Agricultural Products Lists
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Planting techniques of Autumn Maize
Autumn corn should be no-tillage and direct seeding after the middle of July. After the previous corn harvest, seize the time to clean the countryside, early sowing is the key, generally does not require deep ploughing. 1. The seeds should be dried for 2 to 3 days, and the seeds should be soaked for 4 to 6 hours before sowing, so that the seedlings can emerge evenly and neatly. Arrange the plant spacing according to the density of 3500 to 4000 seedlings of 667 square meters.
2018-09-13 -
Cultivation techniques of Autumn Sweet Corn in sowing period
1. Characteristics and nutritional value of high-oil corn the outstanding characteristic of high-oil corn is that the grain oil content is high, which is more than 5% higher than the average oil content of ordinary corn. High-oil corn generally has higher protein, lysine and tryptophan. In addition, high-oil corn also has higher levels of life support An and vitamin E than ordinary corn. ...
2018-09-13 -
Problems needing attention in the use of herbicides in Maize planting
1. If the base fertilizer is insufficient, topdressing can make up the base fertilizer. The advantage of topdressing and replenishing farm manure is to increase the content of organic matter in soil and enhance the aggregate structure of soil. However, most farmers often ignore this point in maize cultivation and do not pay attention to the application of base fertilizer. The insufficient topdressing of base fertilizer (mainly chemical fertilizer) can only make the soil thinner and thinner.
2018-09-13 -
How to cultivate Maize
1. Land selection 1. Irrigated corn should choose plots with flat terrain, good structure, good air permeability and high soil fertility. 2. Film-mulched corn can choose dry flat land, mountain root land, horizontal terrace, Eryin land, mild saline-alkali wetland, alpine mandian, one water land, and do not choose steep slope.
2018-09-13 -
Symptoms of element deficiency in corn
In recent years, the occurrence range of corn sunflower scale has been expanding, and the occurrence degree has increased year by year, which has posed a serious threat to corn production and has become the main pest restricting corn yield. The corn sunflower scale belongs to Homoptera, Coccidae. The insect has 3 generations every year in Hebei Province and is harmful to the second generation (mid-June-early-mid-August).
2018-09-13 -
Key points of Control techniques of Maize Gray Leaf spot
The gray leaf spot of maize can occur in the whole growth period, but the disease is the most serious in the heading and filling stage. The initial stage of the disease is water-stained light brown spots, these spots extend parallel to the leaf veins, often rectangular, more obvious to the light perspective, gray in the middle of the disease spot, with brown lines on the edge. The size of the lesion is 2 mi 4 × 10 mi 24 (mm).
2018-09-13 -
Control of Maize Red Leaf Disease
Symptom Huangzao four groups of improved varieties in the filling period in the event of low temperature, overcast and rain, the leaves turn red, which is called red leaf disease. The cause of the disease is related to the rapid filling of this variety, when a large number of synthetic sugars cannot be rapidly transformed into anthocyanins and green leaves turn red due to metabolic disorders. Prevention and control methods (1) serious occurrence areas, not in.
2018-09-13 -
Control techniques of Maize smut
Corn smut is called "ash bag" by farmers. It can occur in all growth stages of maize, harming male and female ears, male and female, stems and leaves, etc. Symptom identification the symptoms were gradually obvious before and after the bolting of corn. The affected parts grow tumors of different sizes, which are white or reddish purple at first, then turn gray, and spread black powder after rupture. All right.
2018-09-13 -
Reasons for the poor emergence of maize seedlings
① low temperature or heavy rain: experiments show that low temperature will reduce the germination rate or germination energy of seeds. Too much Rain Water will hinder the normal respiration of seeds and easily cause seeds to be infected by mold and cause rotten seeds. ② extensive soil preparation or improper application of fertilizer: bumpy grains, uneven land, uneven soil moisture or different sowing depth.
2018-09-13 -
The cause of empty chaff of soybean
1. The difference of breed. The occurrence of middle and late maturity varieties was more serious, while that of early and middle maturity varieties was lighter. two。 Drought and waterlogging during childbearing period are the key factors leading to high grain rate. The best rainfall at the flowering and pod stage of soybean is 180 mm. In soybean flower and pod period, waterlogging damage is more harmful than drought, especially waterlogging disaster, empty grain rate,.
