How do you grow fennel seeds?

The stems and tender leaves of fennel can be used as vegetables, and the seasoning cumin is the dry ripe fruit of plant fennel. So, how to grow fennel seeds?

1. Sowing mode

There are two ways of ① sowing: winter sowing (egg-wrapped) and spring sowing. Sowing seeds in winter before last winter, sowing seeds in suitable soil moisture pressed with salt and frozen farmland (from November 25 to December 5 in Kashgar reclamation area, the ground temperature of 3 cm can also be used as an index of less than 5 ℃), and the harvest will be in the second year. Spring sowing, management and harvest in the spring of that year (the degree of advance of spring sowing time and the yield of fennel harvested were non-linear positive correlation).

② interplanting takes advantage of the short growth period of fennel, interplanting fennel with wide rows after the end of sowing crops with wide and narrow rows of plastic film in spring. The suitable ground temperature before April 12 or 5 cm is no higher than 15 ℃.

two。 Variety selection

Shacha cumin with strong branching ability, high yield, lodging resistance, purification and rejuvenation and screened seeds should be selected.

3. Sowing requirements

There are two kinds of fennel sowing: hole sowing and strip sowing. Winter sowing is dominated by hole sowing (row spacing 20 cm 30 cm, hole spacing 9 cm 12 cm), spring sowing is dominated by strip sowing (30 cm equal row spacing, plant spacing 5 cm 8 cm). The set broadcast is broadcast with a hole broadcast. The depth of sowing is 1.5 cm to 2.5 cm, and it is suppressed after sowing. Seed consumption is 22.5-30 kg per hectare (1000-grain weight 1.3-1.8 g). 300 ~ 500000 holes per hectare, 140 ~ 2 million seedlings and 150 ~ 1.8 million seedlings per hectare.

4. Administration and Management

The center of early spring field management in ① is to increase temperature and preserve soil moisture. Pre-sowing fennel should be suppressed with a shallow rake in front of the seedling, rake the ground in time in case of rain before the seedling, and break the knot, so as to preserve the moisture and grow early. The direction of the shallow rake is perpendicular to the sowing direction, the depth of the rake is not more than 2 cm, and it is equipped with a crushed soil ballast.

The field management of ② at seedling stage is mainly chemical adjustment, supplemented by manual grass pulling and seedling setting. At the 2-4 leaf stage of fennel seedlings, foliar fertilizer was sprayed once (1%-2% potassium dihydrogen phosphate + 0.5%-1% urea). At the 5-8 leaf stage of the seedlings, 0.15%-0.3% thalidomide was locally sprayed on the overgrown fields to enhance the coarseness of the basal internodes of the seedlings, reduce the plant height and prevent lodging in the later stage.

③ field management at flowering and fruiting stage focuses on preventing accumulated rain and flooding, nourishing roots and protecting leaves, promoting grain yield and increasing grain weight. Cumin is more resistant to drought but not waterlogging. if it rains from May to June and the water in the field is more than 8 hours, it will form drowning, cause plant death, or even lose harvest. Therefore, in case of moderate to heavy rain, timely drainage.

Although fennel flower and fruit stage does not require much water and fertilizer, it has a long overlap period. Abnormal climate and soil drought will adversely affect flowering, fertilization and yield, but boron and zinc microfertilizers with a concentration of 0.2% to 0.4% can be sprayed on the leaves to improve the seed setting rate. In the middle and later stages of fennel growth, there are dots of de-fertilizing and premature senescence (leaf color yellowing), which can be sprayed with 1.5%-3% urea leaf fertilizer to improve the ability of plant roots and leaves to absorb nutrients and promote the fruit to mature normally. For the flakes with dark green leaves and a late ripening trend, 0.2%-0.4% potassium dihydrogen phosphate can be sprayed to increase the 1000-grain weight and achieve the same harvest time as a whole.