Special soilless organic composite matrix for raising seedlings of mechanically-transplanted japonica rice and preparation method of matrix

Abstract

The invention belongs to the field of rice culturing and in particulates to a special soilless organic composite matrix for raising seedlings of japonica rice. The matrix taking agricultural wastes as materials comprises the following components in percentage by weight: 55%-65% of rice straw, 25%-35% of cow dung, 5%-10% of rice husk, 2%-3% of carbamide, 1.5%-2.0% of straw-decomposing inoculants, 15% of peat, 1%-3% of nitrogen phosphorus and potassium fertilizers, 0.015%-0.006% of seedling growing agent and 0.002% of root growth promoting agent. The special soilless organic composite matrix for raising seedlings of japonica rice has the advantages that the local agricultural wastes serve as the main raw materials, so that the matrix is available in material, low in transportation and production cost, facilitates the cyclic utilization of the agricultural wastes, reduces the pollution to the environment, completely solves the problems that the vegetation is damaged when soil is extracted for raising the seedlings and the soil is extracted difficultly and reduces the labor strength and cost for processing the extracted soil; in addition, auxiliary additives are organic non-toxic products, easy to degrade in a farmland ecosystem and free of secondary pollution; the matrix is long in time period suitable for planting the seedlings; the time period of the matrix suitable for planting the seedlings can be extended to 28 days; and the matrix is great in range of seedling ages and strong in adaptively in date of seeding.

Description

technical field [0001] The invention belongs to the field of rice cultivation, and in particular relates to a special soilless organic japonica rice seedling-raising substrate and a preparation method using agricultural waste as materials. Background technique [0002] Rice is the main food crop in my country. However, the traditional rice seedling raising and transplanting operation conditions are difficult, labor-intensive and inefficient, coupled with the large transfer of rural labor force, the existing rice production methods can no longer adapt to the development of modern agriculture. It can be predicted that with the continuous improvement of machine-transplanted rice seedling raising technology and field supporting technology, the popularization of machine-transplanted rice seedling technology will become an important driving force for the further improvement of rice production level. However, the existing machine-transplanted seedling-raising technology mainly use...

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Problems solved by technology

However, there are also certain deficiencies: (1) using only rice husks, straws and other agricultural wastes as the main material often leads to difficulties in stacking and decomposing, uneven nutrition, and insufficient nutrients; (2) poor ventilation and water retention structure, which is not conducive to seedlings Root growth; (3) Some auxiliary materials or additives are difficult to degrade in the soil, causing soil pollution; (4) A seedling-raising substrate is universally applicable to all types of rice, without specific consideration of the specific growth characteristics and fertilizer requirements of different types of rice

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