After entering the spring, how the onion is managed scientifically has become a common concern for many growers. This reporter interviewed Yang Ling Qin Hongbao Onion Seed Co., Ltd. breeder and senior agronomist Ron Hou. Ron later said that the key to the scientific management of onion cultivation is to apply scientific fertilization. After spring returning to green, it is necessary to perform the first fertilization to supplement the growth of the onion root system and lay the foundation for the vigorous growth of the on-ground part. Fertilization should be dominated by organic fertilizers.
Ron later said that when the onion plants grow to 8-10 true leaves and the bulbs begin to become hypertrophic, they begin to use the priming fertilizer and apply them 2-3 times. Each mus of land can be applied with 10-20 kg of ammonium sulfate to bulbs. The mid-expansion period is the focus of fertilization, and the amount of fertilizer should be large. When the bulb begins to swell, do not apply too much nitrogen to prevent the plant from "greediness." During bulb expansion, potassium sulfate should be added during fertilization at an amount of 5-10 kilograms per mu, because the lack of potassium on the onion will result in poor storage stability.
In addition, timely watering, Ron said after the onset of planting onions before the winter, spring water poured back to Qingshui, pouring back to Qingshui to be timely, premature watering will reduce the temperature of the soil, is not conducive to the growth of onions, too late will also inhibit The growth of the plants resulted in the dry tip of the leaves.
When the onion matures ten days ago, it is necessary to control the length of seedlings and seedlings according to the soil, climate, and plant growth conditions. When the sandy soil or the climate is dry, it is necessary to appropriately shorten the seedling stage; the clay soil, the low-lying land, It is necessary to appropriately extend the seedling stage during the rainy season. The purpose is to promote the expansion of onion growth into bulbs, which generally takes about 10 days. It is generally believed that the mature tubular leaves of onions turn dark green, the leaves are hypertrophied, the waxiness of the leaves is increased, and the color of the heart leaves is deepened, which is the sign of the end of the seedlings in this period. After the seedlings are planted, they are generally poured with water every 5 days to promote the rapid expansion of the bulbs. When the plants in the field are partially lodged, watering is stopped to avoid storage after the bulbs are harvested.
Xinghua Jiahe Foods Co., Ltd. , https://www.jiahefoods.com