The right planting technique for high corn production
This is a high production rate of over 1,000 kilograms of acre. According to research and practice, maize (667 m2) meets the ecological requirements of 1,000 kg of production, with a temperature of 3000°c and a temperature of up to 1000°c. 2800°c, frostless period 150-160 days, flat ground, protected water, soil on the border or light, and medium and upper conditions。
Selection of excellent varieties
The choice of good corn seeds is a key issue in terms of harvest growth in the fall. The following principles should be observed in the selection of maize species:
(i) selection according to the conditions of the calorie resources. The local calorie resources have long been associated with the production of maize varieties. Long-lived maize varieties are highly productive and have a high potential for increasing production, and local calories and long-term production meet the needs of fully mature varieties. Sufficient heat allows for the selection of long-term and long-term maize varieties and allows the productive potential of good varieties to be effectively realized. However, the excessive pursuit of high yields and the adoption of long-lived maize varieties can lead to insufficient maturity of maize, insufficient seed grains and an impact on its nutrition and quality. Thus, the choice of maize varieties is to ensure that the maize matures properly without affecting the timely planting of the crop. High and low ground temperatures are associated with the temperature of the ground, and it is desirable to choose the long or medium- and late-to-dwelling species; low-to-dwelling species to choose the medium-to-dweller species; and low-to-dweller species to choose the medium-to-dry species。
(ii) selection according to local production management conditions. The productive potential of maize varieties is related to the conditions of production management, which require good production management for those with high production potential, and relatively low production management for those with low production potential. Thus, in areas with high levels of production management and fertile soil and abundant water sources, varieties of maize with high yield potential and high yield potential can be selected. Conversely, a slightly lower production potential should be chosen but more stable。
(iii) selecting according to the pre-planting. The increased production of maize varieties is directly linked to the pre-planting. If soybeans are previously grown, soil fertility is better and it is desirable to choose a high-yielding species; if maize is first grown and is well-growing and productive, the species may continue to be selected; if corn is infected with a disease, the species should be avoided. In addition, the same species cannot be grown on the same plot for three or four consecutive years, otherwise there will be poor and degraded land。
(iv) selection based on disease. The disease is the maize-rich kryptonite, mainly associated with soil. Soil nutrients are uneven and the temperature is abnormal, and species should be selected to avoid varieties that are unsuitable for this condition. For example, land ride 9 is only suitable for growing on plots with a balanced and high level of comprehensible soil。
(v) the selection of seeds based on their appearance. The high and low purity and poor quality of maize varieties directly affect the production of maize, which falls by 0. 61 per cent for every 1 per cent drop in the purity of maize class 1 seeds (98 per cent purity). The selection of high-quality varieties is a positive guarantee of high maize production. High-quality seed bags are sealed with the name of the seed company and a detailed address, telephone number; seed labels indicate the date of production, purity, moisture, chrysanthemum rate; and seeds have the same shape, size and colour。
(vi) based on local precipitation and temperature selection. Experience has shown that the last winter has been characterized by low snowfall, not cold winter, more rainfall in the following summer, less warm temperatures, long-lived varieties, inadequate temperature and maturity. On the other hand, the previous winter was characterized by heavy snowfall and cold winter, while the following summer rains were generally low, high temperatures, easy choice of drought-resilient varieties, and suitable medium- and late-literate varieties in lowlands。
It's been three years since the drought
Drought control and conservation are prerequisites for high productivity. The first three-year-old technique is to sow the seeds by raiding the grass, in due course, before spring and early in the morning (with full use of anti-slurp water). Fertilization occurs long before the drought (the water-efficient period for maize coincides with the peak of the same period during the july-august rainy season); maize matures before the frost (the full use of effective temperature to promote early ripening). The best time is between 15 and 25 april. Temperature indicators show that 10 centimetres of soil temperatures can be stabilized between 7 and 8°c. 2 seed drought management technology. Use of maize bioimpregnation and anti-drywater treatment (says of species for which methods are used). Quality of seeding. To ensure that the depths are suitable, that the soil is unified, and that the seedlings become more integrated, so that they are all strong。
As production increases, the role of seeding technologies in production increases. Seeding techniques include choice of seed treatment, soil preparation, reasonable density, seeding methods, sowing volumes and sowing depth。
Seed treatment: sunburning. The sun-burned maize seeds are soaked that water is sprouts early, well-sown, with high rates of seedlings and strong seedlings。
Leaching and blending: vaccination mainly provides moisture and promotes seeding. Chemical impregnation consists mainly of potassium phosphate and trace elements, but the leaching is either too high or too long, and the seeds are vulnerable to poisoning and lower germination. Insect hazards can be prevented by mixing pesticides。
