How to carry out box cultivation of tulips?
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Tulip bulbs are divided into 5 grades: a bulb with a diameter of 3.5 cm or more is a grade 1 bulb, the flowering rate is above 95%; the diameter is 3.1 to 3.4 cm is a grade 2; the flowering rate is 60% to 80%; the diameter is 2.5 to 3.0 cm is 3 grades Diameter of 1.5 to 2.4 centimeters is 4; diameter is less than 1.4 centimeters. Under normal circumstances, the ball below level 3 must be planted for 1 year before it can form flowering cue balls. Therefore, it is common to choose quality and good grade 1 and 2 bulbs to cultivate tulip cut flowers. In order to facilitate the intensive production management and deployment of the flowering period, the greenhouse tulips are mostly used for box cultivation. The general cultivation box has a size of 60 cm 40 cm, a height of 18 cm, a depth of 8.5 cm in the box, and a minimum of 4.5 cm thick substrate below the bulb. In addition, the bottom of the box should have a certain permeability, the best two-layer gap is 10 to 11 centimeters, the box needs to be cleaned and disinfected prior to planting. The substrate is a mixture of peat and sand, pH 6.0 to 7.0, and the common formulation is: 50% to 60% black peat, 30% to 40% peat moss, mixed with 10% to 15% coarse sand, and no bacteria. Before the planting, it is necessary to pour water once, and how much water is used to hold the substrate in the hand, but water does not form a drop.