Seedling culture substrate and preparation method thereof
A technology for raising seedlings and organic bases, applied in the field of raising seedlings, can solve the problems of difficult survival and high maintenance cost of sandy seedlings, and achieve the effects of realizing recycling and sustainable development, improving survival rate and shortening the period of seedling raising.
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Embodiment 1
[0019] The corn stalks are pulverized by a universal pulverizer. The length of the pulverized corn stalks does not exceed 2cm, and the moisture content is less than 20%. It enters the roller dust collector for screening and purification; enters the puffing machine for puffing. The operating temperature is 170°C and the pressure is 0.9MPa. The rotation speed is 800r / min, according to the mass ratio of corn stalks: peat (manufacturer: Zhaoqing Hengfa Agricultural Science and Technology Co., Ltd.): perlite (manufacturer: Shanghai Hongjun Gardening Products Co., Ltd.) is 70:20:10 and mixed evenly , made into a seedling substrate. After testing, the pH value is 6.8, the EC value is 0.55ms / cm, the water content is 25%, and the ventilation porosity is 24%.
Embodiment 2
[0021] The caragana is crushed by a universal grinder, the length after crushing is not more than 3cm, and the moisture content is less than 15%. It enters the roller dust collector for screening and purification; enters the puffing machine for puffing, the operating temperature is 180°C, the pressure is 1.0MPa, the screw The rotating speed is 600r / min, according to the mass ratio of puffed lemon sticks: brewer's grains (source: Nanning Nongaigou Agricultural and Sideline Products Operation Department): phosphate rock powder (source: Decheng Chemical Products Operation Department, Licheng District, Jinan City, Shandong Province) is 75:15:10 Mix well to make seedling substrate. After testing, the pH value is 6.6, the EC value is 0.62ms / cm, the water content is 28%, and the ventilation porosity is 22%.
Embodiment 3
[0023] The apple tree branches are crushed by a universal grinder. The length of the crushed apple tree is not more than 3cm, and the moisture content is less than 20%. It enters the roller dust collector for screening and purification; enters the extruder for puffing, the operating temperature is 180 ° C, and the pressure is 1.0 MPa. The screw speed is 800r / min, according to the mass ratio of apple branch puffing material: rice husk (Hunan Hekang Ecological Agriculture Development Co., Ltd.): vermiculite (manufacturer: Shanghai Hongjun Gardening Supplies Co., Ltd.) is 75:15:10 and mixed evenly , made into a seedling substrate. After testing, the pH value is 7.0, the EC value is 0.61ms / cm, the water content is 30%, and the ventilation porosity is 21%.
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