New cultivation techniques of Potato with High efficiency and non-pollution

The high-efficiency and pollution-free cultivation technology of potato has the most significant effect on the gentle slope of red soil hilly land, which can mature more than 15 days earlier than the potato cultivated by common methods in the same period, save fertilizer by 30%, save labor by 2-3, save cost by more than 40%, increase production by 150%, and increase the rate of large potatoes by 30%, 40%, 667 square meters and more than 700 yuan.

First, select improved varieties: early and middle maturity varieties with high quality, high yield and strong resistance should be selected, and virus-free varieties are better. The varieties available are: Zhongshu 2, Zhongshu 3, Dongnong 303, Lu Potato 1, Zhengshu 5 and so on.

II. Technical contents and planting procedures

1. No-tillage or shallow tillage, directly apply red microbial fertilizer 50kg-70kg + 16.8kg-24kg 25% nitrogen, phosphorus and potassium compound fertilizer, or 9.3kg-13.3kg 45% nitrogen, phosphorus and potassium compound fertilizer + urea 10kg-15kg dry chicken manure 330kg, pig and cow manure water or biogas liquid 2500 kg per 667m2.

2. Sowing from November 10 to December 10.

3, 667 square meters of potato 100kg-125kg, covering and ridging.

4. After rain or ditch watering, spray 200 grams of no-deep tillage agent and 100 kilograms of water.

5. Cover the microfilm and break the hole to introduce seedlings.

In late February, more than 15% of 50 grams were sprayed and 40 kilograms of water were sprayed.

In July and early March, 20 ml of bengdaling was sprayed and 30 kg of water was sprayed.

The harvest will be finished by the middle of April.

Third, skillful fertilization: directly dig a 15cm sowing ditch on unploughed or shallow cultivated land, and apply microbial fertilizer, compound fertilizer, urea and half of chicken manure to the ditch, covering 5cm thick fine soil. Then pour pig and cow dung water or biogas slurry into the ditch to saturated humidity, and then sow seeds. Finally, the other half of the chicken manure is applied between the seed potatoes.

Fourth, the treatment, sowing, ridging and film mulching of seed potatoes: seed potatoes should be routinely dried, cut and disinfected. Each kilogram of seed potato is cut into 40-50 pieces, and each piece should have 2 bud eyes. The sliced pieces were immersed in 5 grams of "920" and dissolved in a solution of 100 kilograms of water for 5-10 minutes. When sowing, the bud eyes are upward, slightly pressed into the mud of the sowing ditch, and the distance between rows and plants is 50-60 cm x 20-25 cm. Sowing 4500-5500 holes in 667m2. Cover and ridge immediately after sowing, the ridge height is 15-20 cm, spray without deep ploughing. Note: spraying no-deep ploughing must be carried out after rain or after irrigation with half-ditch water to make the ridge soil absorb moisture, otherwise it will affect the effect. Cover the microfilm immediately after spraying no deep ploughing. When covering the film, the periphery should be compacted and not left empty, and the film should be scattered sporadically to prevent the wind. Check in time after 25 days, break the membrane to introduce seedlings, in order to prevent frostbite and solar radiation scalding the top bud. After emergence, there is no need for ploughing, weeding and pest control in the field.

Fifth, pest control: potato late blight generally invades the aboveground parts from late March to mid-April and infects underground tubers from the end of April to early May and leads to rotten potatoes. Ladybugs, aphids, beetles and other pests began to damage from mid-May to early June. After adopting this technology, the potato has been harvested before the middle of April, so it completely avoids the above diseases and insect pests, so there is no need to spray pesticides to ensure the high quality and pollution-free of the products.