Technical points of preventing bolting and increasing yield of Carrot in fertilization and Irrigation Room

Carrots cultivate soil

Weeding: carrots like light, so weeding and seedlings should be carried out early. Spray herbicides in time to prevent the formation of a large area of grass famine. Spray the ground on a sunny day before seedling emergence after sowing. When applying, control the concentration and do not overdo it.

Intermediate and fixed seedlings: in the afternoon of a sunny day, pull out overdense seedlings, inferior seedlings and miscellaneous seedlings. The first time was carried out in 1 Mel 2 true leaves, combined with shallow tillage and weeding, seedling spacing 3-4cm, and in 5 Mel 6 true leaves, the second time, seedling spacing 10-12cm.

Irrigation: carrot seeds are difficult to absorb water, sowing in different seasons, soil drought, will delay seedling emergence, resulting in lack of seedlings and broken ridges, sowing to seedling continuous watering 2 Mel 3 times, soil moisture maintained at 70% Mel 80%. Carrots are afraid of waterlogging, so they should be drained in time after rain. Carrots grow to the thick fingers, that is, the fleshy root expansion period is the most water demand period, should be timely watering to prevent the central Lignification of the fleshy root. Spraying Diguo Zhuangtiling can thicken the nutrient transport duct of carrots, improve the swelling of carrots, smooth fruit surface, strong fruit shape, high quality and high yield. In general, water is watered every 15 days, and the waterproofing is more and more and less. Timely and appropriate watering can improve the quality and yield of carrots and prevent the formation of split roots.

Fertilization: the soil should be fully fertilized before tillage and turned deeply after application. Topdressing twice during the growth of carrots, in order to avoid "burning roots", combined with watering, water with fertilizer, seedling stage should be thin, late stage should be concentrated. Twenty-five days after seedling, the first topdressing was carried out when there were 4 true leaves, and the second fertilizer was applied 25 days later.

Prevent carrot green shoulder and bolting: carrots are cultivated in the early stage of fleshy root expansion, about 40 days after sowing, so that the root is not buried in the soil, but not buried in the plant heart, which can prevent carrot fleshy root shoulder from exposing the soil surface and turning green by sunlight. When carrots enter the period of vigorous leaf growth, the amount of water and fertilizer should be properly controlled and squatting seedlings should be ploughed in order to prevent the excessive growth of leaves and cause bolting. If bolting occurs, the bolting should be removed in time to prevent the Lignification of fleshy roots.