The argon is highly resistant to temperature, both cold and heat, and can be cultivated from sub-cold to subtropical. However, it is suitable for four seasons of climate-friendly temperate cultivation. In high cold areas, temperatures of 33°c and 1 m thick of frozen soil are still safe for winter and yield is low but of good quality. The geront seeds begin at 5°c, with a temperature of 25-30°c and above 30°c, with a significant decrease in the gerontization rate. Seed breeding can last for more than 10 years. In cold winter areas, the upper ground is decaying, root and meat roots enter the hibernation season; in warm winter areas the hibernation period is not visible。
Seed reproduction
Easy to transport, high reproductive coefficients, strong growth, high yield and long lifespan. This method of reproduction is used more frequently in production. Seed breeding is broadcast live and spread between seed。
Live training
There are the advantages of strong plant growth, high growth, early gardening, early birth and high initial production. However, there are the disadvantages of low yield rates, high crop yields, difficulties in managing the seed season, a tendency to breed weeds, uneconomical land use, high costs, low distribution of roots, easy reversal of plants and short economic life. As a result, it is not usually used except where the land is large, the climate is warm, and the platinum has a long reproductive life. However, since the 1970s, the prevalence of membrane cover technologies and herbicides has addressed low-prevalence and weed breeding and increased applications。
The period during which seedling is planted shall be determined by the temperature conditions required for seeding, the pattern of growth and growth of seedlings, and the ecological conditions and methods of breeding them。
The sowing of seedlings should be conducive to the expansion of the leaves and the growth of the roots of seedlings, to ventilation and to the mitigation of disease. In addition, it should be determined on the basis of seed sprouts。
In general, seedlings are broadcast live from 40 to 45 centimetres in the field, 10 centimetres in the cavity and 2 grains per cavity and 3 centimetres. The seeding capacity of nurseries per hectare is approximately 375 grams, with the possibility of planting 7-10 hectares of honda. When seeding occurs, a ditch is dug at a distance of three centimetres, then seeds are planted at a distance of between one and three centimetres, with a slight suppression。
At the time of transplantation, 30 to 40 grams per square metre were planted, with more than 1,500 seeds. The seeding should be preceded by the water of the bottom of the ground, which is 1 to 2 centimetres thick. A seedling transplant is carried out when the tuber is 10 to 15 cm tall and the second is not smoked. It has the same distance as a live nursery。
Large seedlings are grown, usually in cold or hot beds, and are nourished. The trophic caliber is 6 centimetres, with two grains being planted each, at a distance of 3 centimetres, and the soil is 1 to 2 centimetres thick. After the seeding, only the seedlings were returned. If planted directly on the bed soil, the range should be increased, usually 20 cm and 5 cm, for seedling purposes and the reduction of the roots. The bed soil is well prepared to grow the earth, so that it can grow and seed。
Shrimp management
One sapling should be uprooted for a week or so, when there are two saplings per den. The deficit should be replanted with seedlings that have been uprooted or with pre-prepared seedlings。
The seedlings are normally planted under protective conditions after the seed is sowed that the temperature remains above 20°c. When seedlings occur, attention should be paid to ventilating air at temperatures not exceeding 30°c during the day and frequent watering to avoid soil drying. Water should be controlled and cooled in order to facilitate the rooting and survival of transplanted seedlings when carrying out leaves for transplantation. Usually around 15°c during the day and around 10°c at night. Sapling transplants should be carried out in the appropriate humidity of the field and water immediately after seeding. Before the transplantation takes place, in the event of a strong sunlight, it should be covered by reeds or black sunnets for about a week。
The seedlings grow slowly, with large distances, and are prone to weeds, and require frequent tillage or spraying of herbicides. In general, 1,500 g of herbicide-free valleys and 1,500 kg of water are used on herbicides per hectare, and three to five days after seeding is sprayed with oscillations and ditches, but manual weeding is still required after two months。
4 fertilizer management: once a thin human urine fertilizer, 10500-15000 kg/ha, after or during the transplant. Some 20 days later, we'll have to go after the little manure again. From then on, autumn fertilisation was pursued in july to august, at around 300 kg of compound fertilization per hectare. If the seedlings thrive at this time, it may be less or less. In case of excessive fertilizer, excessive growth of the leaves, fallbacks, and poor ventilation, which can lead to dead and brown spots。
