With the popularity of hybrid rice, more and more crops have hybrid technology, and hybrid corn is one of them. Hybrid corn is known as the king of hybridization. It is easy to grow, and it is easy to have high-yield harvest. The potential for increasing yield is also great. So how can high-yield hybrid corn be produced? The key is to look at the following technologies.
First, the variety should choose high-yield and healthy seeds: net for corn demonstration and promotion of moderately mature, high-yield and multi-resistant mid-maturing varieties Changyu 13, Liansan 3, Qiangsheng 10 and so on. If the intercropping is done, choose a plant with a compact plant type and a medium maturity.
Second, the land preparation can not be sloppy: the spring corn land is well ploughed and sun-dried before the year, and it is not too late to turn over the winter before the sowing, so that the soil is loose and fine. Grab the sunny day before the broadcast and then divide the land into good compartments, and open the main ditch and the ditch according to the drainage direction of the land. The no-tillage spring and autumn corn must be done well before weaving. During the growth period, the three ditch should be cleaned up in time to eliminate the accumulated water.
Third, do a good seeding technology: a seedling is the key to high yield of corn. First, about 10 days before the broadcast, the enemy rats were given 1-2 times of uniform rodent control with the enemy sodium salt. The second is to promote seed coating technology, soaking seeds and germination sowing, seedling transplanting technology and other technologies. The third is to use the anti-sweeping, enemy killing and spraying underground pests such as tigers.
4. Reasonable close planting: The sowing method is recommended to be wide and narrow, with a width of 2.1 feet and a narrow line of 1.5 feet. The plant spacing is determined according to the variety. During the three-leaf period, seedlings and cultivating and weeding, five-leaf stage seedlings, seedling transplanting should be transplanted in front of the two leaves and one heart.
V. Scientific fertilization: Corn fertilization should master the principle of “basic fertilizer and organic fertilizer, supplemented by fertilizer and fertilizer.†The base fertilizer accounts for about 60% of the total fertilization amount, and the top dressing should be applied 2-3 times.
Sixth, do a good job of pest control: after sowing to the seedlings before the use of corn special herbicide to control weeds, seedlings to control the tiger, the big bell mouth with "enemy kill" or avermectin water 60-70 The kilograms of squirting leaves are used to control corn borer, and the mites are controlled by imidacloprid during the tasseling period. When about 30% of the plants in the field appear to have sheath blight, timely injection of Jinggangmycin to prevent and cure.
Seven, artificial emasculation and auxiliary pollination: the early stage of corn tasseling, can reduce nutrient consumption. You can remove one line every two lines, or you can go to the next line. Artificial assisted pollination is beneficial to increase the seed setting rate and increase production.
Eight, timely harvest: When the corn is fully mature, harvest can increase production by about 10%. Specific time: all the leaves are yellow-white, the grain becomes hard and shiny, and when it is loose, it is suitable for harvesting.
If you do the above, the possibility of high yield of hybrid corn will increase greatly, mainly in the cultivation process, and every link can not be sloppy.
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