How to manage planting green beans in low temperature and rainy days

Kidney beans (kidney beans) are most afraid of repeated low temperature or continuous rainy weather, which is easy to cause rotten seeds and dead seedlings. If conditions permit, it is best to cover it with plastic film.

First, the choice of varieties.

To cultivate green beans in early spring, we should choose varieties with cold resistance, strong disease resistance, high yield and good quality.

Second, the choice of soil

Green beans have low requirements for soil, and loam and sandy soil can grow well. As long as the fields are well irrigated, they can be planted, but fertile soil can get high yield.

Third, sowing and seedling management.

1. Green beans are generally planted and transplanted in greenhouses because of their strong cold tolerance and no need for high temperature (temperatures higher than 25℃ will affect the differentiation of flower buds).

sow seeds

(1) Seedling raising: sow 4 seeds in the lattice nest and cover it with a handful of fine soil. Fields with underground pests can be watered with phoxim 1000 times solution. After making the compartment, spread a layer of plastic film on it and cover the shed. After the seedlings break the soil, the plastic film can be removed. If the sun is shining, you can also uncover the shed. When the seedlings grow to two true leaves, they can be planted in the shed (if there is no shed, they can be planted and transplanted only with plastic film after 10 days).

② Live broadcast: Green beans can also be broadcast live in the field, but the sowing date should be postponed to February 25th. Open the fertilized field 1.4m, sow two rows in each hole according to the hole spacing of 35cm-40cm (the seedling is 20cm away from the hole side), put four seeds in each hole, and then cover the soil. After sowing, cover it with plastic film and press the soil around it. After the seedlings are unearthed, tear a hole in the plastic film at the seedlings and draw it out. If the soil is dry, you can dig a nest and water it first, and then sow it when the water is dry.

Fourthly, field layout and fertilization.

1, on-site finishing

① Weeding: Manual weeding or chemical weeding can be used for fields with serious weeds. For chemical weeding, Roundup, Kewutrace and other herbicides can be selected and sprayed on the open space after the previous harvest, and 25-30kg of water is added for every 667m2 50ml. After 7 days, the whole carriage can be plowed.

② Soil disinfection: For fields with many diseases, 3-5g of triclosan or 0/00kg of quicklime/kloc can be sprinkled every 667 m2, and then ploughed and mixed evenly.

③ Insect pests: Phoxim can be mixed in soil and spread in fields with more soil pests.

Step 2 apply fertilizer

Applying sole fertilizer at one time, without additional topdressing in the future, not only saves labor and time, but also has good effect. The specific fertilization formula is as follows, and you can choose one according to the actual situation:

① 3000 kg decomposed human and animal manure, 50 kg phosphate fertilizer, 25 kg potash fertilizer and urea 10 kg were applied to ①667 m2.

② Apply decomposed farm manure 1000 kg, decomposed oil 100 kg, phosphate fertilizer 50 kg, urea10 kg2 667 m2.

③ Apply 3000 kg of decomposed chicken and duck manure, 50 kg of phosphate fertilizer and 20 kg of potash fertilizer.

Step 3 open the compartment

After the fertilizer is evenly applied to the field, the fertilizer is evenly mixed into the soil with a tractor or Niu Geng, and then the whole warehouse is carried out. The shed planting is generally1.5m (including ditches), and the ditch depth is 20cm.

Transplantation and management of verbs (abbreviation of verb)

1, migrating

Before transplanting, dig a nest on the surface of the prepared compartment, with two rows in each compartment (the center of the nest is 25 cm away from the side of the compartment) and the spacing between the nests is 35 cm -40 cm. When transplanting, the topsoil of the square seedling should be parallel to the box surface. Pouring sufficient rooting water, spreading plastic film, and sprouting. Then pour a small amount of water on the plastic film to build a shed. (The length of bamboo pieces in the shed is equal to the width of the film, and the width of bamboo pieces is 2 cm, and one piece can be inserted every 1.5 meters. )

2. Scaffolding

Generally, green beans can be erected when they are 20 cm long, and each nest should be built into a herringbone frame with a shelf (the shelf is not less than 2.5 meters), and the middle is fixed with a crossbar.

Step 3 harvest

It is wise to harvest pods when they turn from flat to round. Too tender harvest will affect the yield, and too late harvest will reduce the quality.

Six, pest control

Green beans in early spring are generally treated with pesticides such as chlorothalonil, fenxiuling and Tobuzin, and mixed with dichlorvos and metronidazole. It can be prevented and cured for 2-3 times. If there are more pests and diseases in the later period, use the medicine twice more.

The pests and diseases of green beans mainly include:

1, brown spot disease

Symptoms: Irregular black spots appear on the leaves, which gradually expand and form perforations.

Control method: Anthrax and Black God can be sprayed alternately.

2, rust, powdery mildew

Symptoms: Brown rust spots appear on the leaves, which gradually expand in the future, and frosty white ash appears on powdery mildew leaves.

Control method: Chlorothalonil and Fenxiuling are used alternately.

Insect pests: mainly aphids, bedbugs and ladybugs. Use drugs such as killing enemies, dichlorvos, midazolam, and Nongtianle for prevention and control.