Corn is the main food crop planted by farmers, but in rural areas, food is basically eaten by the sky. At any time, you will face natural disasters. If you want to be free from drought, you will not be affected by water. In many places in China, corn is widely planted, but the output has not been so high. Is there no way to remedy it? Let's take a look at the small series below.
From the current season of corn planting, with the seasonal migration, corn will usher in a hot and humid rainy season. During the rainy season, when encountering heavy winds and heavy rains, the prolonged corn plants are prone to lodging due to underdeveloped roots, shallow depth of soil, slender internodes, and thin stems. Serious production cuts and economic losses.
Therefore, for the overgrown corn should be controlled, on the one hand dwarf plant height, shorten the stem section, reduce the ear position, on the other hand thick stems, promote strong roots and make the roots more roots, deep roots, It enhances the weather resistance and improves the lodging resistance. At the same time, the seeds are full and full, and the yield is increased. The most common and most common method of corn control is drug control.
Today, let's talk to you about the corn control! The contents include: 1 Which corn fields should be controlled, and which corn fields are not suitable for controlling? 2 What time is the best time to control corn? 3 Which drugs are best for corn control? 4 What do you need to pay attention to when controlling corn?
1. Corn plots suitable for controlling and not suitable for controlling corn
Maize control is determined flexibly according to the characteristics of maize variety, plant height, straw thickness, softness, ear height and lodging resistance. Maize control is suitable for varieties with thin stems, high plant height, high earing area and poor resistance to wind damage. After treatment, it can dwarf plant ear position, thick stalk, strong root system, prevent lodging and reduce empty stalk baldness. On the basis of, increase the yield; for the varieties with thick stems, low plant type and strong wind-resistance ability, it is not recommended to prevent the normal growth of the plants after chemical control, resulting in low stalks and poor ventilation and light transmission. Production and output are reduced. In addition, land with sufficient fertilizer and good land and good growing land is suitable for controlling the land. The land with insufficient fertility, weak growth, lack of seedling replanting and high ground drought should not be controlled.
Second, what time is the best time to control corn?
Premature corn control (before 6 leaves) is not conducive to plant too short and over-ear development is inhibited, too late control (after 12 leaves) will cause excessive shortening of stems 4-5, pollination of corn female flowers, poor It is easy to cause different degrees of production cuts.
The best time to control corn is three criteria: 16-10 leaf stage, jointing stage, and plant height up to knee height.
Third, which drugs are best for corn control?
Paclobutrazol, uniconazole, chlormequat, ketamine, ethephon and other drugs that are commonly sold in the agricultural resources market can be used, and they all have good control effects, and the price is not expensive.
Fourth, what do you need to pay attention to when controlling corn?
1. In the concentration and dosage of spray, it should be strictly used according to the instructions of the drugs used. It is better to use less and less, and it is not allowed to increase the dosage and concentration at will, otherwise it will cause serious reduction or even rejection.
2, when corn control Wang spray, should follow the principle of high spray height and low spray, spray should be uniform and can not be re-sprayed, the drug can be swept through the leaves of the plant once, can not be sprayed multiple times, or the entire plant can not be sprayed .
3. When spraying, if the temperature is high and the precipitation is low, the water consumption should be increased, the dosage should be reduced, and the amount of precipitation should be increased. If the rain occurs within 6 hours after the medication, the dose can be halved and then sprayed once again after the weather turns better.
4. Land plots with poor potential, low plant height, dry soil and high terrain should not be sprayed.
Corn planting wants high yield, then controlling Wang is very important. The above is the introduction of the best timing and medication for corn control, and I hope to help farmers.
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