2018-09-12 -
Occurrence and Control of Soybean Red Spider
Red spider is a general term for red spider mites, which is a composite population of several species of spider mites and belongs to the spider mite family. In Huachuan County, it occurs in different degrees every year, but it belongs to light occurrence year. However, according to this year's survey, due to the recent high temperature and drought, the damage of red spiders to soybeans in Huachuan County has risen from a secondary position to a major one.
2018-09-12 -
Prevention and control of soybean top blight
Soybean top blight, also known as bud blight, is one of the soybean virus diseases that have a great impact on yield. Due to different periods of onset, the loss caused was 25% to 100%. Similar symptoms appeared on the foreign varieties introduced in Shandong Province in 1962, and then there were similar symptoms in Hebei, Beijing, Liaoning, Jilin, Heilongjiang and other places.
2018-09-12 -
Occurrence and control of soybean blight
Soybean blight is commonly known as "dead tree", "quenching" and "black root disease". In years with serious disease, the rate of plant death in lightly diseased fields was 5% to 10%, and that in seriously diseased fields was more than 30%. Individual fields even died out, resulting in no yield. 1. The symptom of soybean blight in the field occurred only in the seedling stage, and the main roots of seedlings and young plants.
2018-09-12 -
Occurrence and control of Sclerotinia sclerotiorum in soybean
Sclerotinia sclerotiorum is a common disease on soybean crops, which mainly causes stem rot, pale lesions, hollow stems and black sclerotia, which is easy to break. In the past two years, soybean Sclerotinia sclerotiorum has a tendency to increase year by year. Causes and characteristics: 1. The number of sclerotia in the field Sclerotinia sclerotiorum is a fungus.
2018-09-12 -
Control measures of soybean diseases
Sclerotinia sclerotiorum mainly infects soybean stems and usually begins to occur in late July. Brown spots appeared on the stems at the early stage of infection, white cotton flocculent mycelium and white particles appeared on the later spots, and then black particles (sclerotia) appeared. Vertical dissection of diseased plant stems, visible black cylindrical rat-like sclerotia, diseased plant dead after...
2018-09-12 -
Soybean disease control: downy mildew
[distribution and damage] it occurs in all soybean producing areas all over the country, especially in Northeast and North China where the temperature is cold. The disease is caused by fungal infection of Peronosporamanschurica (Naum.) Jyd.etGaum in Northeast China. Generally, the output is reduced by 6%, the price of beans is reduced by 15%, and the damage rate of beans is about 10%. Except for the great harm.
2018-09-12 -
Determination and Control of Soybean "Fire Dragon Seedling"
Soybean cyst nematode disease is also called "fire dragon seedling" disease, which is caused by nematode parasitism on soybean roots. The root system of diseased plants is poorly developed, the lateral roots are significantly reduced, the growth is slow, the plants are short, the stems and leaves are yellow, the pods are not full, or the seeds are not set, and even the whole plant dies. Pulling up the diseased plants and observing, we can see that there are many needles on the fine roots...
2018-09-12 -
Integrated Control of Three Pests on Spring Soybean
1. Ground tiger. The main pest infesting local crops is cutworm. 1, damage characteristics: larvae bite seedlings from the ground, resulting in lack of seedlings broken ridge, main stem lignification, feeding near the ground plant root epidermis, causing root injury, affecting the plant roots to absorb water, so that the plant gradually wilted and died.
2018-09-12 -
Pay attention to the prevention and control of maize tumor smut
The symptoms of the disease can be infected in all parts of the ground during the whole growth period of corn, especially in the male-pumping stage. tumors of different sizes are produced in the affected part. at the initial stage, the tumor is wrapped in a white film, then turns gray, and then spreads black powder after cracking. that is, the spores of the pathogen. On the leaf easy to produce bean grain size tumor-like pile, male.
2018-09-12 -
Diseases and control of pollution-free soybean
Soybean aphid is one of the main pests of soybean. Adults and nymphs are used to suck juice on the top leaves, tender leaves and stems of soybean plants. When it is covered with stems and leaves, it can also damage young pods, resulting in plant dwarfing, reducing the number of fruiting branches and pods, reducing 1000-grain weight, and killing the whole plant in serious seedling stage.
2018-09-12