Cultivation techniques of sticky corn
In order to improve the quality of sweet sticky Early Maturing Maize, the cultivation techniques in protected field were applied plant Benefits. Kennian No.1 or other superior varieties of sticky corn were selected, and the cultivation techniques of delaying, taking measures and suitable period were applied to harvest green ears and increase the value of kernel processing plant Benefits.
1. Early cultivation
1.1.1 variety selection
The early maturing sweet sticky corn varieties with good quality, good palatability, and tolerance to low temperature were selected.
1.1.2 seed treatment
The results showed that the small, damaged and not full seeds should be removed manually, and the seeds used should be uniform; 5-7 days before sowing, the seeds should be sun dried for 2 days in sunny days; the bud length should be no more than 2 mm for the seeds with accelerated germination.
1.1.3 sowing and seedling raising
The nutrient soil can be made up of 35% high-quality farmyard manure and 65% harmless dry land fertile soil. Each cubic meter is evenly mixed with 15% compound fertilizer containing 1-1.5kg of nitrogen, phosphorus and potassium. It is used for seedling cultivation. The seeds were sown in early April, and the bottom water was poured before sowing. After sowing, the seeds were covered with 1.5cm fine soil and covered with a layer of plastic film.
1.1.4 seedbed management
When the temperature in the greenhouse is lower than 15 ℃ at night, heat preservation measures should be taken; the plastic film should be removed timely after seedling emergence; the suitable temperature for seedling growth is 20 ~ 25 ℃, and water management should be strengthened.
1.1.5 transplanting shed
The shed should be closed about 30 days before transplanting, and transplanting about May 10 after the final frost. The distance between ridge and plant is 55 cm, the plant spacing is 26-28 cm, and about 4500 seedlings per 667 M2 are preserved.
1.1.6 greenhouse management
When the temperature of the greenhouse reached above 25 ℃, ventilation was started in time, and the film was removed at about 17 leaf stage. Artificial weeding, tillering and surplus young ears should be removed in time, leaving only the top one ear. In case of drought, water should be irrigated in time.
1.1.7 timely harvesting
About 28 days after pollination, the green panicles were harvested for about 7 days per 667 m2 and 4000 ears per 667 m2. About 90 days after emergence to harvest.
1.1.8 plant benefit
The yield of 667 M2 is 8000 yuan, the input cost of 667 M2 is 2500 yuan, and the net benefit of 667 M2 is 5500 yuan.
1.2 small shed seedling raising and plastic film transplanting mode
1.2.1 variety selection
The early maturing sticky corn varieties with good quality, strong stress resistance, high tolerance to close planting and approved for popularization were selected.
1.2.2 sowing and seedling raising
The seedling raising method can be pot sports seedling or nutrition block seedling. The seedlings were raised in two stages on April 15 with an interval of 5-10 days.
1.2.3 transplanting and mulching
From May 10 to 15 after the final frost, transplanting should be started from May 10 to 15. The land with medium fertility should be selected as the transplanting field, and the cultivation depth should reach the cultivation standard of more than 25 cm. Combined with soil tillage, 3m3 high-quality agricultural fertilizer was applied to 667m2 soil, and 25kg high-quality compound fertilizer with total nutrient content more than 45% was applied in 667m2. The plant spacing was 28-30cm and the planting distance was 66 cm. When transplanting, the water consumption was 1.25kg/hm2 and 4.2t/667m2. Cover with plastic film after transplanting.
1.2.4 field management
When tillering occurs, tillering should be removed in time, generally 2-3 times. Take good care of the plastic film. In the bell mouth stage, a certain amount of available nitrogen fertilizer should be supplied in a timely manner. The young ear was removed 2-3 times during the growth period, and only the uppermost ear was retained. Irrigate when dry. In the first and middle of July, Trichogramma was used to control Ostrinia furnacalis.
1.2.5 timely harvesting
After July 20, the harvest time of 667 M2 was about 7 days, and the harvest time of 667 M2 was about 3 200 ears. About 95 days from emergence to harvest.
1.2.6 planting benefits
The net cost of planting is 2800.667 yuan per square meter, and the net profit is RMB 660.660.660 yuan per panicle.
1.3 film mulching mode
1.3.1 variety selection
Kennian 1, Jinnuo 205 and other excellent sticky corn varieties were selected.
1.3.2 sowing and mulching
On April 25, it began to be divided into two stages of germination, water setting and film mulching cultivation. Combined with fine soil preparation, 10 kg of diammonium, 5 kg of potassium sulfate, 15 kg of urea, or compound fertilizer with the same nutrient content were applied to 667 m2, and artificial cultivation was carried out, with spacing of 65-68 cm and plant spacing of 30 cm. After sowing, chemical herbicides were sprayed to close the weeds. The dosage was 2 / 3 of that of direct seeding cultivation, and then covered with plastic film. The plot selected for plastic film mulching must be above medium fertility, and can not be continuous cropping.
