Scallion head harvest time
Scallion head from seedling to maturity, it takes 8-9 months, in the Dragon Boat Festival can be harvested around the time, the scallion head is usually harvested in May-June, until the scallion head leaves from the bottom to the top of the slow yellow, the pseudostem soft, bulb stops the degree of expansion, into the dormant, that is, the need for timely harvesting.
Scallion head origin
Scallion head is native to West Asia, growing in all parts of the world, China's main production in Fengxian County, Jiuquan County, Wuwei County, Jinxiang County, Shangxian, Pindu County, Yutai County, Xichang County, Dongchuan County, Yuanmou County, etc., of course, Inner Mongolia, Xinjiang, Jilin, Heilongjiang and other places are also grown, the vast majority of the scallion head in the fall planting, and then harvested in the spring of the second year.
These are the most common onions in the world.
Scallion planting time and points
The most suitable time to plant scallion is in early September, usually by sowing, the temperature is maintained between 15-25 degrees Celsius, choose a mixture of soil containing vermiculite, soil, sand, humus, soak the seeds in hot water for 3 to 4 hours before sowing, and knead to remove the waxy layer.
When sowing onion, you need to evenly spread the seeds in the soil, keep the distance between the seeds is 10 centimeters, covered with a layer of 0.8 centimeters of fine gravel sand, compacted under the soil, watered once in time, watering can not be watered through, wait until the seeds germinate and then a second time to water.
Fertilizing the onion, you need to wait until the height of the plant grows to 15-20 cm, and then apply a small amount of well-rotted composite fertilizer or farmyard manure, about a month later, you can be planted, before planting can be at the bottom of the soil, applying well-rotted farmyard manure, or dilute cake fertilizer water.