Technical points of 1. 1
Strengthen the management of early-maturing cultivation of lotus root, promote the expansion of lotus root, and ensure the early yield and benefit. Conventional management of late rice.
Key points of lotus field management: ① Choose early and middle maturity varieties, such as E 'an 1, E 'an No.5, Wuzhi No.2 ... ② Reasonable close planting, with a conventional seed consumption of about 450kg per 667 square meters. ③ Apply sufficient base fertilizer and early topdressing, apply 100kg ammonium bicarbonate, 50kg phosphate fertilizer and 15kg potassium sulfate compound fertilizer to 667 square meters, and apply as much organic fertilizer as possible. When vertical leaves appear, topdressing urea 15 kg every 667 square meters. (4) Because the base fertilizer in lotus root field is sufficient, late rice can be applied with little or no base fertilizer.
1.2 economic benefits
In mid-July, the lotus root was dug, with a yield of 900 kg, a price of 2.6 yuan/kg and an output value of 2340 yuan. The yield of 667 square meters of late rice is 450kg, 1.6 yuan /kg, and the output value is 720 yuan. The total output value of 667 square meters in two seasons is 3060 yuan, and the annual profit is 2300 yuan after deducting the production cost. The average yield of mid-season rice per 667 square meters is 650kg, 1.8 yuan /kg, the output value is 1 170 yuan, and the profit is 800 yuan. Compared with one-season mid-season rice, this model can increase the benefit per 667 square meters 1500 yuan.
2 early lotus root-Artemisia (Artemisia)
After digging the lotus root, plant Artemisia selengensis again. Lotus root is cultivated in heat preservation facilities, sown in early March, and excavated in stages from early June to early July; Artemisia selengensis was planted in early August and harvested from late June to April of the following year (covered with heat in winter). This is a new model popularized and applied in recent years, with an area of over 730 hectares in 2006.
2. 1 technical point
(1) adopts shed or middle shed, and adopts steel shed with a width of 6.0m, a height of 2.5m and a length of 50m. The middle shed is made of bamboo bows, with a width of 3 ~ 3.5m, a height of 1.5 ~ 1.7m and a length of 20 ~ 30m. The north-south direction of the shed is conducive to ventilation. Due to the large investment in greenhouse, most of Caidian District adopts middle shed at present.
② Early-maturing and middle-maturing lotus root varieties, namely, Erian 1 and Erian 5, were selected; Planting time is early, sowing in early March, earlier than open field 1 month; Increase the planting density and use 450kg seeds per 667 square meters; Apply sufficient base fertilizer and topdressing in the early stage, apply 75 kg of ternary compound fertilizer every 667 square meters, and topdressing urea 10 kg; When vertical leaves appear; Mining the listing in time is generally divided into two times.
(3) In early July, Artemisia selengensis, after harvesting lotus root, drained the field water, aired the field for 20 days, then plowed and raked the soil, and applied 3000 kilograms of decomposed organic fertilizer every 667 square meters. Erect enclosure ditch and partition ditch, the ditch depth is 25cm, the partition width is 1.2cm, the cuttings are cut in early August, and the cutting length is 8 ~ 10 cm, with two full axillary buds that have not yet germinated. Immediately after cutting, water 1 time and cover with sunshade net. Irrigation should be done frequently to keep the border moist, furrow irrigation should be appropriate, and topdressing should be combined with irrigation. 165438+1In late October, cover the film to keep warm, and the temperature in the shed will be 18 ~ 20℃. Pay attention to uncovering the film for ventilation and humidity reduction. 5 crops can be harvested from 1 year to April of the following year.
2.2 Economic benefits
The 1 digging time of lotus root is in early June. The output of 667 square meters is 450kg, 8.0 yuan /kg, and the output value is 3600 yuan. The second excavation was conducted in early July, and the output of 667 square meters was 400kg, 3.0 yuan /kg, and the output value was 1200 yuan. The output value of 667 square meters of lotus root harvested twice totaled 4800 yuan. After five harvests of Artemisia selengensis, the yield of 667 square meters was 3000~4000kg, and the output value was 4 100 yuan. The total output value of 667 square meters of lotus root and Artemisia selengensis in two seasons is 8900 yuan. After deducting the production cost, the profit can reach 6570 yuan. Compared with "greenhouse lotus root rice", this model increases income by 2,900 yuan per 667 square meters. This model requires a certain amount of investment and more labor, but it is efficient and can solve the contradiction between large population and small land.
3. Multiple cropping lotus root (lotus root-lotus root)
Double-cropping lotus root is a new lotus root model with two harvests: 1 year, which was invented by caidian district Henong and patented in 200 1 year. This second season lotus root has the characteristics of white lotus root body, even lotus root nodes and crisp and sweet taste, which is well received by the market. In the second season, the lotus roots can ripen early until mid-June, and get higher price and benefit, if some seedlings are left in the field and field management is strengthened in time. In 2006, the area of double-season lotus root in this area was 1200m2.
3. 1 technical point
① Early-maturing variety Erian 1 was selected, which was 15 ~ 20 days earlier than middle-maturing variety Erian 5. In mid-June, seasonal lotus roots were dug 1 and big lotus roots were put on the market, while small lotus roots were reserved as second-season seedlings and transplanted into the field in time. In the second season, 900 seeds were used in 667 square meters, with effective buds 1200,11~ 65438+February. Strengthen field management in time in the following year, dig again in mid-June, and circulate year by year.
(2) Because the lotus root in 1 season is the original seedling of lotus root last autumn, the seedling emergence speed is faster than that of transplanting. If the management of water and fertilizer is strengthened in time, the lotus root can expand in late May. Combined with intertillage weeding before emergence, 100 kg ammonium bicarbonate, 50 kg phosphate fertilizer, 20 kg potassium fertilizer, 2 kg boron fertilizer, 1 kg zinc fertilizer, 5 kg carbendazim and 20 kg urea were applied after 667 square meters.
In the second season, lotus roots should be fully fertilized, with 500 kilograms of bio-organic fertilizer and 50 kilograms of compound fertilizer, with an area of 667 square meters. When 1 vertical leaves appear, urea 15 kg was applied to 667 square meters.
③ Focus on controlling Spodoptera litura in autumn, and keep the water depth above 10cm in winter to prevent freezing injury.
3.2 Economic benefits
1 season, the output of 667 square meters of lotus root is 750kg, with an output value of 3,000 yuan. In the second quarter, the output of 667 square meters of lotus root was 450kg, with an output value of 1800 yuan; The total output value of lotus root in two seasons is 4800 yuan per 667 square meters, and the average profit per 667 square meters is 3700 yuan after deducting the cost. This model has less investment and high benefit.
4 early lotus root and water chestnut
The planting mode of "early lotus root-water chestnut" in Caidian area has a long history. In 2006, the extension area of this model was 1 1,000 hectares.
4. 1 skills