1.3.3 field management
Take good care of the plastic film in the field. Pay attention to antifreeze. When the seedlings grow to one leaf, one heart to two leaves, the film should be broken in time to introduce seedlings. Timely check the field, protect film and remove tillers.
1.3.4 timely harvesting
The green ears were harvested about 28 days after pollination. The harvest time of 667 square meters was 7 days. The harvest time of 667 square meters was 3000 ears. About 95 days from emergence to harvest.
1.3.5 planting benefits
The average selling price per panicle is 1.3 yuan, the output value of 667 square meters is 3900 yuan, the planting and selling cost of 667 square meters is 1500 yuan, and the net benefit of 667 square meters is 2400 yuan.
2. Delayed cultivation
2.1 variety selection
Good varieties of sticky corn with growth period of about 115 days were selected.
The sowing time of the second stage should not exceed June 20 at the latest, and the interval between the two periods is 5 days. Before sowing, according to the soil moisture content, 25-30kg of corn special fertilizer (the total nutrient content of nitrogen, phosphorus and potassium ≥ 45%) was applied once every 667 m2. From June 10 to 20, mechanical sowing was carried out with ridge spacing of 65-68 cm and plant spacing of 30 cm.
2.3 field management
Strengthen field management.
2.4 timely harvesting
Around September 20, the harvest time of 667 M2 was 7 days, and the harvest time of 667 M2 was 3 000 ears. About 95 days after emergence.
2.5 planting benefits
The average price per panicle is 0.8 yuan, the output value of 667 square meters is 2400 yuan, the planting and selling cost of 667 square meters is 1200 yuan, and the net benefit of 667 square meters is 1200 yuan.
Three measures for cultivation
3.1 variety selection
Kennian 1, jingkenuo 2000 and other excellent sticky corn varieties were selected. 3.2 sowing
Kennian No.1 was planted in three stages from May 10 to June 20. The interval of each period was 8-10 days, the ridge distance was 65-68 cm, and the sowing density was 28 cm. The farmers who choose jingkenuo 2000 should sow before May 15. Because of the long growth period of this variety, it can only be used for harvesting green ears and planting in our area, and it can only be sowing for one time.
3.3 isolated planting
In order to ensure the good marketability of green ear of sticky corn, the plots sown before May 10 to June 5 must be isolated and planted separately from ordinary corn fields with the shortest isolation distance of 200m. If the distance isolation is difficult, the planting structure can be optimized, and the scale planting of sticky corn or spacing planting with rice and other crops can be carried out.
3.4 field management
Field management should be carried out as early as possible. In time, shovel, fix seedlings, fertilize, intertillage in time, resist periodic drought and lodging. Chemical control technology can be applied to the plot where jingkenuo 2000 is planted and over vigorous growth. Scientific application of chemical control can promote early maturity, prevent lodging and promote yield increase. Timely control of diseases and insect pests.
3.5 timely harvesting
Sticky corn ears can be harvested in time 22-28 days after silking and pollination, i.e. in the middle and late stage of milk ripening, 3000-3200 ears can be harvested in 667 m2.
3.6 planting benefits
It can be harvested directly according to different harvest seasons or harvest time of 3000 m2. The average price per panicle is 0.8-2 yuan, and the output value of 667 M2 is 2400-6000 yuan.
4. Suitable cultivation period (Harvest seeds and process sticky bean bag)
4.1 variety selection and sowing
Kennian No.1 was selected. It was sown from May 5 to 10 with a plant spacing of 30 cm. Demonstration and promotion of 110cm large ridge double row transparent dense planting cultivation mode. The key points of cultivation are as follows: the depth of cultivated land is more than 30cm by using matching machinery. From the first ten days of April to the sowing of Cotoneaster seeds 2-3 times. Good varieties with strong density tolerance by mechanical sowing. According to the planting density, increasing the amount of fertilizer reasonably can increase the density of the same variety by 10% ～ 20% and increase the density tolerance by 30% compared with the conventional planting. Timely sowing, depending on the soil moisture, using germination and water seed or water filter. The sowing quality should be guaranteed. The results showed that there were 110cm ridge spacing, double row and 40cm row spacing on the ridge, 28-30cm single row spacing, 3700-4100 seedlings per 667 m2. Strengthen cultivation management, use high stalk sprayer to control Ostrinia furnacalis with chemicals, timely control the diseases and insect pests, and timely spray irrigation in case of drought. Strengthen the field management in the later stage, and cut off the empty stalks, invalid plants and large grass in the field in the first ten days of August. Collect at the right time and late.
4.2 isolated planting
It should be planted in isolation from ordinary corn fields, with an isolation distance of more than 300m.
4.3 field management
Field management should be strengthened during the growth period. In particular, timely control of corn borer should be carried out.
The harvest began around September 25, with a yield of about 550Kg per 667m2.
4.5 planting benefits
The output value of 667 square meters is 4889.5 yuan, the selling cost of planting and processing is 2100 yuan, and the net income of 667 square meters is 2789.5 yuan.