The season and sip of fruit maize are growing twice a year in the yangtze river, growing in early march, reaching about 20 days of age, moving from late march to early april and maturating in early july. In the case of greenhouses, the nursery period can be advanced to mid-february and the harvest period to mid-june, with greater efficiency. The second sweet maize cropping period is determined on the basis of the previous harvest period, but not later than the end of july and is 8-10 days old. In order to achieve balanced sales, large, retail-based farmers can sow in batches at intervals of 5-6 days. In the case of wholesale sales, there is no need for batch planting. Local planting should be avoided between 10 may and 20 june, as much as possible, in order to prevent high temperatures and undermining the flowering season。
Ii. Leaching seedlings
Fruit corn seeds are more expensive, and impregnated seedlings can increase the growth rate, conserve seeds and reduce farm capital. The method of leaching seed: 4-5 plants are impregnated with hot water of 25-28°c, leached, wrapped in wet towels, placed in incubators of 32-34°c, 30-36 seedlings, seeded and seeded. At the time of the planting of the two corns, the external temperature was high, with a high temperature of 4-5 permafrost followed by a constant temperature so that they were leached, spread over the wet towels, covered with wet towels, and naturally sprung, which could normally be sowed after 30. Fruit and corn impregnation times must be strictly controlled, short, and they are sprouted in an irregular and excessive manner, resulting in bad seeds and low seeding rates. In general, 500-600 grams per acre are grown。
Iii. Cultivating seedlings
The drying of fruit and maize seeds and the low rate of live seeding are not only a waste of seed but also a disservice to seedlings, whole seedlings and seedlings, with implications for subsequent management, harvesting and production. It is therefore essential that fruit corn be grown in a nutritious manner. The nursery is to be applied to base fattening, with human and animal dung being put on every three metres of seedbed before it is aired, with high-efficiency compound fattening, 500 grams of carbon ammonium, and full reverse and fine-tuning after fertilization. Each acre would require 18-20 metres of seedbeds and 3,500-4,000 monotonous. Each seed is soaked with a centimeter. Early spring seedlings cover the membrane after the earth is covered with a bow covering two layers of membranes. After seedlings are produced, membranes are extracted, which are managed by reference to the general management of cotton seedbeds. The two sweet corns are sowed in high temperatures that they are strictly forbidden to cover thin membranes, then covered with straw or wheatgrass, protected against water spills and heavy rains, and released in time to remove the cover, often watered during drought. Pre-spring corn leaves were grown at the age of three, followed by replanting 2. 5。
Iv. Location and preparation of daejeon
Fruit corn is a pollinator crop, and the flower season cannot coincide with conventional corn or fodder corn, otherwise the string of powder can affect quality. Distance spacing and spacing are commonly used, i. E., distance between plots growing fruit corn and other maize is more than 200 metres away, and spacing between births is more than 20 days from the flowering period of fruit corn and other maize. The two-strength maize fields that are grown in a year choose either winter fields or vegetable fields that can be used in early march. Daejeon lays the sample at a scale of 2. 8-3 metres, digs up the water system and tans the fertilized soil at an early stage. 7-10 days prior to the transfer, 30-50 kg of complex fattening, 25 kg of ammonium carbon and 50-80 loads of organic fattening per acre of cylindrical gills were imported and evenly doubled and evened。
Specification and quality of transplantation
The fruit corn field is planted with a wide narrow range of 1. 2-1. 4 metres, a narrow line of 0. 5-0. 6 metres, with a distance of 30-35 centimetres, with an acre of about 2,800 acres, with a small overstick type and prone to balding. Excessive influence on production. When shifting plants, care is taken that the leaves stretch in a vertical direction, which facilitates ventilation and light. Spring planting, covering the membranes in narrow row positions, can lead to an early fertility period of about five days, and summer cover of the membranes can reduce weeding, improve the soil environment and promote maize growth. At the time of planting, the acres were fed with high-efficiency compound fats of 3 to 4 kg, followed by thin soil protection and water for solidarity。
Scientific management
After the live tree, the acre is fed with 10 kg of carbon ammonium plus 20 kg of human and animal dung, 10 kg of urea or 20 kg of carbon ammonium is applied to the acre for urea, and male flowers are pumped out of the foreground for high-efficiency compound fattening 20 kg + 10 kg of urea for seed fat. The water system is carefully cleaned and pine, weeds are ploughed in due course. High temperatures in the pre-accumulative periods of corn in the second fall, rapid growth of maize and corresponding early management measures, with a slightly higher level of fertilization than in the previous corn, have enabled higher yields。
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