1 The on-planting period of the onion planting period is not strict, and Shandong green onions are required to be planted in Daejeon for 130 days to meet the needs of high quality and high yield. It is generally required that there be about 70 days of vigorous growth before the defrost, and the plants can grow fully. Most of northern China is planted from early June to early July. The colonization was too early, the onion sprouts were small, and the growth was slow; the colonization was too late, the seedlings were too long, the seedlings were difficult to plant, and they were easy to fall. And the seedling period coincides with high temperature and rain, susceptible to diseases, water in the fields, and easy to kill. In general, planting should be carried out as early as possible during the appropriate period. When the rainy season and high temperature come, the onion seedlings have returned to green. When the fall turns cold, the plants have formed a strong root system, which can quickly turn into a vigorous growth period. The scallion products of Shandong are smashed into wheat. After wheat is harvested, it should be immediately planted on the site. Otherwise, it will cause difficulties in planting even when it is cloudy. The smaller chicken leg onion can be planted more than 10 days later.
2 Land preparation Onion planting sites Before planting crops, rice fields and vegetable fields that have not been planted with onion and garlic crops within 3 years are suitable. Shandong is mostly used for wheat fields. Onion bogey is repeated. The site should be selected for high dryness, deep soil, convenient irrigation and drainage, and fertility of land. Before the planting, apply enough organic fertilizer 75000-100000 kg per hectare. The north-south gully receives light evenly, and it can reduce the fall of the north to the strong wind during autumn and winter. Planting period close to the rainy season, no need to plough too deep in the cultivation of onion, because the soil is loose, easy to ditch when planting ditch, and easy to water seedlings. It can be used to remove the weeds and clear the weeds, that is, to open the ditch by row spacing, apply organic fertilizer on the bottom of the ditch, and grind the bottom of the ditch to mix the fertilizer and the soil. The onion of green onions is wheat, and scallions from Shandong province are mostly planted in rows between wheat rows. There is no time to plow the land. In order to loosen the soil, after the wheat is harvested, a deep plowing soil conditioner is sprayed, 2200 grams per 667 square meters, 100 kg of water is added, and the ground is sprayed. 20 days after spraying, the depth of 50-70 cm soil is loose and transparent, which is conducive to the growth of roots.
3 Density and Depth of Onion Cone Cone-shaped erect, with few leaves per plant, suitable for dense planting. However, in order to cultivate soil, a large row spacing is needed. Therefore, the purpose of dense planting can only be achieved by narrowing the plant spacing. Row spacing is the distance between trenches, which varies according to the variety and product standards. The narrow-line shallow ditch is suitable for the short onion-white variety, and the wide-ranging deep ditch is required for the long-onion variety. Reasonable group structure is not only relying on groups to win total production, but also depends on the quality of individual plants; when the population density within a unit area increases to a certain extent, the increase in yield is significant, and if the density is increased, the total output will not increase much, but the single plant Heavy reduction is significant and quality deteriorates. In the same way, in a certain density range, the density decreases, the individual plant weight increases, and the quality increases; but if the density continues to decrease, the plant weight no longer increases, and the total production drops sharply instead. Therefore, when planting, it is necessary to select a suitable density with a higher total output under the premise of ensuring quality. In general, chicken onions require 6 inches from 5-6 centimeters and 50-55 centimeters from 330,000 to 360,000 trees per hectare. The ditch is 8-10 centimeters deep. In the future, the fresh weight of each plant can reach 130-180 grams. -30 cm. The spacing of Changbai shallots is 5-6 cm (70-80 cm), 255,000-300,000 stubs per hectare, and trenches are 15-20 cm deep. In the future, the fresh weight of each plant can reach 250 grams or more, and the light blue can be more than 40 cm long. The density of short onions is between the two.
4 seedlings graded preparation before raising seedlings transplanting, nursery seedlings, such as too dry, should be poured first water, to ensure proper wet and dry lifting. When lifting the seedlings, try to retain the complete root system, reduce the damage, shake the soil, remove sick, weak, disabled seedlings and seedlings. According to the size and length of onion seedlings into 3 levels: 60 cm above the first seedling height, single plant weight more than 60 grams, more than 6 leaves, light blue and white long 30 centimeters, more than 1.5 centimeters thick; secondary seedlings about 50 cm high, Plant weight is about 40 grams, 5 leaves, 25 cm long white, thick 1 cm; more than 3 seedlings or other external seedlings. The size of the seedlings should be planted separately, large seedlings should be slightly thin, seedlings slightly dense, 3 seedlings and other external seedlings as much as possible abandoned. With one or two seedlings planted with onion shoots of 9000-15,000 kg per hectare, it is easy to obtain high yields only if the onion shoot weight is more than 7500 kg. When the seedlings are raised, they must be transported along with the plane and transported along with the plants so that the seedlings will grow faster and grow faster. The onion seedlings avoid being stacked or exposed for a long time. The onion seedlings that can not be used on that day should be placed in a cool place to prevent fever, yellowish rot or decay.
5 Planting methods Onions are planted with rows of onions and onions. The onion method is applied to the chicken onions and short onions. The row onion method is to place onion seedlings along the steeper side of the trench wall by plant spacing. The onion roots are pressed slightly into the loose soil at the bottom of the trench. The earthworms are then taken from the other side of the trenches and buried in the outer leaves of the onion pods. At the office, use down-to-earth and watering along the ditch. This method is quick to plant and uses less labor, but the lower part of the light blue is not straight, affecting the appearance quality. Plug onion method applies to Changbai green onion varieties, the method is to put the onion base at the planting site, with the stick on the bottom of the onion to press the root base vertical plug, onion seedlings with the stick into the trench in the loose soil. First watering, then water penetration is plugged into "water plug"; first insert planting, watering after the "dry plug." When the onion is inserted, the direction of the onion leaves should be parallel to the ditch, so that the leaves are less damaged when the field is managed. In order to cultivate the depth of green onion, it is necessary to master the principle of unequal alignment. That is, the heart of the onion shoots should be 7-10 cm above the ditch. After being too shallow, it is easy to fall down, and it is not convenient to cultivate the soil; if it is too deep, the seedlings will be inconvenienced, suffocated, and even rotted.
Freeze-dried powder is a sterile powder injection obtained by freezing the liquid medicine into a solid state in a sterile environment, and subliming and drying the water in a vacuum. Freeze-dried powder is composed of a bottle of high-purity and high-active biological protein freeze-dried powder and a high-purity liquid essence. When using, it needs to be connected with a patented vacuum to reconstitute the freeze-dried powder and the essence to activate the biological protein activity.
Freeze Dried Fruit Powder,Strawberry Powder,Freeze Dried Powder,Raspberry Powder
YT(Xi'an) Biochem Co., Ltd. , https://www.ytlinkherb.com