The latest potato planting technology

soil preparation

Should choose fertile sandy loam soil and mixed soil planting, in the previous crop harvest, timely stubble ploughing, ploughing depth of about 30 cm, and combined with soil preparation, generally about 5000 kg of organic fertilizer per mu, phosphorus fertilizer 25--50 kg or 50 kg of diammonium phosphate, before sowing, should be 70-80 cm wide ridge to be sown.

Cut into pieces before sowing

Cut 50 pieces per kilogram of seed potatoes. When cutting into pieces, first cut longitudinally, then cut transversely, requiring uniform size of the pieces, each with 1- 2 buds. Cut potato pieces should be washed several times with well water, then 50% carbendazim 500 times solution added to 1000 times agricultural streptomycin seed soaking for 15 minutes, and then removed and dried (preferably within 2 hours) germination. Germination: spring germination because the potato dormancy period has passed, just increase the temperature can be, about 20 days before sowing, will cut soaked potato pieces buried in wet sand germination, temperature maintained at about 15°, to bud long to 2em, you can sow.

Timely sowing and rational planting

Planting in spring, sowing from the end of February to the first ten days of March, harvesting from the end of May to the middle of June, covering with plastic film when sowing, planting in the mode of row spacing of 60cm and plant spacing of 25cm, or row spacing of 70cm and plant spacing of 20 cm, and maintaining the density of 4000- 4500 plants per mu is appropriate.

spring field management

After sowing in spring, the principle of field management is "squatting first and then promoting", that is, before budding, try not to water to prevent the above-ground part from growing wildly, after budding, water and fertilize to promote the growth of underground parts. Intertillage and topdressing are generally carried out in the first and middle of April: 40- 50 kg of carbon and ammonia (or 15 kg of urea) can be applied to each mu into the ditch. Cultivate soil and water from late April to early May. Cultivate soil and water for the second time in mid May. Water according to moisture content later to keep soil moist. It is advisable to dry and wet the land. Do not water for 10 days before harvest to prevent rotten potatoes in the field. If plants are found to have a tendency to grow wildly, 50-t00g 15% paclobutrazol can be sprayed per mu during budding period (late April and early May).

Pest control of potato

Potato disease is mainly late blight, control measures, first of all, strict quarantine, not from the disease area transfer seed; second, to do a good job of seed potato treatment, the implementation of the whole potato seed, need to cut into pieces, pay attention to knife disinfection; third, in the growth period, if found late blight disease plants, should be timely spraying control, available 50% mancozeb WP 1000 times or 25% redoxycycline WP 800 times solution for control. Once every 7 days, spray 3- 4 times continuously.

Aphids, ladybug 28 and underground pests are the main pests of potato. The main control methods include: aphids control with 40% omethoate 800 times solution or 10% aphids 1000 times WP; ladybug 28 spray with 80% trichlorfon 500 times solution or dimethoate 1000 times solution, and control adults immediately. Underground pests are mainly mole cricket, white grubs and black cutworm. 500g of 80% trichlorfon wettable powder is dissolved in water and mixed with 20kg of fried cotton seed cake or vegetable seed cake or wheat bran as poison bait. It is scattered on the ground near the root of seedlings in the evening to trap and kill them, or phoxim granule 812 powder is applied into the soil along with sowing to control them.