Analysis on the key points of cultivation techniques for early listing of Potato

For farmers who grow vegetables, if their vegetables can mature and go on the market early, they will be able to sell them at a good price in others! To improve the economic benefits of crops, spring is a good season for potato planting. If the early planting technology is well used and the soil, fertilizer and water management is in place in the middle stage, the potato can be put on the market early and sell more money.

The following is to share the planting and management methods of early planting and early listing of potatoes in spring for your reference.

I. varieties should be selected.

As the saying goes: three-point seed seven-point management. For the majority of farmers, if a variety is selected in the early stage, the yield in the later period will be guaranteed by 30%. For potato, the varieties with few branches, erect plant type, concentrated tuber, high yield and early maturity should be selected. at the same time, the varieties with few reproduction generations and virus-free should be strictly selected.

Second, the shed land should be rectified.

For those who grow potatoes in the greenhouse, the most suitable previous crops are cereal crops, and try to avoid using the plots where eggplant and cruciferous crops are planted in the previous crop. The planting ground in the greenhouse should be leveled before winter, and the leveling time should not exceed 20 days before sowing at the latest.

When preparing the soil, we should combine the soil moisture of the planting land to create soil moisture in advance, first sprinkle an appropriate amount of soil fertilizer, and then plough the land more than 20 centimeters deeply, and combine with land rotary ploughing and apply 2000 kilograms of rotten organic fertilizer per mu. Before sowing, 20 kg of compound fertilizer with a ratio of 1 to 0.5 of nitrogen, phosphorus and potassium was sprinkled along the ditch, and then ridges were formed.

Third, seed potatoes should be dealt with well.

The seed potato should be disinfected, sliced and sprouted about 20 days before sowing. Before cutting the seed potato, you should first disinfect it with disinfectant, then dry mix it with plant ash, place the potato buds layer by layer upward, and then cover them with fine sand 5 cm thick, so as to form a seedbed and cover the top layer with grass grass. The temperature should be kept at 15-25 degrees, and the budding time is about 20 days.

When the potato seed sprouts to 1-2 cm, put the potato pieces under the indoor scattered light of 10-15 degrees to dry. When spreading, the bottom should be covered with a layer of wet sand. In addition, before sowing, dressing potato seeds with plant ash + chlorothalonil + new high-fat membrane can speed up the healing of cutting edge, reduce the occurrence of rotten seeds, and supplement potassium to prevent diseases.

Fourth, the timing of sowing should be found.

Sowing can be carried out when the underground soil temperature of 10 cm in the greenhouse is stable at 8 degrees in spring, and it is easy to be affected by low temperature prematurely. If sowing too late, it can achieve early seed and early maturity.

When sowing, the high ridge sowing method can be selected to increase the air permeability, and the plastic film should be covered after sowing. If there are conditions, the intima can be covered or a small arch shed can be built to improve the soil temperature and promote the early emergence of seed potato.

V. Field management should be scientific

While breaking the film and releasing the seedlings in time, the holes should be tightly covered with wet soil to prevent air leakage and reduce the low temperature. during the 20 days from sowing to seedling emergence, the greenhouse temperature should be kept at 16-20 degrees during the day and 12-15 degrees at night. At the same time, in order to promote the rapid growth of seedlings, all seedlings should be watered once.

In the potato growing period, it is necessary to do a good job in ventilation and cooling management to keep the ground temperature in the greenhouse at about 16-18 degrees. When the greenhouse temperature reaches 20 degrees, ventilation should begin at about 9: 00 in the morning, and the shed should be closed at 15:00 in the afternoon. When the average temperature in April is more than 20 degrees during the day and more than 12 degrees at night, the greenhouse should be ventilated and cooled day and night.

In the three periods of potato emergence, rosette stage and topping, water should be irrigated once respectively, and water should be watered twice in the potato block expansion period in order to promote the water demand of potato block development and expansion. When the potato is watered with top water and expansion water, an appropriate amount of high potassium fertilizer should be applied with the water according to the growth of the seedlings.

In addition, in order to supplement the nutrients of seedlings, promote fruit expansion and development, and then maximize the yield in the later stage, Diguo Zhuangtiling can be sprayed at the potato rosette stage, which is five toxic, harmless and has no adverse effects, and pesticide expansion agents or hormones can be sprayed as far as possible to avoid drug damage. At the same time, if the phenomenon of overgrowth of potato seedlings is found, Huawang No. 3 can be sprayed to control the vigorous growth, reduce the ineffective consumption of nutrients and promote flower bud differentiation.