What medicine does leguminous plant peanut seedling stage, full bloom stage, yellow leaf, cotton bollworm hit? How can we produce high yields?

Peanut (two-leaf plants) generally refers to peanut (leguminous plants) annual herb. The pods are swollen and thick, and the flowering period is 6-8 months. So what kind of medicine does it use at seedling stage, full bloom stage, yellow leaf and cotton bollworm? How can I be productive?

Peanut seedling stage, full bloom, yellow leaves, cotton bollworm what medicine? How can I be productive?

I. Full bloom:

1. Intertillage and soil cultivation: The soil layer can be thickened by needle cultivation, so that the fruit needle can be buried early.

2, timely watering: during this period peanuts are very sensitive to moisture, to timely watering.

3. Control trees and maintain stable growth: The soil of peanut field is rich in nitrogen fertilizer. In case of high temperature and heavy rain, peanuts are easy to grow, and then they are easy to lodge, resulting in serious yield reduction.

4. Timely prevention and control of diseases and insect pests: The main diseases and insect pests in the middle stage of peanut growth are leaf spot disease, white grubs and cotton bollworm.

Chemical control:

Peanut late mainly prevent peanut leaf spot disease, brown spot disease, control can choose 70% thiophanate-methyl WP 800 times solution, or 50% carbendazim WP 800 times solution spray control, spray once every 7 - 10 days, continuous spray 2 - 3 times, can receive better control effect. Insect pests mainly include cotton bollworm, aphid, grubs, insects, etc. After mid-July, 50%"phoxim" 200 ml diluted with 50 kg water can be sprayed on the roots, followed by watering, or spraying before rain. Can also add appropriate amount of water mixed with fine sand 10-15 kg, made of toxic soil, in the rain before the ridge sowing or watering after sowing. If underground pests are found, root irrigation should be carried out promptly with isofenphos methyl or phoxim. Fungicides and pesticides can be mixed together to spray, in order to play a role in disease and pest control.

II. Seedling stage

Peanut seedling diseases are mainly stem rot and root rot. It mainly showed large area of dead seedlings at seedling stage.

1, you can use 2.5% of the music when the mu with 20 grams plus days up to 2116 (special dressing) 25 grams mixed with water 350 ml after drying seed sowing;

2. Spraying 96% hymexiline 3000 times plus 3% acetamiprid 1500 times plus 2116 times after peanut seedling, which basically solved the problem of peanut seedling death.

III. Yellow Leaf

Peanut leaf yellowing is mainly manifested in the following three aspects of symptoms:

One is iron deficiency yellowing. Generally, the upper tender leaves lose green, while the lower old leaves and veins remain green. In severe cases, the veins lose green and then yellow, the upper new leaves all turn white, brown spots necrosis occurs, dry and fall off; iron deficiency yellowing disease, the size of general peanut leaves does not change significantly, but chlorosis is obvious.

The other is nitrogen deficiency chlorosis. The chlorosis and chlorosis of peanut leaves caused by nitrogen deficiency were firstly caused by chlorosis of old leaves in the lower part of the plant, and generally also showed thinning and shrinking of leaves, short plants, and nitrogen deficiency and chlorosis were easy to occur in barren land, wheat intercropping and summer direct seeding peanuts.

Third, zinc deficiency yellowing. Zinc deficiency caused peanut leaf yellowing, generally manifested as leaf clustering, yellow and white leaflet disease.

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Time: 2019-04-10 Click: