Nutrient slowly-released type substrate block for vegetable seedling

Abstract

The invention discloses a nutrient slowly-released type substrate block for vegetable seedling. The substrate block comprises the following components: peat, vermiculite, pearlite, spent mushroom composts, chopped straws, coated controlled-release urea and coated controlled-release compound fertilizers. The substrate block is prepared by such natural materials as peat, vermiculite and pearlite, and agricultural organic wastes and polymer-coated controlled-release fertilizers. The substrate block is especially suitable for seedling of the vegetables planted with seeds. The main nutrients in the substrate are provided by the polymer-coated controlled-release fertilizers and the content of the nutrients is improved by more than 10 times over the common seedling substrates; meanwhile, the substrate can be matched with the controlled-release fertilizers with different release speeds according to the needs of the cultivated plants so as to ensure the release speed of the nutrients in the substrate to meet the nutrient needs of different cultivated plants. Being used for crop seedling, the substrate block can realize that additional fertilizers are not needed in the seedling stage and even the early growth stage.

Description

technical field [0001] The invention relates to a plant growth substrate, in particular to a nutrient slow-release vegetable seedling raising substrate block. Background technique [0002] At present, there are four main ways of raising seedlings in the vegetable production process: 1) Seedling raising in ground beds, where seedbeds are established in facilities or on the ground, and fertilizer is added after the surface soil is turned and raked, and the seeds are sown or on-demand and covered with fine soil of 1-1.5 cm. However, this method requires more experience in mixing seedling bed soil, and it is easy to burn seedlings, waste seeds, have many weeds, and cause serious soil-borne diseases. 2) Soil seedling raising, that is, using relatively sticky soil to make soil seedlings. This method has poor permeability of the soil and the survival rate of the seedlings is low. When transplanting, the soil is easy to break, causing root damage and slow seedling growth. 3) Nutrie...

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Problems solved by technology

However, this method requires more experience in mixing seedling bed soil, which is easy to burn seedlings, waste seeds, have many weeds, and serious soil-borne diseases

2) Soil lump seedlings, that is, use relatively sticky soil to make soil lumps for seedling cultivation. Due to the poor permeability of the soil lumps, the survival rate of seedlings is low in this method. The soil lumps are easy to break when transplanting, causing root damage and slow seedling growth

3) Nutrient pot / bag seedling cultivation, that is, plastic pots or cardboard cups are used as containers, filled with fine soil for seedling cultivation, and the selected seedling cultivation soil is mostly local garden soil plus a certain proportion of organic fertilizer. Due to the selection of materials and the ratio of Randomness, without strict technical standards, it is not easy for ordinary farmers to master. For those who lack seedling raising experience, it is very easy to cause seedling failure. Very cumbersome, labor-intensive and time-consuming

4) Use peat, vermiculite, crushed straw and other materials to press mechanically to make seedling raising matrix blocks for seedling raising. However, since this kind of seedling raising matrix blocks contains very little effective nutrients, it needs to be carried out many times after vegetable seedling raising and planting. Fertilization is time-consuming and the utilization rate of fertilizer is not high