arranged. Semi-dry type irrigation is performed, fertilizing is reasonable and managed, and strong seedlings are cultivated, wherein the strong seedlings are stout and neat and have short, thick and white roots and at least three tillers.

Description

technical field [0001] A semi-dry rice seedling raising technique Background technique [0002] Dry seedling raising is a technique for raising rice seedlings in dry land introduced from Japan in the late 1970s. It has the characteristics of water saving and easy operation and management in the field. However, the amount of seeds used in dry seedling cultivation is large, the cost is high, and seedling raising and transporting are all operations with soil, and the workload and labor intensity are labor-intensive, time-consuming, and serious shortcomings of dead seedlings have lost their application significance in production; Seedling raising technology is a kind of seedling raising technology popularized in the early 1980s. It has the characteristics of saving seeds (0.75-1kg per mu), easy management of seedling fields, and easy cultivation of strong seedlings. High, when the seedlings have one leaf and one heart, they need to be sent and inserted in the seedling field man...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a semi-dry seedling raising technology for rice, which can solve the problem that in the current dry seedling raising technology, the amount of seeds used is large, the cost is high, the lifting and transporting of seedlings are all operations with soil, and the workload, labor intensity, and labor-intensive , time-consuming, serious shortcomings of dead seedlings, and rice two-stage seedling raising technology needs to be cultivated in the greenhouse before the seedlings "one leaf and one heart", the operation is cumbersome and expensive, and the one-leaf and one-heart seedlings out of the greenhouse need to be sent to the seedling field. Once, the labor force and strength were increased, and farmers had technical problems such as backaches and backaches when sending rice seedlings.