Corn air pollution

With the development of industry, air pollution in or near industrial areas in urban and rural areas often occurs, causing serious losses in corn production. In industrial production, due to the discharge of harmful gases to the crops, such as sulfur dioxide and hydrogen fluoride, and under daily irradiation, ozone and peroxyacetyl nitrate produced by the photosynthetic chemical reaction between ammonia and hydrocarbons can also poison corn. .

Symptoms: The symptoms of ozone on sweet corn are dark, gray-green, water-soaked lesions that turn brown to white on both sides of the leaf. Some species produce small silver-grey to brown necrotic spots on the lateral bands of one or both sides of the leaf. The oldest leaf is poisoned at the base, the second old leaf is the victim in the middle, and the young leaf is the top victim. The edges of the leaves are the most affected, but the midribs remain normal. The poisons caused by ozone are not easily distinguishable from insect or cochlear damage, chlorine or fluoride poisoning, and natural aging. The second is that the chlorine corn is poisoned by chlorine and yellow brownish necrotic streak appears between veins. Leaves of middle-aged or older, often younger than young

Leaves are vulnerable. Third, sulfur dioxide and sulfur dioxide can be poisoned at various stages of corn plants. When severely poisoned, white necrotic spots appear between veins. Severe poisoning or chronic poisoning can make the top death and premature leaf decay. Fourth, peroxyacetyl nitrate corn is often tolerant to PAN poisoning. There are obvious white and chlorotic bands on the leaves. Young leaves may have dead tips. If the leaves are seriously damaged, the inner leaf cells may disintegrate completely and thus fall down. Rapidly growing young plants are more susceptible to this poisoning. Fifth, fluoride-contaminated corn was poisoned by cyanide and showed chlorotic mottles or spots along the edges and tips of the leaves. Small irregular chlorotic spots appeared between the veins and a continuous chlorotic band was formed. In severe cases, there are necrotic spots between the veins and the edges of the leaves. Symptoms of zinc deficiency or potassium deficiency, fleas, genetic variation, and natural aging are similar to fluoride poisoning.

Etiology identifies the source of the local pollution and observes when the symptoms occur. The production of sweet corn is more sensitive than normal corn. Some of the pollution, such as ozone, cyanide poisoning corn symptoms are often similar to potassium deficiency or natural aging, and some similar to phytotoxicity. Air pollution is related to environmental factors. Most serious pollutions often occur during periods of stagnant air characterized by warm, sunny, windless, moist or high atmospheric pressure. The sensitivity is often related to the following factors. The general rule is: reduce the sensitivity by one to several days before exposure to poisoning. Plants grow under drought conditions and are less sensitive to air pollution. Plants grow under conditions of lower fertilizer levels and the leaves exhibited damage similar to air pollution. The presence of pathogens on the leaves can affect sensitivity. Sensitivity is affected by the maturity of the plant tissue, and young leaves are often immune to victimization. Different corn varieties have different levels of ozone and Other pollutants.

Control methods to remove pollution sources.

5XZS series seed cleaning & processing machine is the combined grain seed cleaning equipment. It installed wheat huller, air cleaning screen, vibration pre cleaning sieve, gravity table, vibration sieve cleaning and grading trunk. It maximizes one machine cleaning function, minimize the labor, easing of removability. This is our featured product. Since it comes to the market, it attracts customers' attention.

Combine Grain Cleaning Machine function:

Removing coated wheat husk in the wheat huller.

Remove dust, light impurity by double air screen cleaners. Cyclone collects dust, stalk, and husk.

Remove big, small impurity in the pre cleaner.

Remove immature, eaten, sicken, moldy ones from healthy seeds on the gravity table.

Remove big, small impurity and grade seeds in the vibration sifter.

Seed cleaning & processing machine working flow:

Firstly wheat is fed from wheat huller hopper. After hulling, wheat is transferred by Bucket Elevator to precleaning sieving trunk for removing big and small impurity. There are two air screens at this sieving trunk two ends and connect air pipes. The dust cleaning system will remove the light impurity from grain twice before grain flow to gravity table. Then grain seed enter to the gravity table for removing the bad seeds. After Gravity Separator density separating, the seeds flow to main sieving trunk. In this main sieve trunk, the oversize impurity, undersize impurity will be removed. At same time, the sieve trunk can grade wheat to different size ranks.

Grain cleaning & Processing Machine has many adjusting handles. With these adjusting handles, operators can easily find the suitable air volume, vibration amplitude. Machine is user friendly and simple maintain.

We have 10 tons per hour and 20 tons per hour model. The wheat huller is optional. If clients do not clean wheat, they can order the model. The main sieve trunk we have two models: normal 4 sieve layer one and two sieving deck one. If customer only uses the machine for cleaning aim, no need to grade seeds by size, client can choose the two sieve decks type.

Seed Cleaning & Processing Machine

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SHIJIAZHUANG SYNMEC INTERNATIONAL TRADING LIMITED , https://www.seedgraincleaner.com