Paddy rice sprout cultivation composite nutrient medium, and preparation method thereof

Abstract

The invention discloses a paddy rice sprout cultivation composite nutrient medium, and a preparation method thereof. The paddy rice sprout cultivation composite nutrient medium is prepared from, by volume, 10 to 65% of carbonized rice husk, 25 to 60% of grass carbon, 10 to 60% of vermiculite, 1 to 5% of a seedling strengthen agent, and 5 to 20% of attapulgite powder. According to the preparation method, the above raw materials are mixed to be uniform, and an obtained mixture is sieved using a sieve with a pore diameter ranging from 8 to 10mm so as to obtain a finished product. The paddy rice sprout cultivation composite nutrient medium is excellent in water retention and water supply capacity, is reasonable in nutrient combination, is capable of supplying nutrients at a ratio needed by the growth of rice seedlings, is capable of increasing seedling emergence speed and seedling emergence rate, promoting root system growth, obtaining short strong high-quality seedlings, increasing machine rice transplantation survival rate, reducing seedling missing rate, increasing rice yield, reducing transportation cost of purchase of culture medium, reducing medium cost and sprout cultivation cost, increasing economic income of farmers, increasing labor productivity, and is especially suitable to be used in the southern Jianghuai hilly region.

Description

technical field [0001] The invention relates to the technical fields of agricultural production materials, agricultural solid organic waste recycling and application thereof, in particular to a rice seedling-raising composite nutrient matrix and a preparation method thereof. Background technique [0002] Rice is the main food crop in China. In the 60 years since the founding of New China, the total area of ​​rice planted in my country has reached an average of 3.094×10 7 hm 2 , accounting for 27% of the total sown area of ​​grain crops in my country; the average annual output is 1.333×10 8 t, accounting for 42% of the total grain output, ranking first in grain crops. my country's rice planting area is second only to India, but its total output ranks first in the world, and it is the country that produces the most rice in the world. In 2014, the rice planting area in my country was 3.031×10 7 hm 2 , total output up to 2.065×10 8 t. Therefore, the development of rice pr...

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Problems solved by technology

Different materials have great differences in physical and chemical properties such as water holding, water conduction, pore condition, density, water permeability and air permeability, water retention and fertilizer retention, and nutrient content. Strong ability, but low nutrient content, and weak water and fertilizer retention ability of river sand; organic materials such as barn manure and mushroom dregs have strong water and fertilizer retention ability, can be taken from villages locally and turn waste into treasure, but the water conductivity and air permeability are low; peat Rich in fiber content, loose and porous, good ventilation and water permeability, large specific surface area, strong adsorption and chelation capabilities, strong ion exchange and salt balance control capabilities, and can enhance plant resistance to drought, disease, low temperature, and salt erosion It is widely used as a substrate material for seedlings, but peat is mainly distributed in the northeast of my country, and it needs long-distance transportation. The resources and quantity are very limited. Find other materials to replace

However, in recent years, with the development of my country's industrial and agricultural modernization, rural areas or factories have basically changed to gas or electricity, and the number of rice husks used as fuel is very small, resulting in a large number of rice husks being abandoned in the wilderness, which not only pollutes the environment, but also wasted resources

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