Mixed sunflower planting techniques. By season, spring, summer and winter. 1. The spring seasons for the broadcasting of hybrid sunflowers vary from region to region. If hebei is from the beginning of march to 10 may, liaoning is from 20 april to 10 may, inner mongolia is from 15 april to 10 may, shanxi is from 14 april to 25 april and jilin is from 15 to 25 may. In areas with more precipitation, it's not too late for spring. The benefits of early broadcasting are as follows: the low temperatures and early springs of 2 millimetres are conducive to cucumbering, to rooting down, and to increasing resilience to drought. Three flower seasons before the hot, wet rainy season, pollination is good, disease is light, empty shell pellets are low. Long-term light and good temperature conditions. It's very early in the middle of the day in areas with short frost-free periods, so as to avoid the hazards of early frost. But it's not appropriate to broadcast early in mountain drylands, otherwise the whole birth of sunflowers is spent in dry conditions with little water and little rain, with very low yields. These areas should be aired at the appropriate late hours, and should be connected to local rain before and after the fall, to meet the water requirements of the aura. 2. Summer broadcasts shall first consider whether local climatic conditions meet the requirements of the birth period of approximately 90 days after the sowing. In light and less temperature, seeding should be done as early as possible, so as not to reduce yields and quality due to poor maturity. In areas of light and higher temperatures, sowing in the summer should take place at an appropriate late stage, so that the flowering and slurry seasons can avoid excessive temperature and humidity in order to pollute and avoid disease. 3. Winter sowing is the planting of seeds in the soil, which will occur in the coming spring when the temperature and moisture are appropriate. The advantage of winter broadcasting is to pre-empt the spring planting operation to the winter, thereby reducing the loss of soil moisture in the spring, which is conducive to pre-plant growth. As a result, winter broadcasts are more suitable for arid, busy or relatively short periods of spring farming. Winter broadcasts should take place in the morning and afternoon when the soil is frozen and the temperature is 0°c4°c, so as to prevent the seeds from appearing immediately after the planting. According to a study conducted by the agricultural institute of shanxi province, winter broadcasts increased production by 11. 7 per cent, by 4. 3 per cent and by 3. 8 per cent. According to tests conducted at the faculty of agriculture in liaoning province, the seeds planted in the second year of the winter spring sprung normally, with the flowering and maturitying period 57 days earlier than normal spring. Seeding is determined on the basis of seed sprouts, field seedlings and field losses. The average field loss rate can be calculated at 10 per cent of the planned number of plants. For example, the number of acreages per acre is planned at 4000, with a seed loss rate of 20 per cent, a sprout rate of 98 per cent, and the number of seed seedings per acre is: 4000+ (400020 per cent) + (40002 per cent) = 4880, if the seed weighs 80 g in thousands, with a seed seeding rate of 48800 x 801,000; 390. 4 g in acre. On hand-on-demand, the crop size of the acre is around 350 grams when using a selected packaged seed and a single double-particle cutout. 5. Method 1 mechanical seeding. A small adaptation of corn, soybean sowing machines can be used to sow sunflower. In cases where the land is in good condition and has high growth rates, seeding may take the form of provincial, provincial and time-saving precision seeds. 2 o'clock. A ditch or cave is followed by fattening of the farmer and then seeding. Land cover depth is appropriate at 35 cm. The seeding is too shallow, it's prone to top-shell outbursts, it's sprouting when it's bad. In the case of drought, the depth of seeding should be 58 centimetres. When the lumbers mature towards the south-east, using the mechanically harvested fields, they grow lumbers that are more mechanically and physically. Patent queries
