Yunnan potato planting technology

Potatoes are planted into the shed at the beginning of April each year. When the potatoes have grown to 2 inches in height, they are transplanted to the field.

1. Cut and germinate. About 20 days before sowing, germination started. After cutting, water soaking seeds shall be sterilized with 1:200 times of small gray dry mix or carbendazim powder. When the shoots grow to 0.5-1.0 cm in length, sowing begins.

2, site preparation ditch. The next kind of look at the land before the public opinion, most of the potato planting for the double ditch colonization, ditching can be used when the big line 50 cm, 40 cm small rows.

3, seed cover film. From the vernal equinox to the Ching Ming period, the spacing is controlled at 20 cm. Before sowing, spray with 1 : 10000 times of pungent sulfuric acid along the ditch to prevent underground pests. Organic fertilizers can be scattered directly into the trenches or when the soil is settling. Chemical fertilizers can be placed in the trenches or sprinkled between the seed blocks (note that they cannot be in direct contact with the seed blocks).

4. Seedling emergence and seedling management. After the Qingming is about 20 days after sowing, that is, there are seedlings exposed soil, this time can be Chong Miao Department of micro-membrane smash break the wind to prevent steamed seedlings. When the seedlings grow to 10 cm in height, the membranes around the seedlings are tightly packed with soil to ensure that the water is kept under pressure. The early stage of potato growth should not be watered. Seek insect pests such as aphids or thrips at the seedling stage.

5, a reasonable fertilization. Potatoes prefer to use farmyard fertilizers. It is advisable to use 4000-5000 pounds per 666.7 square meters, and nitrogen, phosphorus, and potassium should be used in conjunction with appropriate fertilizer application. Potatoes require large amounts of potassium, and the ratio of scientifically reasonable N, P and K fertilization is 1.85:1:2.1. Potatoes like to absorb ammonium nitrogen and absorb more sulfur. According to the experiment, every kilogram of potassium sulfate added can increase production of 100-150 kilograms of potatoes.

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