Regular potato cultivation, which is a spring-summer harvest, is now based on the use of greenhouses to grow potatoes in the counter-season season for the purpose of the winter harvest. Bringing potatoes on the market in the pre-spring period has resulted in high productivity and efficiency and increased incomes for farmers. The technology of growing potatoes in greenhouses is shared as follows:
I. Preparation for play
1. The counter-seasonal production of potatoes land
Cultivation is carried out on the sandy soil, which is fertile, flat, easy to drain and drain, and which is deep in the field, and which is estranged. The use of cereal crops, pulses, carrots, cabbage and so forth is not appropriate to reduce the incidence of diseases by using eggplant crops, including eggplants, peppers and tomatoes。
Land as a whole
In the autumn, 30 cms of mudslides were thrown down and the ground was on the air, and early spring was covered with mud。
3. Preparation of seeds
High-quality, pre-cooked varieties are selected, with the first 15 to 20 d of potato seed being taken out of the cellar and then selected strictly. Choosing a herbal variety, the integrity of the chips and the finely formed potatoes, and eliminating the lumps with pests and pests, various mechanical injuries, rough aging of the skin, pretentious and deformed。
4. Potato processing
Potato greenhouse sprouts: they are an important measure to ensure early ripening, seedling, seedling and growth. At the beginning of february, seedlings of potatoes were placed in greenhouses at temperatures ranging from 10 to 15°c. After the luminous sprouts of the eye, the luminous sprouts of the eye, which are dispersed to give equal light to the light, were fashioned from three to five days to one day, so that the luminous luminous sprouts were thawed and formed into a normal short sprouts of colour。
Potato cut potatoes: each potato usually has three buds, i. E., one bud with two sprouts, and the sprouts must be cut along the sprouts, and one potato usually cuts 20 sprouts and cuts into a diamond block weighing about 25 grams. The remaining chips are harmful to the body and must be thrown away. 667 square metres require 130 kilograms of potatoes。
Ii. The landscape and fertilization
Potatoes select plots with deep, loose, high fertility and irrigation conditions, preferably with a pickle of melons, beans and corn. In the early spring (by 5 march) it was poignant. High-quality farm weight is applied 5,000 kg per 667 square metres, 30 kg of ammonium carbonate and 20 kg of potassium sulfate or 80 kg of special potato fertilizer per 667 square metres of land。
Potato fertilisation methods: organic fertilizer is applied to the ground in an integrated manner, and chemical fertilizers are applied to the gutter during seeding to ensure the nutrient needs of the potato during childbirth。
Iii. Sowning and covering
On or about 5 march, the potato shacks were baked and the ground level in the huts began to sow at 7°c. The seeding method consists of a two-way line (i. E. Above the ground) with a width of 1 metre and 70 cm above the surface, which increases the temperature of the ground to encourage early seeding, opening a ditch at a distance of 40 cm in two rows and 10 cm in depth at the time of planting, then placing the seeding blocks at a distance of 20 cm to the ground, 667 m2 of protected seedlings at a distance of 6000 cm and flatting behind the surface。
Iv. Field management
The improvement of the temperature in the greenhouses is key to the success of the cultivation of potatoes in the greenhouses, such as cold currents, which should be protected in the greenhouses. The temperature in the temperature room remains at 18-25°c during the day and 8-12°c at night. The seeding of potatoes is timely and defaced to avoid roasting. The soil moisture is kept wet between the seedlings and the seedlings, and can be filled with small ditches if drought occurs. At the same time, attention is being paid to venturing and cooling to prevent the growing of plants from becoming productive. The seedlings should be replanted early when they are released, weeded and fertilized with 5 kg of urea。
In the present season, the potato accelerator is then used for grass-grassing and mashed up with 40 loads of grass-grass and fertilizers, followed by some 20 centimetres of earth to avoid the appearance of chips, to ensure rational irrigation, such as the timely watering of water in the event of autumn drought, the discharge of ditches in the event of rain, the spraying of 1,000 ppmb9 or 250 ppm in the current and first flower seasons to inhibit the growth of plant leaves, the removal of flowering sequences and tippings in the present period of potatoes, the avoidance of nutrient depletion, and the promotion of a concentrated supply of troughs to increase production。
Potatoes for pests and diseases: 0. 5 per cent of bordeaux or 500 times more can be treated. The main diseases and pests of potatoes are early disease, black scabies, cyclic decomposition, viral disease, and vegetable vermin。
V. Agriculture
1. Potatoes are used to boost the fallout of the wheel and are strictly prohibited from being connected to the eggplant crop, with rational planting, cleaning of the fields, improvement of ventilation, application of base fats, increased phosphorus fattening, removal of strains and subsequent sterilisation of lime in empty holes。
2. Potatoes are selected for disease-resistant varieties and non-pathological potatoes。
3. Potatoes perform the disinfection of knives and potatoes。
Vi. Physical control
Potatoes combat pests by manually capturing and plastering, depending on their biological characteristics。
Vii. Chemical control
1. Premium potato disease: the immediate spraying of drugs at the onset of the disease controls its spread. Choosing to use mercuric manganese zinc wetting powder or toxachloride wetting powder, or copper wetting powder to spray 2-3 times every 7-10d。
2 potato black scabies (permosis): every 10 d of agrococin sprayed at the beginning of the disease。
3. Potato virus disease: in the early stages of the disease, the virusa is treated with wettable powder or a virulent emulsion spray。
4. Potato vegetative vermin: prevention and treatment with sharpness, uranus, resbon, greenfuc。
Viii. Enough access
Potato harvests can be full-time or split by size. One day of drying after harvest to improve the flavouring of the potato skin and increase the commerciality by reducing skin injuries。
