Field management technology of sunflower

The flower language of sunflower is faith, brilliance, arrogance, loyalty, it chases the sun, has its unique charm, is also very common in our daily life. Like sunflower oil and sunflower seeds in shopping malls are the products of sunflowers. Large areas of sunflower planting is also a very beautiful scenery, so when planting sunflowers, how do we need field management to improve its yield and quality? Let's take a look at it next.

1. Ploughing and weeding

After sunflower colonization and survival, in order to promote the growth of sunflower, we need to ploughing and weeding frequently, because weeds are very harmful to it. During the growth period of sunflowers, it is generally necessary to carry out three times of ploughing and weeding, at the same time, we should pay attention to the depth of ploughing, not to hurt the roots, but to ensure the permeability of the soil. The first intertillage is usually within a week after planting, the second is usually at the initial stage of seedling growth, and the third is before ridge closure.

2. Water and fertilizer management

During the whole growing period, the maximum water demand of sunflower is at budding, when its water demand can stand at half of the total water. In addition, there must be no shortage of water during this period, otherwise the output and quality of sunflowers will be seriously damaged. The second is that sunflowers in the period from flowering to maturity, the demand for water is also relatively large, to keep the soil moist. In the early growth stage of sunflower, we mainly use nitrogen fertilizer. After it blossoms, we mainly use potash fertilizer, and use it with foliar fertilizer. Of course, it also needs to cooperate with the use of boron fertilizer, zinc fertilizer and other micro-fertilizers, so that the effect of topdressing is better.

3. Branch and leaf finishing

Some varieties of sunflowers will bifurcate when they grow to a certain extent, which will increase the water demand and nutrient consumption of sunflowers, so we need to get rid of them in time. But one thing to pay attention to is to fight as soon as possible, not until it is big, which will increase the damage to the plant. Finally, we also need to remove the old leaves, dead leaves and diseased leaves at the bottom of the sunflower plant, which can improve the permeability of the field, reduce nutrient consumption and avoid diseases and insect pests.

4. Auxiliary pollination

In order to improve the seed setting rate, pollination success rate and yield of sunflower, we also need artificial pollination when necessary. First of all, we can release bees artificially for pollination and arrange the colony scientifically. The second is the use of division collection, and then contact pollination. When pollinating, we should pay attention to that it is best to carry out pollination from 9 a.m. to 11:00 in the morning. If the planting area is too large and pollination is not completed in the morning, you have to wait until after 3 p.m., and the noon time is not suitable for pollination. The success rate is extremely low.

5. Disease and pest control

The management of diseases and insect pests is also worthy of our attention in the process of sunflower planting. Among them, the most important disease is the harm of rust and Sclerotinia sclerotiorum to sunflower. We can use mancozeb wettable powder plus triadimefon wettable powder and methyl thiophanate wettable powder to control it, at least twice, usually every ten days or so. There is to pay attention to beetles, beetles, cotton bollworm, borer and other pests of the harm to sunflowers, you can use trichlorfon crystals or pyrethroid insecticides for control.

Sunflower field management is actually very simple, we just need to follow the above management process is basically almost. Due to the limited energy of the editor, some of the contents are relatively simple, but if you need it, you can leave a message for the editor.