Planting hollow cabbage can be carried out in May each year, and greenhouse planting can be carried out all year round. Planting method: choose fertile, breathable sandy loam soil to plant, apply some organic fertilizer; choose the right seeds, soak in warm water before sowing, wrap it into moist gauze, and then put it in the environment of 30 ℃ to germinate.
Hollow cabbage open field direct seeding using strip sowing or spot sowing, row spacing 30 cm ~ 35 cm. Spot sowing hole spacing 15 cm ~ 20 cm, each hole point seed 2, 3; live mu seed amount of about 10 kg, when the seedling height of 3 cm or so can be divided into batches of inter-seedling, and finally planted at a distance of 15 cm ~ 20 cm.
The seed coat of cabbage seed is thick and hard, slow to absorb water. Early spring temperatures are low, the emergence of seedlings is slow. In case of low temperature and rainy weather, it is easy to cause rotten seeds, so it should be soaked before sowing to promote germination, after sowing, cover the fine soil 1 cm thick, in order to facilitate the seed germination and rooting, and cover the plastic film to raise the temperature and heat preservation, to be withdrawn from touching the seedling after the emergence of the soil.
Holloway planting notes:
1, temperature control
Holloway's growth temperature span is very high, high temperature resistance does not tolerate low temperatures, the warmth of the environment grows rapidly. General temperature above 15 degrees Celsius seeds will sprout, if the temperature is not stable, it is best to choose to start sowing above 18 ℃. Temperatures above 35 ℃ or below 9 ℃ plant growth is slow, aging accelerated, increased fiber, poor taste.
2, keep wet
Hollow cabbage belongs to the leafy vegetables, summer growth is the most vigorous, so its transpiration is higher than the general vegetables, in order not to let the hollow cabbage aging accelerate, the fiber increases, affecting the quality of the hollow cabbage, the hollow cabbage during the growth period should be more watering.