Lime nitrogen ManufacturersFor you to explain the high temperature stuffy shed sterilization
Calcium cyanamide, known as lime nitrogen, is a high-efficiency soil disinfection fungicide produced by Ningxia Runyang Fu Chemical Co., Ltd.
At present, it is the best time to sterilize and disinfect the soil high temperature stuffy shed in the shed. For more than three years of planting in the shed or solar greenhouse soil transmission disease is becoming more and more serious, fungal diseases, bacterial venereal diseases, root knot nematode disease, soil compaction, acidification, some plants after the death of seedlings do not find out the cause, in fact, the soil salinization caused by the salt damage. In order to radiometric these problems, the use of lime nitrogen, in summer facilities leisure for soil disinfection, the use of summer high temperature + lime nitrogen + straw for soil disinfection. This method has been written by the Ministry of Agriculture Rural Soil Research Institute, "Solar greenhouse pollution-free vegetable production technical operating procedures."
Specific methods: Sprinkle the surface with shredded straw or wheat straw (1 square meters sprinkled 1 kg) and lime nitrogen (l square meters applied 0.1 kg), fully mixed with the soil (with rotary ploughing two times), The ridge (ridge width 60 cm, height 40 cm), and cover the film, the ditch irrigation, will be facilities, large shed closed. Daytime surface temperature of up to 70 ℃, 20 cm deep soil temperature in 40~50℃, lasting 20-30 days, can play the role of soil disinfection and salt reduction.
For plots with less than 20 cm of soil tillage, when the soil is tied to a heavy salinized shed, or the root knot nematode occurs in a more common shed, the soil must first be ditches 30~40 cm, then sprinkled with lime nitrogen, straw (wheat straw or corn straw, or duck ring dung, feeding cattle leftover grass slag, fresh melon bean seedlings crushed), Spin tillage two times, then start the ridge, cover the film (closed more strict the better), irrigation, closed shed, high temperature stuffy steaming. Disinfection time can be from mid-June to the end of August. The higher the temperature, the better the effect of insecticidal and sterilization.
For diseases, pests are not too serious, or only dead seedlings and there is no root nematode of the shed, or the last year has been strictly disinfected in the shed can take a simple method, trench ridge alternating No-tillage method: The original walkway deep digging wide 30~40 cm, trench depth 25~30 cm, in situ vegetable seedlings (including disease strains of the body) Fresh seedlings 2000~3000 kg/mu, or other straw (dry straw 600~1000 kg) and so on, with organic matter with lime nitrogen (every 60 kg/mu) and lower crop crops with organic fertilizer into the ditch, the edge and ridge back soil at the same time backfill, leveling and then sprinkle lime nitrogen (every 15 kg/mu), Then the original ridge back soil will be covered on top, forming a new ridge back, the original back into a ditch. Cover mulch, irrigation, stuffy shed for about 20 days. We should pay attention to the cleaning of the shed film, maintain good light transmittance, improve the disinfection effect. The film is hung for 5-7 days, according to stubble can be directly planted under the crop (melon, beans, heat-resistant cabbage, etc.), if the cultivation of summer and autumn stubble crops do not need to apply other fertilizers can be directly planted. If disinfected in 8 September, it is best to use the new shed film transmittance is good, disinfection effect is obvious.
In addition, in the seedling to prevent the infection of pathogens, to do a good job of seedbed soil disinfection, or soilless seedling. Bed soil disinfection using lime nitrogen, each kilogram of disinfection bed soil 1 cubic meters, disinfectant and soil blending, accumulation, with film thin capping stuffy 7-10 days, a little drying after the nutritional bowl seedlings can be installed. It is better to promote root growth by combining the application of biological fungus fertilizer in implantation, or by rooting or spraying with os-and Shi Ling. In areas where Jogan nematode is more common, avermectin is poured over the implant, which will eliminate the re-infection of the seedlings during transplanting operations, and the effect is better.
Note: In the application of lime nitrogen should wear a mask, wear overalls, away from the livestock living area, 24 hours do not drink alcoholic beverages, so as not to attract chest stuffy and suffocating and other adverse chemical reactions. If there is poisoning or false clothing, do not spit, you can drink more water. such as contact with the skin, take off contaminated clothing, clean the skin, mistakenly open eyes with a lot of water rinse, or as soon as possible to seek medical attention.