Planting method of Chinese yam bean

Chinese yam bean is a kind of fertilizer-loving variety, which can only be produced in places where the soil is fertile, and under its roots is the growing yam. We all know that the edible value of yam is very high, in fact, yam beans are not bad compared to it, and it can also be made into a lot of snacks. If you want yam beans to grow well, planting techniques are very important.

Planting method of Chinese yam bean

1. Seed selection. Requires bright color, full terminal buds, strong tubers, sparse tumors, few roots, no diseases and insect pests, no decay, no freezing, weighing about 150 grams. Sowing yam beans requires a diameter of more than 3 cm and a length of 15 cm to 20 cm.

2. Sprouting. 15-20 days before sowing, take out the yam beans stored in layers and put them in the environment of 25-28 ℃, sand 3cm and 5cm to promote germination. Yang bed or small arch shed can be used when sprouting, and the sun border or small arch shed should always be closed and insulated. When the young buds of yam beans emerge from the sand, they can be sown.

3. Sowing date. Chinese yam beans are not resistant to frost, so it is appropriate to sow seeds after the final frost. Ching Ming Festival generally raises seedlings in the second year, that is, sowing in mid-late April.

4. Sow seeds. First use a hoe along the marking line to open the ditch, the ditch depth is 8cm to 10cm, find the plastic casing, then place the seed potato horizontally above the plastic casing notch, then water, after the water has seeped, first cover the wet soil on the seed potato, and then cover a layer of dry soil, wait for the water to infiltrate through the dry soil, and then cover the planting ditch with dry soil.

Fertilization skills of Chinese Yam Bean

1. Base fertilizer. Select a good field, before ploughing, apply mature farm manure 2000 kg-4000 kg, compound fertilizer 60 kg-80 kg as base fertilizer, and then turn the soil over 30 cm and rake it to pieces.

2. Topdressing. Nitrogen fertilizer was the main fertilizer at seedling stage, and 10 kg-15 kg high nitrogen and potassium compound fertilizer was applied per mu. In the first ten days of July, 20 kg-25 kg of high nitrogen and potassium compound fertilizer per mu was applied and sprayed once. 25% potassium dihydrogen phosphate. Starting from late July, 0 can be sprayed. 25% potassium dihydrogen phosphate 2-3 times, nitrogen, phosphorus and potassium compound fertilizer 20 kg-30 kg per mu in the first ten days of August. Tuber filling period usually does not take soil topdressing, can be sprayed 0. 25% potassium dihydrogen phosphate at a time to prolong vine growth time.

Watering skills of Chinese yam beans

Chinese yam beans prefer sunny weather, lower air humidity and higher ones. Soil temperature needs to be watered 5 Murray 7 times in a lifetime. In the case of watering enough moisture, the first water is generally irrigated when the seedlings are basically complete, in order to promote seedling emergence and rooting, and the second water is better early than late, irrigating without waiting for the head water to dry. Under the condition of rainfall, it was watered every 15 days. In the rainy season, after every heavy rain, stagnant water should be discharged and waterlogged garden should be changed in time, in order to reduce ground temperature, replenish soil air, prevent disease and dead seedlings.

Pest control of yam bean

The main results are as follows: 1. Chinese yam bean anthracnose harms stems and leaves and causes stem withering and fallen leaves. Control method: the seed potato was soaked in 1RU / 1RV 150 solution for 10 minutes. Spray the first drug with 50% carbendazim 600 times solution when the seedlings are full, and spray the second time 10 days later. From July to August, it was found that 65% Dysen zinc wettable powder, 50% bacilli special wettable powder and 50% methyl topiramate were sprayed alternately 2-4 times according to the severity of the disease. Every time the interval is 8-10 days, the spray solution should be replenished after the rain.

2. Short body nematode disease causes dwarfing of the plant, yellowing and death of the whole plant in severe cases, and tuber tubercle in different sizes, which affects the yield and quality. Control method: before sowing, treat the soil with 5% thiazophos granule 5 kg / mu mixed with 100 kg of moist fine soil, spread evenly on both sides of seed potato in trench, or spread evenly in combination with soil preparation, 25-30 cm into the soil.

3. The leaf wasp bites the leaves of yam bean, resulting in serious loss of leaves, affecting photosynthesis and reducing tuber yield. Use 2% dipterex to kill 3000 times of liquid or 1000 times of crystal trichlorfon to spray stems and leaves.

4. The grub bites the tuber so that the tuber can not be cooked and the taste becomes bitter. With soil treatment for control, 50% phoxim 250-300ml per mu, 25 kg of fine soil mixed well, sprinkled into the ridge, immediately cut into the soil layer of 20cm, and then sowed yam seeds.

The cultivation of yam beans is the same as that of yam, because they are the same root crop. When planting, we should choose a good variety, full, good color, no wormhole priority. When planting, it is necessary to fertilize the land first and apply additional fertilizer in the later stage. It is difficult to produce yam beans if the soil is not fertilised.