Marigold cultivation techniques

Marigold is an annual herb that is ideal for the extraction of pure natural yellow pigments. According to expert analysis, natural yellow pigment is an excellent Antioxidant, widely used in food, feed, pharmaceutical and other food and chemical industries, and has an important role in improving product color. It is an indispensable additive in industrial and agricultural production. . According to the survey, natural yellow pigment has the advantages of being pollution-free, with good performance, suitable price, and wide application, which can significantly improve the appearance color and quality of industrial products. Therefore, with the intensification of the degree of industrialization, the application of natural yellow pigments will become larger and larger. It will be popular in the domestic and international markets and will show a trend of supply exceeding demand. The market prospect is very broad.

In March 2002, the flower group of the State Agricultural Institute went to Chenggong County in Kunming and introduced the 450 seedlings of marigold for cultivation experiments. According to the actual situation in our state, we have developed a cultivation technology program.

First, scientific preparation:

Before the ploughshare, we must first clean up the weeds in the fields, and weed the weeds. Apply 1300kg of fully-fertilized farmyard fertilizer to each mu, and use 25kg of calcium phosphate (base fertilizer) to carry out the two ploughs and two rakes. Large earthworms were broken, so that there was no big soil in the field, the ground was flat, the width of the car was 80cm, the depth of the ditch was 40cm, and the distance between the cars was 40cm. The required surface was dry and the soil relative humidity in the tillage layer was 65%.

Second, scientific planting:

The plant spacing is 4060 (cm). When planting, planting with soil and pouring enough water (continuously for three days) ensure that marigold seedlings survive.

Third, scientific fertilization:

As the leaves of marigolds are larger, the demand for water and fertilizers is also greater. After 15 days after the seedlings have survived, they should be filled with canal water, and 10 tons of human excrement should be applied to each mu in advance of irrigation. The barrel of human urine is mixed with 50g of urea. After mixing, apply a scoop of large excreta to each plant. Apply as much as possible around the rhizosphere and do not apply to the leaves. Every 20-25 days later, we must use this method to conduct scientific fertilizer once.

Fourth, pest control:

Under normal circumstances, the pests and diseases that damage the normal growth of marigold are leafminers, cabbage caterpillars, beetles and yellow ants. Phoxim can be sprayed or rooted to prevent it.

Fifth, timely harvest:

When used as fresh cut flowers, timely harvesting should be carried out, which is conducive to the activation and growth of the next batch of flower buds. To continue to provide marigold fresh cut flowers to create conditions.


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