What kind of pesticides are used in leek maggots
Leek is highly adaptable, cold-resistant and heat-resistant, and is cultivated all over the country. So what kind of pesticide do leek maggots use?
What kind of pesticide does leek maggot use?
The root was irrigated with chlorpyrifos 2000 times solution and Emile 3000 times solution, once every 7 days, continuously for 3 times, and the control effect reached more than 90%. After root irrigation, it is forbidden to eat leek within 40 days. You can take this opportunity to fertilize and strengthen the seedlings of Chinese chives to strengthen their growth and resistance.
Second, the morphological characteristics of leek.
Root: a fibrous root system that is chord root and has no main and lateral roots. Mainly distributed in the 30cm tillage layer, the number of roots is about 40, which can be divided into three types: absorbing roots, semi-storage roots and storage roots. Born at the base of the shortened stem, the shortened stem is a discoid metamorphosis of the stem, rooting in the lower part and leafy in the upper part.
Stem: the stem is divided into vegetative stem and flower stem. The biennial vegetative stem is shortened and metamorphosed into a disk. Chen is called the bulb disk. Due to tillering and root jumping, the shortened stem gradually grows to the surface, with an average annual elongation of 1.0-2.0cm, and a gourd-like rhizome is formed under the bulb disc. Rhizome is an important organ for storing nutrients.
Leaves: leaves clustered, leaves short on stem, leaf blade flattened banded, can be divided into broad leaves and narrow leaves. There is wax powder on the surface of the leaf, and the stomata fall into the stratum corneum.
Flower: an umbel covered by a paniculate involucre with 20-30 florets. The floret is bisexual, with white Corolla, 6 tepals and 6 stamens. Ovary superior, cross-pollination.
Fruit seed: the fruit is a capsule, the ovary is 3-loculed, and each chamber has two ovules. The mature seed is black, shield-shaped, and the 1000-grain weight is 4-6g.
Leek leaves, scape and flowers are used as vegetables; seeds can be used as medicine, with kidney, stomach, refreshing, antiperspirant and astringent effects. In traditional Chinese medicine, some people call leek "intestinal lavage grass".
- Prev
What does an olive tree look like?
Olive trees are olive family, olive trees, also known as mountain olive, white olive, red olive, green seed, advice fruit, etc., so what does the olive tree look like? What does the olive tree look like? The olive tree is a tree 10-25 meters high, with 3-6 pairs of leaflets, papery to leathery, draped.
- Next
Is Elaeagnus angustifolia an evergreen tree or a deciduous tree?
Elaeagnus angustifolia is an evergreen shrub with a round crown. The leaves are oval, leathery and glossy, with a gilt edge on the dark green edge. The flowers of Elaeagnus mandshurica are born in the axils of leaves, with 1-3 flowers in each axil, flowering from September to November, and the fruit will mature in May next year, and the fruit will be red after ripening.
Related
- A course of planting techniques and methods on how to grow carrots
- How to plant the latest tulips?
- Is it better to pick tea in the morning or in the afternoon? When is the best time for tea to be picked? what is the third or fifth tea?
- Launch Yuanxiao Happy combination Haocha + Tea Yuan healthy Taste
- Penghu Tourism "Fireworks 20 Parade with You"
- 2022 West Lake Happiness holds "Digital Revitalization Voucher" and draws iphone13 and laptop.
- Banqiao Fuzhou social houses are designed to change start-up combined with police elimination to create a safe and livable environment
- The convenient measure of "mechanical weeding" in Xinbei has been abused and the Agriculture Bureau has imposed heavy penalties on the illegal land consolidation.
- Changgeng University Joins Hands with Four Memory Factories to Rescue Memory Talent Shortage
- The list of Taiwan's top 100 MVP managers is listed by the Director-General of the Farmers' Association of Sanxia District.