After 4 months of rice husk application, the second cucumber is still burning
Yuncheng vegetable farmer Liu Shifu said: "The cucumber I planted this year is now the second one. Because it is more rushed, there is no more manure applied in the shed. The fertilizer only uses one bag, but the cucumber seedlings in the shed appear. I don’t understand the phenomenon of gas damage."
After the author observed the shed, I found that the rice husk that was applied to the soil by Master Liu was still not fully fermented. The conditions after the tumbling were improved, the fermentation was decomposed, and more harmful gases were generated. Burning seedlings. Many vegetable farmers can't help but ask: Rice husks have been used for more than 4 months. The first scallions have no obvious symptoms of qi, so why are they now mad?
It turns out that the rice husk epidermis has a harder layer of silicone grease, which causes the fermentation to decay slowly. Last year, the rice husk mank bought by Master Liu was not fermented and fermented, and it was directly applied to the shed. Because the winter temperature is low, the fermented rot is slow, and the rate of release of harmful gases by manure is also very slow, and there is no obvious growth of vegetables. influences. However, as the cucumbers change, the soil is ploughed, the ground temperature rises, and the rate of maturity of the rice husk is suddenly accelerated. Once the ventilation is not good, it will cause burning.
Therefore, when applying rice husk dung, the vegetable grower should buy it more than 3 months in advance, and then build the fermentation, or apply it to the soil immediately after the gardening of the spring sorghum, spray the biological fungus, and heat the shed after heating. Manure is ripe. Rice husk fermented and fermented for a long time, it is recommended that the vegetable farmers turn over in time, and can be safely applied after 2-3 months.
Fertilizer needs to be fermented again after the shed
There are also many vegetable farmers who have said: "When we used lime-sludged sheds, we applied rice husk and chicken manure to the soil together, but when we planted vegetables, we found that the manure was not ripe and there was burning. Why?"
Many vegetable farmers are used to put rice husk and chicken manure into the soil in the summer, and combined with high temperature shacks to promote manure fermentation. This is an experience and worth promoting. However, when farmers use lime-nitrogen, methyl bromide, etc., they have also undergone the process of high-temperature suffocation, but the shed-injection agent is destructive, which not only kills root-knot nematodes, pathogens, etc. in the soil, but also soil. The various beneficial bacteria in the killing, without the microbes, it is impossible to carry out the manure. Therefore, when the shed is used, the manure is put into the shed, which can only play the role of sterilization and insecticide, but it does not promote the effect of decomposing.
Special reminders to farmers, after using lime nitrogen, methyl bromide and other smoked sheds, should promptly uncover the film ventilation, plough the soil, completely dissipate the remaining pesticides, and then apply the high-fertilizer bio-bacteria with the water, and warm the shack again. In order to promote the fermentation of manure.
Different methods of manure decomposing
There are many types of manure, and the methods of fermenting and fermenting are also different. Fresh manure, fresh chicken manure and other manure with a large water content, vegetable farmers can be decomposed by the following methods: the fermentation tank used should not be too deep, generally 40-50 cm is appropriate. I believe that many vegetable farmers have the experience that when the fermentation tank is too deep, the upper manure has been decomposed, but the lower layer is almost the same as when it was just bought. This is because the fresh manure has a large water content, is airtight, and the microorganisms are difficult to rapidly multiply. It is recommended that the vegetable farmers insert 3-5 bundles of straw per square meter after spraying the decomposing agent to ensure the manure permeability. Fermentation can also be promoted by adding an appropriate amount of soil, weeds or biological agents to the fresh manure.
Rice husk, dry chicken manure and other water content is low, easy to use, vegetable farmers can be fermented according to the following methods: If the summer is changing, the shed time is long, it is recommended to directly scatter into the shed, no morning sun or night When spraying the biological fungicide, then immediately turn over the ground, watering, and the high temperature suffocating shed can complete the decomposing of the manure. If the shed time is short, if the dry manure is used in the winter, the pile should be built in advance. The method is: add enough water to the manure to make the manure wet, then 1.5-2 meters in width and 1.2 in width. -1.5 meters, height 1-1.2 meters to build a pile, spray a biological agent every 15-20 cm, then use a wooden rod with a diameter of 6-8 cm at the top to drill holes, deep to the bottom of the pile, 20-25 cm apart One, to ensure the supply of oxygen during manure fermentation. When the manure is fermented, the vegetable farmer should pay attention to the temperature measurement. When the temperature of 20 cm under the surface of the manure pile reaches 60 °C and maintain 1-2 days, it will be turned over and replenished with water. After 3-4 times of manure without odor, it indicates that the manure is completely decomposed. Can be used with confidence. It should be noted that the temperature of the dung heap should not exceed 80 ° C to prevent high temperature burning, resulting in fermentation failure.
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