Machine-transplanted rice tray-free and soilless seedling raising method with rock wool as matrix

Abstract

The invention relates to a machine-transplanted rice tray-free and soilless seedling raising method with rock wool as a matrix. The method comprises the steps of seedling bed preparation, seedling bed fertilization, seedling raising matrix preparation, seed treatment, precise sowing, film mulching and watering, seedling bed management and the like. About 15 kg of compound fertilizer is broadcast per 500 m<2> of bottom soil fertilizer, a water-soluble medium trace element fertilizer can be applied at he same time, the fertilizer is mixed with water to be sprayed or irrigate seedlings, performing continuous spraying for 8 days from a 2-3 leaf stage, and 160 kg of a nutrient solution is sprayed per 500 m <2> of a seedling bed every day. The method has the characteristics of simplicity and convenience in seedling raising operation, accuracy and uniformity in seeding, high seed emergence rate and seedling rate, low seedling raising cost, immunity of seedlings to seedling damping off and rice blast, good seedling quality, capability of mechanically transplanting large seedlings and the like.

Description

technical field [0001] The invention relates to a diskless and soilless seedling raising method for machine-transplanted rice using rock wool as a substrate, in particular to a diskless and soilless seedling raising method for hybrid rice. Background technique [0002] Seedling raising is an important part of rice production, especially hybrid rice has strong tillering ability, so it is necessary to adopt sparse sowing to cultivate strong seedlings with tillers. Rice seedling raising methods are varied, the seedling raising methods adopted are different, and the types of seedlings are also different. According to the different ages of the seedlings transplanted, the seedlings can be divided into small seedlings, medium seedlings, and large seedlings; and according to the different seedling raising methods, the seedlings can be divided into water seedlings, wet seedlings, and dry seedlings. For machine-transplanted rice or hybrid rice, dual-mode discless mud seedling raising...

AI Technical Summary

Problems solved by technology

However, floppy disks and hard disks with soil or matrix as the carrier have difficulties in taking soil and crushing soil, or the cost of substrate production and transportation is high, and special seedling trays, seedling trays, and seedling trays are required, and soil and substrate must be cleaned. Disinfection and other issues, especially dry seedlings are more prone to blight, rice blast and other diseases than wet seedlings