Seedling raising substrate for machine-transplanted seedling tray for hybrid rice

Abstract

The invention provides a seedling raising substrate for a machine-transplanted seedling tray for hybrid rice. The seedling raising substrate is prepared from the following raw materials in part by weight: 50 to 60 parts of crop stalk with lower than 10 percent of water content, 21 to 30 parts of animal waste with lower than 10 percent of water content, 13 to 20 parts of substrate carrier and 1 to 2 parts of substrate synergist, wherein the substrate synergist consists of the following components in percentage by mass: 65 to 75 percent of calcium cyanamide, 15 to 25 percent of calcium superphosphate, 7 to 9 percent of sodium silicate, 0.5 to 1.5 percent of boron and zinc and 0.5 to 1.5 percent of bioactive fungicide; the bioactive fungicide is one or several of bacillus subtilis, facultative anaerobe and agricultural photosynthetic bacteria; the raw materials are composted and fermented for three times to form the seedling raising substrate for the machine-transplanted seedling tray for hybrid rice. The seedling raising substrate is comprehensive in nutrition, is suitable for mechanized seedling raising for the hybrid rice, and ensures that germination and rooting of rice seeds are quick, the planting percent is high and seedlings are robust.

Description

technical field [0001] The invention belongs to the technical field of seedling-raising substrates, and in particular relates to a special seedling-raising substrate for hybrid rice (including super rice) plastic tray seedlings (including hard disks and floppy disks), which is especially suitable for cultivating uniform seedlings, good seedling quality, less seed quantity and high survival rate after transplanting Hybrid rice mechanized high-speed transplanting seedlings. Background technique [0002] The amount of seed used for conventional rice machine-transplanted floppy disc seedlings is high, and the amount of seed used for Honda rice is 3-5kg / 667m 2 (3kg for mid-season rice, 5kg for early rice), based on 30 trays for conventional mid-season rice per mu, the sowing amount of each tray is 100g / pan, which is equivalent to the seeding amount of 410.5kg / mu (667 m 2 ); Calculated on the basis of 1,000-grain weight of 22g, 4545.5 grains per tray, and the area of ​​each tray ...

AI Technical Summary

Problems solved by technology

Some seedling-raising substrate raw materials are monotonous, such as: vermicompost substrate, water hyacinth substrate, walnut shell substrate, oyster mushroom (edible fungus) waste substrate, cassava residue substrate, etc.; Mechanical damage, such as: agricultural waste (mainly straw) soilless matrix; some are easy to form agglomerates, such as organic matter and sludge composite matrix; some nutrients are incomplete, such as selenium-rich soilless matrix; some nutrient concentration is too high , and some are only suitable for conventional rice seedling raising, etc., it is difficult to select seedling raising substrates that are really suitable for hybrid rice machine-inserted seedling raising