Detailed Explanation of Key Techniques for Field Management of Safflower

Safflower is a plant of the genus Carthamus in the Asteraceae family. Its flowers are used in medicine to promote blood circulation and regulate menstruation, and to dissipate blood stasis and relieve pain, helping to treat amenorrhea, dysmenorrhea, and traumatic injuries. At present, it is widely cultivated in ** and Tibet in China, so how should field management of safflower be carried out? Let's take a look at the detailed introduction below.

1. Thinning and Final Thinning of Seedlings

Thinning and final thinning of safflower seedlings generally need to be carried out twice. When the seedlings grow to 10 cm, thinning should be carried out once. At this time, diseased and weak seedlings are removed. For hole sowing, generally 3-4 strong seedlings are kept per hole, and for drill sowing, one plant is kept every 10 cm. The second thinning is the final thinning, carried out when the seedlings grow to 15 cm. Generally, 2 seedlings are kept per hole, and for drill sowing, one plant is kept at a spacing of 20 cm. After final thinning, frequent inspection is needed, and when missing seedlings are found, replanting should be done in time.

2. Intertillage and Weeding

Safflower needs intertillage three times throughout the growth period. The first two times are carried out together with thinning and final thinning, and the third time is carried out before the plants close in and form ridges. Weeding should be carried out according to field conditions. Especially for autumn-sown safflower, the seedling stage is longer, so weeding should be appropriately increased frequently. At the same time, attention should be paid to earthing up to prevent seedlings from lodging.

3. Fertilizer and Water Management

Safflower is a fertilizer-loving plant. In addition to applying sufficient base fertilizer, reasonable topdressing should also be carried out at each growth stage so as to obtain high yield. During the seedling stage, the demand for nitrogen fertilizer is relatively high, and nitrogen fertilizer helps the growth of stems and leaves. Therefore, when combining with thinning and final thinning, apply 1000-1500 kg of dilute human and livestock manure water per mu. Before budding, spray 0.2% potassium dihydrogen phosphate, or 0.5% kg urea, to promote flowering, with an obvious yield-increasing effect. Safflower is drought-tolerant and afraid of waterlogging, so generally no watering is needed during the growth period. In the early growth stage, when drought occurs, appropriate watering is enough to keep the soil moist. During the rainy season, attention should be paid to drainage to reduce pests and diseases.

4. Pinching

In order to increase yield, pinching should be increased during the growth period of safflower to promote more branching, with an obvious yield-increasing effect. In order to supplement the plant's nutrient consumption, fertilization is generally carried out after pinching. It should be noted that if the planting density is too high and the number of branches is appropriate, pinching should not be done, so as to avoid field closure, which is unfavorable for growth.

The above is an introduction to field management techniques for safflower. I hope it can help you. To learn more related knowledge, please stay tuned to us.