Chives need frequent management during the growing period for vigorous growth.

Weeding.

There are two dedicated herbicides for chives: first, 48% butralin emulsifiable concentrate. This product is a selective pre-emergence herbicide with a relatively wide range of applications, low toxicity and high efficacy. Target pests: dodder, ryegrass, goosegrass, barnyardgrass, foxtail, crabgrass, wild oat, shortawn foxtail, bubblegrass, lamb's quarters, sowthistle, etc.

Second, pendimethalin. This product is a dimethylaniline selective soil-treatment herbicide; it is strongly adsorbed by soil, not easily leached, and has low mobility in soil. It not only controls annual grass weeds such as barnyardgrass, crabgrass, goosegrass, Chinese sprangletop and foxtail well, but is also effective against some broadleaf weeds such as lamb's quarters, purslane and livid amaranth, and the product is highly safe.

Combine control and promotion.

The first is promoting growth: only when chives grow vigorously can they have thick roots and lush leaves. If drought occurs, watering must be combined with fertilization; the fertilizer is generally mainly nitrogen fertilizer, not exceeding 20 kg per mu. At the same time, in conjunction with the control of root maggots, irrigate with the special specific remedy for root maggots. When the chives grow to 16 cm tall, spray a growth-retardant to prevent lodging. Chives are most afraid of lodging; once they fall over, growth weakens, and by winter the roots become thin, affecting chive yield. For the growth retardant, ethephon can be chosen; the price is low and the effect is acceptable, but be sure to strictly control the concentration used.