Potatoes are usually grown from mid-april to early may. The selection of soil fertilizing sandy soil plots to plant potatoes, then apply base fertilizers to the ground and, if there are more insects in the field, also eject some poisons such as thorium and thionphos-methyl, with some preventive and preventive effect, cutting pre-treated seedlings to three to four pieces of seeded potatoes, with a distance of 15 centimetres, appropriate fertilizing and watering after the soil has been covered, and timely replanting of potatoes after seeding。
I. Election of the land
1. The choice of soil is more fertile and earthy, where sandy land is the best for potato cultivation。
2. The ground will be dug as deep as possible and the soil will be fined and then applied to base fattening, which will be applied to different fertilizers depending on the plot, and generally, if farm fattening is available, it will be possible to apply decomposed farm fat, or 100 pounds of compound fat per acre, if it is not available, which may be increased or reduced appropriately depending on the land。
3 in addition, 2 kg of zinc sulphate, 20 kg of urea, 15 kg of potassium sulphate and 50 kg of calcium perphosphate may be used evenly and with better fertility. If there are more insects in the fields, a number of poisons, such as thorium and thionphos-methyl, can also be introduced, with some preventive and preventive effects。
Ii. Sowning
1. Potatoes are grown from mid-april to early may. Potatoes are to be sprung at a certain temperature about 10 days before seeding, and when the sprouts reach the height of the nail cover and are laid out outside the room, before the official seeding takes place, a potato can be cut in three to four pieces depending on the sprouts and then sowed with dust。
2. At intervals of about 15 centimetres, a layer of soil of about 2 centimetres thick is covered with a fertilisation process during seeding, with the fertilizer being concentrated as much as possible on farmers ' fatting and water if the soil is too dry。
Iii. Field management
1. Following seedlings of potatoes, seedlings shall be filled in a timely manner and, in the case of seedlings, in a timely manner。
2. For weeds in the field, there is a conditional choice of artificial weeding. If we use herbicides, care is to be taken of the harmful effects of the herbicides, which are commonly used in the form of sulfur, high-efficiency fluorine, pine, herbalone and dimethylethrin。
Iv. Access
When plant growth stops and most of the leaves are yellow, the tubers are easily separated from the runners, the ecstasy is hardened, the weight is increased, and the dry matter is up to a maximum level, i. E., the most harvestable period for the consumption of the tubers, which should be taken 5-7 days in advance, in order to mitigate the adverse effects of high temperatures in the later stages of growth and to increase castes。
