Before planting broccoli, it is best to use it as a non-cruciferous crop such as rice, melons and beans. When plowing acidic soil, 100 kilograms of slaked lime should be used. Paddy fields should be drained early. After plowing, deep furrows should be opened for high plowing furrows. Broccoli does not tolerate waterlogging, and the field should not be waterlogged. In order to increase the planting density of export broccoli, a wide border with a width of 1.7-1.8 meters is used, which is connected to the furrow. Sufficient base fertilizer: base fertilizer more organic fertilizer, phosphorus and potassium fertilizer, rotting organic fertilizer 1500-2000 kg, 50 kg of calcium superphosphate, potassium sulfate 10 kg / mu, such as paddy fields plus urea 7-8 kg, high mountainous areas of paddy fields plus calcium and magnesium phosphate fertilizer 50 kg, boron deficient fields plus borax 1.5 kg.
Broccoli needs a lot of water during the growing period, but there should be no stagnant water when watering, and the soil water content should be kept at 75%. The main fertilizer period of broccoli is the pre-growth and shooting period, during which more nitrogen, phosphorus and potassium fertilizer should be applied, mainly nitrogen fertilizer. Plowing and weeding: Plowing and weeding is one of the key technical points in the planting process. Fertilizing and weeding should be carried out at the same time during the growth of broccoli. The purpose of mid-tillage weeding is to improve the permeability of the soil, so that the broccoli can better absorb the soil nutrients, thus making the broccoli grow more vigorously. However, it should be noted that mid-tillage is not suitable after bank closure. Pests and diseases treatment: The main pests of broccoli are astragalus, little cabbage moth, cabbage greenfly and aphids. Drug treatment should be carried out in time after the occurrence of pests, and this kind of pests can basically be treated with drugs such as 25% snapdragon 2,000 times liquid and bromoxynil 700 times liquid. However, broccoli has strong disease resistance and is generally free of pests and diseases.
Planting timeMany people think that broccoli can only be planted in one season, but this is not the case. Broccoli can be planted in two seasons, in March and July.Start planting in mid-March and you can usually harvest in early June; if you plant in early July, you can harvest in mid-September. Since broccoli prefers warmer, cooler weather, harvests are usually better in March than in July. Broccoli Growing Methods Land broccoli requires little soil quality, but prefers sandy soils as permeable soils are preferred, and sandy soils will increase broccoli production to some extent. The soil should be composted in advance and no weeds should remain in the soil after cleaning. The location of the land should be high, with easy drainage, and the soil should be kept semi-moist, which will enhance the permeability of the soil and make it slightly acidic.
Lighting temperature broccoli is very demanding of sunlight, good direct sunlight can promote the denseness of the flower bulb. However, if the temperature is too high, shade is required. Generally speaking, controlling the temperature at 25℃ is more suitable for the growth of broccoli. It is best to control the direct exposure time to about 6 hours. When the temperature exceeds 35℃, pay attention to heat protection and cooling, otherwise it is easy to sunburn the broccoli. Fertilizer and water management Due to the rapid growth of broccoli, it requires a lot of fertilizer and water, usually divided into 3-4 times. You need to fertilize once a week after the seedlings emerge, then a second time after the flower bulbs grow out, and then you need to look at the growth of the next two times, two times if it's not ideal, and one time if it's ideal. Less water is needed in the early stages, so take care to keep the flower bulbs moist after they grow. It's usually best to irrigate directly along the connection between the page and the root.