How to choose green beans? What are the methods of raising seedlings?

Kidney beans are also called kidney beans in many places, and the local dialect of Xiaobian's hometown is "Tongdou". Kidney beans generally have to judge the planting time and seedling time according to the different characteristics of their varieties. Now let's learn about the varieties of green beans and their breeding methods.

First, how to select the seeds of green beans? What varieties do you have?

1. Yulong No. 8

Yulong No. 8 kidney bean variety trailing, plant height 200-250cm, green leaves, apical leaflet heart-shaped, leaf veins obvious, tip concave. The flowers are white. Oblong, green immature pods, mature bluish white, long 21cm, wide 1.5cm, 7-9 pods. Grains flat, reniform, white, navel white.

two。 Chiyu No.2 string Bean

The variety is trailing, plant height 350cm, compound leaf tip leaflet rhomboid, bilateral leaflet tip apical tip, base round, single plant 3-5 branches, about 70 pods. Flowers white, 3-4 leaf nodes bearing the first inflorescence, each with 4-8 flowers. The pod is cylindrical, unreinforced, green, 25-30cm long, and the number of pods is 7-9. Grains flat, reniform, brown, navel ring purplish red.

3. Seven inch cabbage beans

This variety is a mid-early maturing variety. The vine is 2.5 to 2.8 meters long and grows vigorously. Inflorescences appeared at 3-4 nodes, and there were 3-6 pods in a single inflorescence. The pod is 20-25 cm long and 1-1.2 cm in diameter. The young pod is light green and white. Its outstanding feature is excellent quality, no fiber, even if the old mature pod has yellowed and softened, the pod still has no fiber. Generally, the yield is 1800 to 2500 kilograms per mu. This variety is suitable for cultivation in spring greenhouse, spring open field and summer and autumn open field.

Second, how to raise seedlings of green beans?

1. Raising seedlings

The root regeneration ability of kidney bean is weak, so raising seedlings with nutrition bowl can ensure the survival rate of transplanting to a certain extent and reduce the degree of root damage. For the nutritious soil used for raising seedlings, the soil with high content of organic matter should be selected, and the amount of available nitrogen fertilizer should be strictly controlled. It is best to use fertile field soil instead of vegetable garden soil to avoid harm caused by diseases and insects in the soil. The organic fertilizer of nutritious soil should be fully fermented and mature. The main raw materials are horse dung, cow dung or compost made by retting, and bio-organic fertilizer can be used under certain conditions.

two。 Sowing seeds

If you raise seedlings in a nutrition bowl, you should choose to sow seeds in the morning in sunny and warm weather, pour through the bottom water before sowing, and sow seeds on demand after the water seeps down. Sow 2-4 seeds in each nutrition bowl, cover soil 2-3 cm after sowing, and then move the seedling tray to a greenhouse or plastic greenhouse to keep the seedlings warm. If the outside temperature is low, cover the grass to keep warm at night. The seed sowing rate of vine green bean variety is 2 to 3 kg per mu, and that of dwarf green bean variety is 2.5-4 kg per mu.

3. Temperature

After sowing to before emergence, the temperature of kidney bean should be kept at 25-35 ℃ in daytime and not less than 15 ℃ at night. After the seedlings were unearthed, the daytime temperature could be reduced to 20-25 ℃. After 20-30 days, the seedlings can be transplanted and planted when they have 2-4 true leaves. 3-5 days before planting, the temperature of kidney bean can drop to about 15 ℃ in daytime and keep above 10 ℃ at night. Seedling exercise should be carried out to enhance the adaptability of seedlings.

4. Water management

In the seedling stage of kidney beans, if the seedling soil is not too dry, it can not be watered, such as the climate is dry, it can spray small water, or sprinkle fine fluvo-aquic soil among the plants to preserve soil moisture. Do not flood irrigation, to prevent pouring cold water to reduce the soil temperature, the occurrence of seedling "rust root" phenomenon.

To sum up, it's all about string beans. If you plan to plant green beans this year, you can come to Nongxun to buy seeds and seedlings, and click on the agricultural products link that may interest you.

With regard to the wonderful pictures and articles and popular comments on the seed selection of string beans, you may be interested in the following recommended contents of Nongxun. Welcome to read.

Agricultural products you may be interested in: national supply of high-quality kidney bean seeds