Special matrix for soilless paddy rice seedling breeding and preparation method thereof

Abstract

The invention discloses a special matrix for the soilless paddy rice seedling breeding and a preparation method thereof. The special matrix for the soilless paddy rice seedling breeding comprises the following raw materials, 10-20% of a biological organic fertilizer, 80-85% of an organic matter which comprises materials of carbonized rice husk, rice husk ash and plant straw ash, 1-1.5% of a fertilizer, 0.2-0.5% of sulfuric acid, and 0.2-0.4% of a bactericide. According to the biological organic fertilizer of the special matrix for the soilless paddy rice seedling breeding of the invention, the content of the organic matter is greater than 30%, the content of humic acid is greater than 15%, the number of live beneficial microbe strains in 1ml of the biological organic fertilizer is 60 millions, the content of quick-acting N, P and K is high to above 6%, and the biological organic fertilizer is rich various medium trace elements of Ca, S, Si, Fe and Mg needed by crops. By adopting the special matrix of the invention to breed seedlings, the seedlings have a large number of roots and root hairs and have a large root capacity, no seedling diseases are generated, the seedling packing is good, the seedlings take root and do not need seedling recovering period after transplanting, the seedlings survive after being directly rooted, and effective tillering is started in advance, so the yield increase and the income increase are realized.

Description

technical field [0001] The invention relates to the field of agricultural technology, in particular to a substrate specially used for soilless seedling raising of rice and a preparation method thereof. Background technique [0002] Since the 1980s, rice dry-raised sparse planting cultivation technology has been widely used in my country through introduction, experimentation and demonstration. With the great leap forward, rice production has developed rapidly, presenting a gratifying situation today, with large planting area, high per unit yield level, the total output ranks first in grain output, and remarkable economic benefits. [0003] The essence of dry rice seedling sparse planting and transplanting technology is: use fertile and loose dry field soil, and in the dry environment of the seedbed, cultivate strong and developed root system, short and thick stems and leaves, and low tiller seedlings, and transplant them to paddy fields After the environment, it will burst in...

AI Technical Summary

Problems solved by technology

When the drought seedlings were first raised in the countryside, the farming was done according to the technical requirements. The seedlings cultivated were of good quality, turned green quickly, had many tillers, high yields, and were disease-free and disaster-free. Farmers have personally experienced this. It is very difficult to handle topsoil, decomposed farmyard manure and peat. There are few livestock and poultry, and low-lying floodplains, meadows, and grass ponds where peat can be dug have all developed into paddy fields. Most of the dry fields with water sources They have also been converted into paddy fields. Each hectare of seedlings requires 2m3 seedling soil per year. After years of continuous excavation, all the dikes and wasteland resources in the paddy field area have been exhausted. Knowing that the current seedling soil is far from the dry farming technology The purpose is that there is really no other way. Now, no matter black soil or loess, beside the roadbed or under the ditch, as long as it is dry and can be sieved into fine soil, it can be used as seedling bed soil. It is not fertile to use chemical fertilizers to make up for it. Seedling soil quality Barren, hardened, and cold pulp, the seedlings bred are slender and have few roots, excessive growth and disease, low survival rate after transplanting, slow greening, and late tillering. It is not at all high-quality seedlings to achieve high and stable yields. In terms of weather, when the year is good, the output can be maintained. If there is a slight disaster, the rice farmers will suffer unspeakably. In the spring flood year, there will be water everywhere, and there will be no place to collect soil. Farmers will be helpless and delay the farming time

[0005] At present, many units are studying the technology of rice seedling cultivation without soil, and they mostly use mineral materials such as expanded particles, fine sand or perlite as fillers, combined with inorganic fertilizer nutrients, practical application, and the practical effect of agronomy is very unsatisfactory.

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