Cultivation substrate for sweet potato seedling

Abstract

The invention belongs to the field of agricultural cultivation, and specifically relates to a cultivation substrate for a sweet potato seedling. The cultivation substrate is prepared through the following steps: (1) material fermentation: a step of uniformly mixing the following components in parts by weight: 30 parts of sweet potato stalk powder, 30 parts of blue algae, 10 parts of cow dung, 0.5 part of potassium hydroxide, 0.2 part of urea and 0.06 part of a fertilizer fermenting agent, carrying out stacking decomposing, guaranteeing the content of water to be 40 to 50% and a temperature to be 50 to 60 DEG C during the period of stacking decomposing, and carrying out turning once every 15 days until the state of decomposing is achieved, i.e., humus is obtained; and (2) substrate mixing: a step of weighing the following components in parts by weight: 40 parts of the humus, 20 parts of plant ash, 10 parts of pinewood sawdust, 10 parts of coarse sand, 0.8 part of sodium stearoyl lactylate and 0.005 part of a fungicide, and carrying out uniform mixing so as to obtain the cultivation substrate for the sweet potato seedling. The substrate provided by the invention can significantly improve commodity characteristics, disease resistance and yield of sweet potato, and enhances the quality of the sweet potato.

Description

technical field [0001] The invention belongs to the field of agricultural cultivation, and in particular relates to a cultivation substrate for sweet potato seedlings. [0002] technical background [0003] China is the largest producer of sweet potatoes in the world. In 2010, the planting area was about 4.6 million hectares, accounting for about 50% of the world's planting area, and the annual output was about 1.0×108 tons, accounting for 75.3% of the world's total output. It is an important grain in China, Raw material for feed and industrial processing. Sweet potato is drought-resistant, salt-alkali-resistant, barren-resistant, high yield, wide application, strong adaptability, and is an important energy crop. my country has little land and a lot of people. Under the pressure of food security, the development of sweet potato industry can only make more use of non-cultivated land resources with soil barriers under the principle of "not competing for land with food". [00...

AI Technical Summary

Problems solved by technology

At present, vermiculite is mainly used as the cultivation substrate for sweet potatoes. Because vermiculite is a kind of ore resource, its resources are limited, and the production process is complicated. It must be returned to the furnace for high-temperature calcination and disinfection for repeated use, so the price is expensive.

When vermiculite is used as the cultivation substrate of the original seed of detoxified sweet potato, because of its fragility, with the prolongation of the use time, it is easy to make the medium dense and lose the air permeability and water retention, resulting in serious late blight; vermiculite only has water retention , does not have nutritional function, and nutrient solution needs to be supplemented during production to meet the growth needs of the original seed of detoxified sweet potato, which increases the production cost and greatly affects the yield and quality of sweet potato

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