The transplantation of seedlings is a key program of onion planting, what should be paid attention to in the process of onion transplantation?

Scallion is an indispensable condiment on the dinner table of the Chinese people, and the planting range in China is also very wide. As the saying goes: seedling good seven points to harvest, good seedling quality is the premise of high quality and high yield onion, but high quality onion seedling must be coupled with appropriate planting management techniques, in order to make the excellent quality potential to be brought into full play.

The transplantation of seedlings is an important part of the onion production and planting process, at this stage, we operators if we grasp the scientific method, we can create a better base for the good growth and production of onion later, on the other hand, if the way is not appropriate, it is possible to lay hidden dangers for the growth of the later stage, to set up obstacles for high-yield and high-quality planting. Specifically, in the onion transplanting process, there are "4 afraid", we need to pay extra attention to vegetable farmers.

1 "afraid of" plot or row to the selection of improper

from the onion itself, it is a relatively weak rhizome, belonging to the typical string-like root beard, and there is no significant main stem, so in the process of growth, the rhizome under the work of the poorer ability to tie. Therefore, the absorption of nutrients and water in the soil are more shallow, if the soil type is too sticky, then the soil layer of the permeability is relatively poor, the rhizome in the growth process often get O2 is relatively speaking not too abundant, so it is not conducive to the growth of onion rhizome from the soil digestion and absorption and water nutrients, which will delay the onion's growth rate and the amount of production.

In addition, it is in the process of onion planting, to choose a well-drained plot of land, due to the onion rhizome weak and temperamental strong, intolerant of waterlogging. Therefore, in the selection of small plots of land, to take into account the beneficial drainage pipe, while planting the rows up, to be consistent with the incline, so that in the more precipitation is the time, but also can immediately drain the field of water out of the field.

In general, the first to choose the better permeability of the soil or sandy loam planting, second, planting plots and rows of clear time to take into account the drainage pipe convenient.

2 "fear" onion transplanting process is not graded

It is well known that in the onion seedling pre-seedling process, because of individual differences in seed and pre-seedling process of water nutrients are also different, coupled with the relative density of planting these lead to the cause of the conclusion is usually caused by the onion seedling is usually in the pseudostem thickness, and plant height on these have a different. The plant's height and these there is a certain gap, and even this kind of difference will continue to be relatively large.

After the onion seedlings are planted, there will be a significant difference in growth rate, if the same fertilizer and watering method is chosen for management, so the onion products obtained at a later stage will have a big difference between each other in terms of individuality. Therefore, the ungraded seedling transplantation can produce a big trouble for the management method, and it is not beneficial to the maintenance of the economic benefits of high-yield and high-efficiency planting.

Before transplanting onion seedlings, onions are graded and generally divided into two to three levels according to plant size. After the graded planting of onions can be differentiated management methods, on the rise of the weaker seedlings can enhance the fertilizer management methods to catch up with the rise of the more robust seedlings, so that the final onion to maintain a better degree of proportionality, which is high-yield, high-quality and cost-effective planting can lay a good foundation.

3 "fear" crop

Onion belongs to the crop is not resistant to crop, crop many years of planting onion plots, we farmers friends are often found, onion will be weaker, pests and diseases are significantly more serious, and the onion's own pungent flavor will be shallow, this is directly related to the obstacles caused by crop, therefore, in the choice of When planting green onions, try to choose a plot of land that has not been planted with green onions for more than 2 years.

If you can't rotate the crops immediately due to the lack of land resources, then you should increase the demand for organic fertilizers during the cultivation process, and increase the application of bacterial fertilizers such as Bacillus subtilis and Bacillus subtilis, in order to reduce the negative impact caused by the continuous cropping disorder by y loosening the soil.

4 "afraid" of the bottom of the fertilizer is not enough

Onion growing period is very long, the production is relatively high, so in the process of fertilizer to enhance the bottom of the fertilizer application, to ensure high yield, high-quality planting, can bring a good fertilizer base. If the bottom fertilizer supply is insufficient, then, in the later stages of growth is prone to de-fertilization, and jeopardize the onion pseudostem neatness and its final yield and storage resistance.

For medium fertility plots, in the onion fertilizer, on 1 mu of the bottom fertilizer, fermented organic fertilizer should be maintained at 5000kg. At the same time apply peanut bran about 200 to 300 kg. Add the appropriate amount of fertilizer. 1 mu of diammonium phosphate about 40kg, ammonium sulfate about 40-50kg, nowadays the production of manufacturing on the base fertilizer to urea solution as the dominant, but the base fertilizer in the urea solution demand is not suitable for a great deal, or else it is easy to lead to the seedling exuberant growth, 1 acre of land demand for the 30-40kg is most appropriate, and later on according to the fertilizer to enhance the supplement.

It should be noted in particular that the onion is a typical sulfur crop (pungent taste is due to the volatilization of sulfur-containing compounds), therefore, in the choice of types of fertilizer, should be sulfuric acid-type fertilizers, and try to avoid chlorine-containing fertilizers.