"The first frost pulled the onions, but it was not empty." Why are onions empty after the first frost?

The first frost has no onions, and the longer it is, the more empty it is. This is many years of planting experience. The harvested onions can be stored by the following seven storage methods.

After harvesting, the shallots stored in the ditch were dried in the sun for several hours, and the soil at the roots, diseased plants and injured plants were removed, and 65,438+0 bundles of 65,438+00 kg were piled up in a ventilated place for 6 days, so that the water on the surface of the shallots was dried in the shade. Choose a cool and ventilated place to dig trenches, with a depth of 33 cm, a width of 150 cm, a length depending on the storage capacity, and a trench spacing of 50~70 cm. If the humidity at the bottom of the ditch is low, you can water it 1 time. After all the water is soaked, onions are planted in the ditch one by one. Cover the last bundle of leaves on the upper part of the previous bundle of leaves. It is best to insert a circle of 30~35 cm long corn stalks around the onion to facilitate ventilation and heat dissipation, and bury the onion with soil. Before the arrival of severe cold, it can be stored until March of the following year by covering it with straw or straw.

Burying method: put the dried, selected and tied green onions in a shady corner or room, spread a layer of wet soil at the bottom, and bury the surrounding green onions to the leaves of green onions. If it is buried outdoors, it can be covered with grass before the cold comes.

Dry storage method: dry the harvested green onions for 2-3 days, knock off the soil at the roots, remove the diseased and injured plants, tie the onion stalks into 1 kg, and place them in a dry and ventilated place in a single layer. Pay attention to heat and moisture protection. br/>；

Shelving method bundles dried and selected scallions into 5 kg scallions, and puts them on the storage rack in a single layer. If stacked, it is necessary to leave vents to avoid rot and deterioration.

False planting storage method: dig 1 shallow pits in the yard or field, pick the harvested green onions and bundle them into small bundles. In the pit, bury the onion roots and green onions with soil, and then water them.