The plug tray is an important carrier for seedling tray seedlings(plastic nursery pots manufacturers). It is divided into polystyrene foam plug trays and plastic plug trays according to different materials. The latter is more widely used. The standard size is 54cm×28cm, and there are 20, 50, 72, 128, 200, 288. 400,512 seedling holes. The choice of the number of holes in the seedlings is related to the type of vegetables and the length of the seedlings. The root growth space and the rhizosphere environment of the plug seedlings differ greatly from the traditional seedlings(50 cell plug trays supplier). The seedling substrate suitable for the growth of the roots of the plugs should have the following characteristics:
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(5 gallon black plastic pots wholesale)Strong fertilizer-preserving ability, to meet the nutrients needed for root development, avoid nutrient loss(seed starter trays); good water retention capacity, avoid rapid evaporation of root water; good permeability, avoid hypoxia in the rhizosphere; not easy to decompose, facilitate root penetration, can support plants. Commonly used professional seedling substrates are: Canada's Fafard nursery grass charcoal, American Sunshine (Sungro), Earl (Berger), Germany's Klasman (Klasman), etc.(105 cell plug trays supplier), characterized by pH, EC adjusted, adding water absorbing agent and sustained release Start the fertilizer.
The physical and chemical properties of the matrix are commonly used(plug trays wholesale). The commonly used substrate types of plug seedlings include peat, vermiculite, perlite, carbonized rice husk, sawdust, etc. The physical and chemical properties of these substrates mainly include: the degree of decomposition of the organic matrix: the bulk density of the matrix, the total porosity and the adsorption of the matrix. Relevant cushioning(32 cell plug trays supplier). The pH of the substrate: the effect on the roots of the seedlings, the pH of the different substrates is different, and most horticultural crops require pH slightly to neutral.
(5 gallon black plastic pots wholesale)The amount of cation exchange and buffering capacity of the matrix(black plastic nursery pots): The amount of cation exchange of the matrix is the total amount of exchangeable cations adsorbed by the organic and organic inorganic colloids of the substance, expressed in milligram equivalents of the substitution cation of 100 gram of the matrix. The higher the organic matter content, the larger the cation exchange capacity, the stronger the buffer capacity of the matrix, and the stronger the water retention and fertilizer retention capacity(seed starting trays supplier). The total porosity of the matrix: the sum of the matrix water holding pores and the venting pores.
Peat: According to the geographical conditions, plant types and decomposition degree of peat formation(plastic nursery pots wholesale), it can be divided into high-grade peat, low-grade peat and medium-grade peat. Low-grade charcoal: distributed in the swampy zone of low-lying stagnant water, with high decomposition degree and high fertilizer availability. It can be directly used as fertilizer, but it has a large capacity and poor water absorption and permeability(128 cell seed trays wholesale). It is not suitable for seedling substrate high-grade peat: mainly leeches It is distributed in the high position of low-level peat formation and has a low degree of decomposition.
(5 gallon black plastic pots wholesale)Median peat: The nature is between high and low peat, which can be used as a seedling substrate(plastic nursery pots). Physical properties of different sources of peat. The rotating handle should be flexible and the table moves smoothly. Load inspection, according to the model of the greenhouse in the greenhouse, each model is randomly selected for the following load test; static load inspection: installation and adjustment of the seedbed in the entire greenhouse(128 cell plug trays supplier). The seedbed table is combined on the rolling body and the steel mesh surface is laid.