How to transplant broccoli? A detailed explanation of the key transplanting techniques

Broccoli seedlings can be transplanted into open ground when they are 1 month old (generally at the three-true-leaves-and-one-heart stage). Plant two rows per bed, with a row spacing of 40cm and a plant spacing of 35cm, and no more than 3000 plants per mu. When transplanting, first make holes on the bed surface according to the plant and row spacing, then carefully remove the nutrient pot, place the seedling clod into the hole and firm the soil around it, with the depth such that the cotyledons are just emerging above the ground. After transplanting, water thoroughly with the transplanting water. Cover with plastic film on top to retain moisture and warmth. After 3 days, take the seedlings out through the film, and seal the film holes tightly with soil.