Seed wrapping is a drug for the seed. When seeds are planted, they are resistant to disease, insects and seedlings, and are used to treat local pests and diseases。
Careful preparation: soil engraving is key to influencing seed quality. It's good, it's good, it's flat, it's very simple to sow it, and it's very smooth. An important part of the pre-broadcast preparation is the adjustment of soil moisture. In the case of yellow summers and swirls of summer maize, seasonal droughts often followed by wheat harvests worsen the state of the maize sowing; therefore, wheat and yellow water are often used in production to supplement the bottom。
(b) rationalally sequestered, and the volume determined: reasonable density takes into account the characteristics of the species. Second, when soil fertility is high and fertilization is reasonable, the appropriate density is high. In drought-prone areas without irrigation conditions, planting density is low。
Corn sowing is calculated by using seed volume (kg) = seed density x number of grains per cave x size. Emphasis should be placed on the development of maize seeding techniques and on improving the quality of seeding。
Determine the depth of seeding: the depth of seeding is typically 5-6 cm. In the better clay, it should be broadcast as low as 4-5 cm. The loose sandy border should be broadcast in depth, as appropriate, at 6-8 cm. If the soil is so humid that it is not suitable for in-depth broadcasting, the soil should be duly draught。
Post-broadcast repression: when the land is sown, it should be properly suppressed, when the drought takes place, and when the soil is overdone, not suppressed。
Fertilizers are appropriate: they provide sufficient nutrients for young children, contribute to the growth of the nursery period and increase resistance to adverse factors such as drought, low temperatures and disease. Fertilizers include small amounts of nitrogen, phosphorus, potassium and trace element fertilizer. Fertilizers are used to control their use and to isolate them from seedlings. Normal acre application of 5-8 kg ammonium phosphate。
If there is a shortage of seedlings, but there is no apparent disruption, it can fill the density by retaining two strains in close proximity to the shortage, when the seedling is established, or by planting more shaded crops, such as soybeans, potatoes, etc., in areas where the absence is severe. If only half of the seedlings are produced, they can be sowed as crops. When less than half the seedlings are produced, it is recommended that the seeds be rebroadcast。
Corn is warm and bright. The minimum temperature at which maize seeds sprouts is 6-7°c is extremely slow, and is vulnerable to bacteria and fungi in the soil. In order to avoid the effects of drought and poor pollination during high-temperature seasons, seeding occurs too early in spring and often takes 20 days from seeding to seedlings, often resulting in poor seedlings or poor seedlings, owing to low soil temperatures and unstable seasonal temperatures. Corn seeds are growing faster and better at temperatures ranging from 10 to 12°c, which are used as the lowest temperature indicator for seeding。
Corn seedlings are more resistant to hypothermia than they are to later growth. At low temperatures of 0°c, which do not freeze to death, at short-term temperatures of 2-3°c, the seedlings are damaged, and if the temperature rises quickly and is managed in a timely manner, the seedlings can return to normal growth in a few days. If cold conditions persist, the seedlings will freeze to death. The ability of maize to withstand mild frost when it grows between four and five leaves has gradually decreased. The slow growth of seedlings due to low temperatures is due to the slowing down of the metabolism of the roots, which completely stop when the temperature drops to 4-5°c. In agricultural production management, the introduction of seeding to increase the area of sunlight or membrane cover to improve soil temperature has been of great benefit in promoting root system development。
It's a legitimate secret
1. Expand line spacing. The shift to conventional lines is between 60 and 65 centimetres and between 120 and 130 centimetres (also equal to separate cultivation). The concentration of fertilizer and seedlings in 1/2 areas. Increasing density, with 60. 0 to 62,000 hectares of seedlings and 58,000 harvests。
2. Expand the distance. The number of harvests must range from 5. 8 to 60. 000, using a range of a distance of 80 cm or 100 cm and 60. 0 to 62 million in hectares, with the same standard being applied。
Scientific fertilizer
Organic and fertilizer combinations. The application of 80 cubic metres of high-quality farm fertilizer per hectare, which requires 75 per cent of n to be applied to the bottom, 25 per cent to be used as a fertilizer, with a depth of 15 to 20 centimetres (preventing the burning of urea at the root of the fertilizer and mixing into a urea relaxant), and the criteria for the application of fertilizer are to be reconciled according to local local conditions of water fertility. The standard is premised on 130 per cent of the constant usage (30 per cent increase)。
Prevention and control of pests and diseases
Seeds are packed with wrappers and selected with locally tailored distribution agents. Use must meet consumption standards to be effective. In order to prevent corn epidemiology, corn is sprayed once in the 6-8 leaf period。
Speculatory diseases are sprayed in the male corn with 75 per cent of 100-800 times more liquid or 50 per cent more than 500 times more in the male corn, at intervals of 10-15 days. When appropriate, bees are protected against corn and 50 per cent of octanophos-methyl or 50 per cent of methamidophos, 50 per cent of 1605,0. 5 kg of mixed sand and 50 kg of heart leaves are injected into the loudspeaker。
