Planting skills of High yield of Sweet Corn in early Spring

Planting skills of High yield of Sweet Corn in early Spring

Because of its rich nutrition, tender pericarp and crisp sweet taste, sweet corn is both fruit and vegetable food. It is favored by urban and rural consumers and has become a popular health care green food. With the continuous improvement of people's living standards and the continuous change of dietary structure, the market demand is increasing year by year, and the development prospect is broad.

The planting methods are as follows:

Planting skills of High yield of Sweet Corn in early Spring

1. Raising seedlings

Early spring sweet corn is mainly sold as fresh food in ① variety. The key to improve economic benefit is early marketing time, high quality and high yield. Ultra-sweet corn varieties with early maturity, cold tolerance, high yield and high quality should be selected, such as "Kupla", "good taste", "Jinyin chestnut 818" and so on.

② sowing at the right time can choose to sow and raise seedlings from mid-late December to early January of the following year, and the field stage can effectively avoid the effects of low temperature and frost on growth and development.

Planting skills of High yield of Sweet Corn in early Spring

The way and method of raising seedlings in ③ is to raise seedlings by means of burrowing trays or nutritious checkered soil blocks and plastic film covered with plastic arch shed. Fully sun-sow the seeds for two days before sowing, the seeds can not be soaked and dry seeds can be sowed directly.

The management of ④ seedling stage is to pour enough seedling water after sowing, and the small arch shed is not ventilated mainly to keep warm before emergence. When the seeds germinate and the top soil emerges, the plastic film should be removed immediately to keep the soil moist. The seedling age is 20ml / 25d, and transplant when two leaves are in one mind. 3-4 days before transplanting, the arch shed was opened early and the late cover was ventilated to improve the cold resistance and transplanting survival rate of the seedlings.

Planting skills of High yield of Sweet Corn in early Spring

2. Transplanting

The fields with deep soil layer, convenient transportation and conditions of drainage and irrigation are selected by ① for land selection, soil preparation and application of sufficient bottom fertilizer to achieve fine soil leveling. Apply rotten farm manure 1500-2000kg, corn special compound fertilizer 40kg, calcium 50kg, potassium sulfate 10kg as base fertilizer.

② transplanting specification 1.2m covered furrow soil moisture seed double row, plant spacing 20-22cm, wide and narrow row single plant directional transplanting, enough fixed root water after transplanting to ensure transplanting survival rate, covered with 1 meter wide plastic film.

Planting skills of High yield of Sweet Corn in early Spring

3. Field management

The management of ① transplanting 5 days after transplanting, the seedlings should be checked and filled in time to keep the soil moist and prevent low temperature frost injury. When the seedlings reach the final frost on the top film, choose a sunny morning, draw the "cross" on the top of the seedlings to ventilate the seedlings, safely through the frost period, and draw the seedlings out of the film in time.

On the basis of applying sufficient base fertilizer, ② fertilizer and water management generally requires topdressing three times, the first time to raise seedling fertilizer: before the seedlings are drawn out of the film and not sealed, the mu is irrigated with 10-15kg urea, calcium 20kg, potassium sulfate 3kg mixed with water; the second time in the big trumpet stage: per mu with 20kg urea, calcium 30kg, potassium sulfate 3-5kg mixed with water; the third time is bract fertilizer: when the male ear is out, the mu is irrigated with 10-15kg urea and potassium sulfate 3-5kg. Watering is better for water management in the early stage in order to increase the soil temperature. The water demand during heading and filling period is relatively large, so horse water should be irrigated in real time, and the moisture content should be avoided. During the whole growing period, it is better to see dry and wet, in order to meet the water demand of plant growth.

Planting skills of High yield of Sweet Corn in early Spring

Early breaking of tillers in early spring sweet corn due to low air temperature, partial tillers or multiple spikelets generally occur in early spring sweet corn, so it is necessary to remove tillers and excessive spikelets at noon in a sunny day in order to save nutrients and promote the remaining female spikelets to have enough nutrients.

4. Control of diseases, insect pests and weeds

① disease early spring sweet corn disease is relatively mild, only a few slightly susceptible large and small spot disease, in addition to the selection of disease-resistant varieties, reasonable close planting, 70% methyl topiramate 1000 times can be used to control 1 Mel twice.

Planting skills of High yield of Sweet Corn in early Spring

② pests are mainly underground pests such as ground tiger, corn borer, aphids and so on. The underground pest ground tiger can be applied with 3% "green space insect clear" 3kg mixed with fine soil 20kg pond when transplanting. The corn borer was sprayed with 90% insecticidal Dan wettable powder 30 g twice in the big trumpet stage. Aphids were alternately treated with 3000 times of 70% Amelol or 1500 times of 48% Lexben for alternate control of 1 Mel twice.

③ weeding is carried out by spraying the whole soil moisture surface evenly with Yucaojing or 40% Acetochlor 150ml and water 40kg before transplanting.

Planting skills of High yield of Sweet Corn in early Spring

5. Harvest

The harvest time has a great influence on the commodity quality or nutritional quality of fresh sweet corn. Only when harvested in time can it have the characteristics of sweetness, crispness, tenderness and rich nutrition. It should be harvested when the ear filament dries up and turns dark brown, or about 26 days after pollination, when it is the milk mature stage of grain development, and the sugar content is the highest, so it is the best harvest time. In order to prevent the conversion of sugar and improve its commerciality, it is necessary to harvest and sell on the market at the same time.