Let's take a look at the main points of fertilization for lettuce(cell trays). The fertilization problem and the fertilization principle are aimed at the application of organic fertilizer in lettuce production, the acid resistance of lettuce is very poor, the phenomenon of blind application of nitrogen fertilizer is prominent, the application of phosphorus and potassium fertilizer is insufficient(seed planting trays wholesale), the fertilization period and method are unreasonable, and the following fertilization principles are proposed.(cheap greenhouse plastic plant growing trays)
Lettuce is edible, delicious, and crispy(square grow pots). The topdressing is mainly based on nitrogen fertilizer, and the potassium fertilizer is rationally applied. For acidified vegetable gardens, acid soil conditioners such as lime should be applied in an appropriate amount, and fertilization should be combined with high-quality cultivation techniques, especially water management, to improve the efficiency of fertilizer and water use(18 cell plug trays supplier). After the shed is closed, keep 20-24 °C during the day and 12-14 °C during the night.
The production level is above 3500 kg/mu: nitrogen fertilizer (N) 16-18 kg/mu, phosphate fertilizer (P2O5) 7-9 kg/mu, potassium fertilizer (K2O) 8-10 kg/mu(cheap plastic plant pots bulk). The production level is 2500-3000 kg/mu: nitrogen fertilizer (N) 14-16 kg/mu, phosphate fertilizer (P2O5) 5-6 kg/mu, potash fertilizer (K2O) 6-8 kg/mu(20 cell plug trays supplier). The production level is 1500-2000 kg/mu: nitrogen fertilizer (N) 12-14 kg/mu, phosphate fertilizer (P2O5) 4-5 kg/mu, potash fertilizer (K2O) 5-6 kg/mu.
(cheap greenhouse plastic plant growing trays)It is a popular vegetable(nursery plant pots). Lettuce can not only stimulate the secretion of digestive enzymes, increase appetite, but also promote the peristalsis of the human intestinal wall and prevent constipation. Today, organic fertilizers are added, nitrogen fertilizers are controlled, phosphorus and potassium fertilizers are added, and fertilizer distribution methods are based on base and chasing(72 cell seed trays wholesale). The base fertilizer is applied once to the decomposed farmyard manure 1000-1500 kg/mu.
When the pH of the vegetable garden soil is less than 5, 150-200 kg of quicklime is applied per acre(large plastic terracotta pots). Nitrogen fertilizers are all topdressed, according to 20%, 30% and 50% in the lettuce transplanting greening period, lettuce lettuce stage and lettuce rapid growth early in three times, potassium fertilizer 40%-50% base application(50 cell seed trays wholesale), the rest in lettuce rosette In the early stage of rapid growth and in the early stage of rapid growth, the phosphate fertilizer is applied as a base fertilizer or a hole.(cheap greenhouse plastic plant growing trays)
Therefore, it is not conducive to the growth of leek seedlings after colonization(plastic plant pots wholesale suppliers). Colonization method: cut short roots (only 2-3 cm), cut short tips (leaf leaves 10 cm long). In the raft, the row spacing is 18-20 cm, the hole spacing is 10 cm, and 7-10 plants per hole are planted, which is suitable for barley. Ditch by line spacing 30-36 cm, ditch depth 16-20 cm, hole distance 16 cm(50 cell plant trays bulk), 20-30 seedlings per hole, suitable for the production of softened amaranth, the cultivation depth is suitable for burying the tiller.
Temperature management: Keep 16-20 °C during the day(plastic plant trays wholesale), and the temperature in the shed exceeds 24 °C to release air and humidity. In winter, small arch shed cultivation should be strengthened and kept at 6 °C at night. Fertilizer management: After planting, when new roots and new leaves appear, they can be topdressed with water, 10-15 kg of urea per acre(gallon pot), and 4 years of seedlings, to control water and prevent cropping, and strengthen cultivating and weeding.