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

Peanuts (bilobs) generally refer to peanuts (legumes) annual herbs. The pods are swollen and thick, and the flowering and fruiting period is from June to August. So what kind of medicine does it play at seedling stage, full flowering stage, yellow leaves and cotton bollworm? How can we produce high yields?

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

First, the full flowering period:

1. Ploughing and soil cultivation: fruit needle cultivation can thicken the soil layer and make the fruit needle enter the soil early.

2. Timely watering: during this period, peanuts are very sensitive to water and should be watered in time.

3. Plant control and 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 lodge easily, resulting in a serious reduction in yield.

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, grub and cotton bollworm.

Chemical control:

In the middle and later stages of peanuts, peanut leaf spot and brown spot can be mainly prevented, and 70% methyl thiophanate wettable powder 800 times solution or 50% carbendazim wettable powder 800 times liquid spray can be used to control peanut leaf spot and brown spot disease in the middle and later stage of peanut, which can be sprayed every 7 times every 10 days. 2 Mel 3 times in a row, you can get a better control effect. The main pests are cotton bollworm, aphids, grubs, golden needle worms, etc. After mid-July, 50% "phoxim" 200ml can be diluted with 50 kg of water and sprayed on the roots, followed by watering, or before rain. You can also add an appropriate amount of water mixed with fine sand 10ml 15kg to make poisonous soil, which can be sprinkled along the ridge before the rain or watered after sprinkling. If there are underground pests, use methyl isofenphos or phoxim to irrigate the roots in time. Fungicides and insecticides can be sprayed together to treat both diseases and insects.

II. Seedling stage

The common diseases in peanut seedling stage are stem rot and root rot. It mainly showed a large area of dead seedlings in the seedling stage.

1. 2.5% Shile mu can be used with 20 grams plus days up to 2116 (for seed dressing). 25 grams of water can be mixed with 350ml of water to dry before sowing.

2. The peanut seedlings were sprayed with 96% carbendazim 3000 times plus 3% acetamiprid 1500 times plus 2116 (Zhuangmiaoling) 600 times, which solved the problem of peanut seedling death at seedling stage.

Third, yellow leaves

The etiolation of peanut leaves is mainly characterized by the following three symptoms:

One is the yellowing of iron deficiency. The general performance is that the upper tender leaves lose green, while the lower old leaves and veins remain green, when serious, the veins lose green and then yellowing, the upper new leaves all turn white, brown spot necrosis, dry shedding; iron deficiency chlorosis, the general peanut leaf size has no obvious change, but chlorosis is obvious.

The second is yellowing due to nitrogen deficiency. The chlorosis of peanut leaves caused by nitrogen deficiency is the chlorosis of the old leaves in the lower part of the plant, and generally shows that the leaves become thinner and smaller, the plants are short, and nitrogen deficiency yellowing is easy to occur in barren land, wheat interplanting and summer direct seeding peanuts.

The third is zinc deficiency and yellowing. The yellowing of peanut leaves caused by zinc deficiency is generally characterized by clustered leaves and yellow-white lobule disease.

Prevention and treatment of peanut leaf yellowing:

To prevent and cure iron deficiency chlorosis of peanuts, at present, the most commonly used method is to spray ferrous sulfate on the leaves. Generally, 0.1% ferrous sulfate (commonly known as black alum, green alum) solution can be sprayed on the leaves, once every 5-7 days, even 3 times. In order to enhance the adhesion of the leaves, 0.1% neutral washing powder can be added to improve the effect of spraying and enhance the absorption function of the leaves. Lvyebao and other preparations with iron chelate as the main composition and some trace elements can also be selected, and the spraying effect is often better than that of simply spraying ferrous sulfate.

For iron deficiency and zinc deficiency yellowing mixed plots, iron deficiency, zinc deficiency and prevention can be carried out. Generally, 150 grams of ferrous sulfate and 50 grams of zinc sulfate per mu, 60 kilograms of water, foliar spraying.

To prevent and cure nitrogen deficiency chlorosis, appropriate amount of nitrogen fertilizer can be applied before watering or rainfall, and about 1% urea aqueous solution can be sprayed on the leaves of inconvenient plots, which can effectively alleviate the symptoms of yellowing.

4. Cotton bollworm

During the period from the peak egg hatching to the second instar larva, the spraying effect is the best.

1. Spray 2Mel once every 10 days for a total of 3 times. When spraying, the liquid should be mainly sprayed on the tender leaves, tips and young buds in the upper part of the cotton plant. And pay attention to the alternate or mixed use of a variety of agents to avoid or delay the emergence of drug resistance of cotton bollworm.

2. In the early stage of cotton growth, emphasis should be placed on the control of the third generation of cotton bollworm in cotton field, and the insecticides with longer duration and good egg killing effect can be used from the peak egg hatching period to the second instar larva period.

