Cultivation season
In accordance with the requirements of melon growth and development for climatic conditions, in particular temperature conditions, the melons are suitable for growth within the temperature range of 15-30°c and are suitable for high- and low-level changes in the temperature of the growth process, with sufficient sunlight and a relative humidity of 70% - 80%. Most parts of south china can be cultivated in spring, summer and autumn. In guangzhou, for example, spring guerillas were generally sowed or bred between late december and february of last year, for a period of 4 to 6 months; summer guerillas for a period of 3 to 5 months, for a period of 6 to 8 august; and autumn cucumbers for a period of 7 to 8 months, for a period of 9 to november。
In all parts of the yangtze basin, field seeding can begin from the beginning of the pre-caution period until the end of july, with the use of hotbeds or hotbeds for seeding, and can be done early until the pre-eminence of the field. According to the nanjing vegetable test station, the guacamole can be sowed from spring to summer on the outskirts of nanjing, in batches, such as the planting on 28 july and the beginning of the harvest on 28 september, at a time when the variety of flowers can be increased around the national day。
The planting density of the melon varies according to the planting season, with the guangzhou region being two metres wide and 50 centimetres wide, with a den of 7-8 grains per den, with 3-4 seedlings, and a double-line frame, or a single plant, 20 centimetres apart. The spring season is long-lived and the climate is more suited to the demand for a melon to bear, and the leaves grow and produce more flowers, usually 1,700 to 2,500 plants in 667 square metres, and the summer and autumn season is shorter, with 667 square metres in 2000 to 3,000 plants。
2. Cultivating seedlings
Vegetable seeds are sprouted, and both live and seedling should be done. They can be immersed in warm water about 50°c for four to five hours, followed by sprouts around 30°c, then re-emerge two days later, extracting seed from the pre-embroided seed and preserving it at a slightly lower temperature (around 20°c), keeping it wet and protecting the embryo, and sowing together after most of the remaining seed has sprouts。
The early spring season is a live planting, and cold-proof seedlings are a key. On the outskirts of guangzhou, a large area of morning guava is grown, usually before the cold. It is about 1. 7 metres wide, sowing on a single line, 20 centimetres away, then covering the cold with film. In the seeding line, arch-shaped bamboo bows are inserted to cover the agricultural film, pressing around and keeping the temperature warm. Later, they are wet and cold, are not irrigated within the membrane and drain the drain. In case of dry cold, be careful to be wet, and when there is sunlight, the membrane can be drenched; in case of no sun and insufficient internal humidity, the membrane can be drenched around midday, and the cover will follow. Attention must also be paid to the exercise of young seedlings, and to the decorative exercise of the sun. Usually, the membranes are removed around 9 a. M. And around 4 p. M. After exercise, the seedlings are short, thick and cold, and the seedlings that are not exerciseful are obstinate, thin and intolerant。
Large-scale live broadcasts, film covering cold-resistant seedlings, with high costs and labour costs. Nutrient seedlings, thin membrane protection, seedling planting, low cost and good results. Nutritional seedlings reduce the disease by 15 days ' early harvest, increasing production by 20 to 40 per cent. The introduction of nutritional seedlings in summer and autumn can also reduce the incidence of the disease during the nursery period, nurture the seedlings, harvest them early and increase yields and the number of replants。
Three, plant adjustment
Following the 5-6 sections of the melon plant, the length of the tubing is extended, each section has a roll of swabs, which are shown to help climb and grow, thus requiring a set of chickens. It's in the same way as a cucumber. The setting of chickens requires timeliness, integrity, balance and stability. The unit area production of the melon consists of the number of plants planted, the number of results per plant and the weight of single fruit. Under certain dense-planted conditions, output per unit area is determined by the number of fruit and the weight of single fruit. Each fruit and single fruit weight is closely related to plant adjustment and harvesting techniques。
The production of smelts is mainly the production of the fruit of the main chicken, but the production of the fruit of the chickens plays an important role in the post-harvest period. It is therefore important to nurture strong chickens and to have them properly selected. By the early stages of the results, all the chickens were removed in time. (c) centralization of the bronchion to ensure the outcome of the bronchion; the subsequent selection of the upper and upper part of the plant to maintain the greater assimilated area and efficiency of the plant, increasing the later results and increasing production。
4. Fertilizing irrigation
They have a strong absorptive capacity and are vegetables that require more nutrients and moisture. For the three elements, there is a need for a continuous supply of nitrogen fertilizer and a gradual increase in usage and concentrations, and for increased phosphorus fat after flowering, in order to maintain good leaf growth and continuous results. It is generally applied at around 1,000 kg per 667 m2 of pig and cow dung and grass-wood ash, either in front of the seeding or on its way. Fertilizers are used at concentrations of about 10-15 per cent for pre-premiums, about 30 per cent for chickens and about 40-50 per cent for flowering, usually every 5-7 days. Fertilizers can also be used in pig and cow urine, ammonium sulphate or urea, or in combination. It is advisable to apply about 500 kg of compost from pig and cow dung and grass ash at the beginning of the flowering results, or 30 to 50 kg of chicken duck hair, peanuts, etc. At the time of application, the plant can be used in a ditch to provide sufficient nutrients for the flowering results。
Fertilisation also changes according to specific climatic conditions. The pre-spring period is low, and the nursery period should contain fat water, inhibit growth and increase cold resistance. High summer melon temperatures, high rainfall, high humidity, faster growth of seedlings, easy growth and disease, control of fatty water, inhibiting growth and nurturing of strong seedlings; and high rainfall during periods of growth, which does not allow for fattening, should be observed in order to increase the application of base weight. Autumn guacamole has a short and suitable growing season, which must be followed up early after the onset of the real leaf, which promotes early and rapid growth, lower temperatures and more difficult growth and results, and should be followed up with extra diligence to ensure production。
The melons need to have less water before the chicken season, and, except for the autumn melons, spring and summer melons control fatty water and inhibit the growth of leaves. More moisture is required after the flowering results and soil moistation should be maintained on a regular basis. The melons are wet, but they are not water-resistant, so they should choose a convenient place to drain. Areas with heavy summer rains, high humidity, low sunlight and high temperatures are more likely to choose fields with open terrain, ventilation and good drainage。
