Preparation method and application of special microbial seedling-raising substrate of rice
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A seedling-raising substrate and microbial technology, which is applied in the fields of rice seedling raising and microbial seedling-raising substrates, can solve the problems of uneven quality of substrates, single function, and high freight costs
Inactive Publication Date: 2020-04-10
天津市农业科学院
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[0003] The rice planting area in Tianjin is about 400,000 mu, mainly concentrated in Baodi and Ninghe districts. At present, the seedling substrates are basically purchased from surrounding areas such as Jiangsu and Hebei. The quality of the substrates varies. High (20 yuan per bag, 50L), and the freight will be even higher. In addition to soaking the
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Embodiment 1
[0039] A special microorganism seedling-raising matrix for rice, it is made up of following raw material:
[0046] The particle size of the seedling-raising substrate particles is 1-10mm, the pH value is 6.8-7.3, the electrical conductivity is 51.5-60.4ms / cm, and the spore content is 10 7 / g.
Embodiment 2
[0048] Effects of Microbial Seedling Substrates on Rice Plant Growth
[0049] Table 3 Effects of microbial seedling substrates on rice seedlings
[0050]
[0051] From the above data, it can be seen that there is no significant difference between the microbial seedling-raising substrate and the commercially available seedling-raising substrate on rice seedling emergence rate, plant height, root length, stem thickness, above-ground fresh weight, and underground fresh weight, and rice seedlings can grow well.
Embodiment 3
[0053] Control Effect of Microbial Seedling Substrate on Rice Blight
[0054] Table 4 Control effect of microbial seedling substrate on rice blight
[0055]
[0056] Control Effect of Microbial Seedling Substrate on Rice Bakanae Disease
[0057] Table 5 Control effect of microbial seedling substrate on rice bakanae disease
[0058]
[0059] The microbial seedling-raising substrate is used for rice seedling raising, and the control effect on rice blight is 65.4%, and the control effect on rice bakanae disease is 69.3%.
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Abstract
The invention discloses a preparation method and application of a special microbial seedling-raising substrate of rice. The substrate comprises the main ingredients: peat soil, vermiculite, biochar, rotten chicken manure, river sand, biocontrol bacteria and the like. The seedling-raising substrate has a particle size of 1-10 mm, a pH value of 6.8-7.3 and conductivity of 3.0-3.4 ms/cm, the spore content is 107/g, and the control effect on rice blight and bakanae diseases can reach 65% or above in the rice seedling period. All the nutrients which are required for growth of rice seedlings can beprovided by the microbial seedling-raising substrate, irrigation of a nutrient solution is not needed any more, and meanwhile, occurrence of rice blight and bakanae diseases can be prevented effectively in the rice seedling period. The seedling-raising substrate can be applied to rice seedling raising through substrates.
Description
technical field [0001] The invention belongs to the technical field of agricultural production, and specifically relates to a microbial seedling-raising substrate with nutrition, air permeability, water retention and disease prevention, and is suitable for rice seedling raising. Background technique [0002] High-quality seedlings are the prerequisite for high-yield rice, and the substrate is the material basis for ensuring high-quality seedlings. In production, rice seedlings often grow slowly, or grow weakly, or die in pieces, or the formula is cumbersome, or the management is complicated. In response to these problems, we conducted a formula screening, focusing on several key points: 1. First, the substrate must have air permeability, that is, the requirement for the porosity of the substrate. Poor air permeability of the substrate will cause a decrease in the activity of aerobic microorganisms and strong water absorption. , resulting in compaction, the damage to the seed...
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