20 ml chlorpyrifos ·phoxim EC 100-150ml/ mu; 15% Avermus ·triazophos EC 60-70ml/ mu; 40% diesel phoxim EC 100-150ml/ mu; 15.5% methamectin EC 75-100ml/ mu; 1.8% avermectin EC 10-20ml/ mu; 1% methylaminoavermectin benzoate EC 15-20ml/ mu 40% trichlorfon EC 60-80ml/ mu; 20% triazophos ·phoxim EC 60-100ml/ mu; 20% malathion ·phoxim EC 75-90ml/ mu; 50% trichlorfon ·phoxim EC 50-80ml/ mu; 12% malathion ·fenitrothion EC 75-100ml/ mu; 40% probromate EC 80-100ml/ mu; 5% flurosemide EC 120-160ml/ mu; 8000IUml/ Bacillus thuringiensis WP 200-300g/ mu 1 billion PIB/g cotton bollworm nuclear polyhedrosis virus wettable powder 80-100g/ mu; 48% chlorpyrifos EC 90-125ml/ mu; 40% chlorpyrifos EC 100-175ml/ mu; 35% parathion EC 60-180ml/ mu; 25% quinathion EC 60-100ml/ mu; 50% isocarbophos EC 50-100ml/ mu; 40% isocarbophos EC 50-100ml/ mu, evenly sprayed on water 50-60kg.

3. Control the fourth generation of cotton bollworm in cotton field, the generations overlap, and all generations of cotton bollworm occur in the field. Pay attention to the application of quick-acting and efficient insecticides:

30% cypermethrin ·phoxim EC 60-80ml/ mu; 12% beta-cypermethrin ·phoxim EC 100-150ml/ mu; 25% cypermethrin ·phoxim EC 80-l00ml/ mu; 20% cypermethrin ·horse EC 70-100ml/ mu; 20% cypermethrin ·phoxim EC 50-75ml/ mu; 25% cyhalothrin ·phoxim EC 60-80ml/ mu; 25% cyhalothrin ·propyl bromide EC 40-80ml/ mu 15% cypermethrin ·triazophos EC 50-70ml/ mu; 25% fenvalerate ·phoxim EC 70-90ml/ mu; 44% cypermethrin ·propyl bromide EC 70-100ml/ mu; 52.25% cypermethrin chlorpyrifos EC 80-110ml/ mu; 2.5% cyhalothrin EC 40-60ml/ mu; 20% phoxim EC 100-125ml/ mu; 4.5% cypermethrin water emulsion 60-80ml/ mu 20% acephate EC 225-300ml/ mu; 5% S-fenvalerate EC 40-50ml/ mu; 35% endosulfan EC 130-170ml/ mu; 2.5% deltamethrin EC 30-50ml/ mu; 2.5% cypermethrin EC 110-140ml/ mu; 2.5% cypermethrin EC 15-20ml/ mu; 10% cypermethrin EC 15-20ml/ mu; 5 cyhalothrin EC 32-50ml/ mu 1.8% Zeta-cypermethrin EC 16-22ml/ mu; 20% fenpropathrin EC 30-40ml/ mu, spray water 50-60kg evenly, spray evenly.

What kind of medicine can peanuts play in order to produce high yield?

If you want to increase your peanut income, you must first let your peanuts grow.

During the growing period of peanuts, Rain Water has plenty of light and nutrients; peanut seedlings begin to grow crazily, and some can reach waist-deep. The stems and leaves rise sharply and absorb the nutrients from the roots, which will affect the fruit setting rate.

1. Combination of organic fertilizer and chemical fertilizer

In order to improve the effective nutrients of peanut field soil and form a soil structure with upper loose and lower fruit, air-water coordination, organic fertilizer and chemical fertilizer must be combined in the type of fertilization.

2. the combination of previous crop fertilization and current crop fertilization.

Peanuts have the characteristics of like and lack of fertilizer, and most of the nutrient elements needed for high-yield peanuts are absorbed from the original soil. therefore, in peanut fields with medium or above soil fertility, the effect of fertilization in the first crop is better than that in peanut stubble, with more grain harvest and high yield of peanut.

3. Base fertilizer is given priority to, topdressing is secondary.

Before the flowering and needling stage, the root system absorbs the strongest fertilizer and absorbs the most fertilizer, so all or most of the fertilizers needed for high-yield peanuts should be combined with winter ploughing and early spring farmland as base fertilizer and seed fertilizer.

4. the proportion of fertilization in the stubble of peanut

According to the absorption of main nutrient elements of nitrogen, phosphorus and potassium and the absorption and utilization of fertilizer in high-yield peanut, the proportion of nitrogen halving, phosphorus doubling and total potassium fertilization was adopted. That is, 13.5 kg of nitrogen, 11 kg of phosphorus and 16 kg of potassium per mu.

The basic fertility of soil in medium fertilizer field is low, and in order to achieve high yield, the proportion of total application of nitrogen and potassium and double application of phosphate fertilizer should be adopted. That is, 27 kg of nitrogen, 11 kg of phosphorus and 16 kg of potassium per mu.