Field management of aquatic vegetables

In recent years, with the continuous adjustment of the rural agricultural industrial structure, the living standards of urban and rural residents have been increasing, and the demand for fresh vegetables rich in fiber is growing. From the beginning of the 21st century, Tonglu County, Zhejiang Province developed and utilized 1,333 hectares of low-yield paddy fields to develop aquatic vegetable white production. In the past few years, the average output value per 667 square meters has reached 5,000-8,000 yuan. The rural planting structure has been improved, agricultural efficiency has been increased, and farmers have increased their income. The field production management of aquatic vegetables and its high-yield cultivation techniques are briefly described below.

First, the characteristic characteristics of chalk

It is a perennial aquatic perennial herb of the genus Paeoniae. The white edible rate is 45%, and the nutrients contained in every 100% edible part: moisture 92.1g, protein 1.5g, fat 0.1g, carbohydrate 4.6g, calories 25kcal, crude fiber 1.1g, ash 0.6g, calcium 4mg Phosphorus 43mg, iron 0.3mg, thiamine 0.04mg, riboflavin 0.05mg, niacin 0.6mg, ascorbic acid 3mg and trace carotene.

茭White hi is warm, moist and rainy. The germination temperature is 5 °C, the temperature is 15-20 °C, and the plant temperature is 20-30 °C. More than 30 °C is difficult to become sputum, the growth temperature of sphaerobacteria is 25 °C, 茭 white requires deep soil layer, fertile soil, rich in organic matter, loose soil and moderate loam, water source should be sufficient, drainage and irrigation should be convenient.

Second, the main varieties

White is divided into double seasons and single seasons. Double seasons can be harvested twice after planting in spring. The first time is called "Qiuqi" from September to the end of November of the year, and the second time is from early May to mid-June of the following year. When the spring silkworm silky silky knots, it is also known as "cocoon." The single-season tussah planting season was harvested in the first ten months of the year from September to October. It is estimated in August according to the lunar calendar, hence the name “August 茭”.

1. Intermediary. It is native to Wuxi, Jiangsu Province, and is medium-ripening. The plants are tall, strong in growth, and the temperature of pregnancy is relatively large. Spring is listed in May-June, and autumn is listed in September-October. The meat is long in shape, the meat is white and tender, and it is large, but the skin is slightly wrinkled and green, and the appearance of the product is not as good as the shuttle.

2. Shuttle 茭. Originally produced in Hangzhou, Zhejiang, late maturing, double seasons, plant height 2m, meat is large and obese, the middle of the big two tips, good quality, spring 上市 from the end of May to June, the autumn 茭 from October to November.

3. A little red. It is native to Hangzhou, Zhejiang Province. It is late-maturing and has a single season. The outer shell of the leaf sheath has purple-red spots. The side of the meat is often flushed. The harvest period is from late September to late October.

4. Ivory. It is native to Hangzhou, Zhejiang Province. It is a medium-season glutinous rice plant with a short planting and strong growth. The meat is shaped like a stick, the color is white as ivory, and the quality is good. The harvesting period is from early September to early October.

Third, cultivation techniques

In the area of ​​Jiangsu and Zhejiang, the single season is planted in the spring, and the double season can be planted in spring or autumn, mainly in spring.

1. Tilling and applying fertilizer.茭白 should pay attention to rotation, after rice harvest, dry the field water, deep ploughing for leisure in winter, apply the base fertilizer (organic fertilizer 3000kg) before the Qingming next year, then plough up and mash, smooth and then apply 1000kg per 667 square meters of manure Make a face fertilizer, do Tianping, mud, fat feet.

2. Timely transplanting, reasonable close planting. Before and after the spring planting season, before and after the Qingming period, the mud will be dug up and the old pier will be dug up with a sharp knife. The small pier will have old stems and stolons and new ones. 4 to 5 strains of new seedlings are planted. If the new seedlings are large, 2 to 3 strains of seedlings per small branch can also be used. When digging, following, and planting, if introduced from other places, the transportation process should pay attention to moisturizing.茭 white seedlings can be inserted in the shape of plum blossoms, the plant spacing is 1m, the row spacing can be divided into large and small rows, the row spacing is 0.5m, the small row spacing is 0.4m, and every 4 rows requires an operation track (width is 1m) for the cultivation and harvesting. use. It can also be inserted at an equidistant distance of 40 cm × 80 cm.

3. Management of the new Putian. (1) Water layer adjustment: When planting, the water is deeper, about 7~10cm, the purpose is to protect the seedlings, after 5-6 days, put it shallow to 5~7cm, in order to facilitate the temperature rise, the water layer gradually deepens after each tillering. After the secondary fertilizer release, it is advisable to wait for the fertilizer to be inhaled into the soil for re-irrigation. During the typhoon and rain season, it is necessary to pay attention to drainage and prevent the stem from being elongated. In the late harvest period, the water temperature is low, and the irrigation should be slightly shallower for the harvest; after harvesting It should gradually fall back to 3 ~ 6cm, the field into the shallow water or gradually wet into the winter, can not be dry. (2) Topdressing: Generally, the seedling fertilizer is applied 10 days after planting, and the manure is applied for 500-1000 kg per 667 square meters. After 10 days, the fertilizer is applied, and the manure is applied for 1000-1500 kg per 667 square meters until the beginning of June. In the future, Qi Bai has already carried out the peak period of tillering, and generally no longer topdressing, so as to avoid a large number of ineffective tillers. By the middle and late August, when 30% of the mounds or 20% of the plants have been pregnant, 3,000 to 4,000 kg of human manure per 667 square meters is used to “suck the manure” at a distance of 10 to 16 cm from the plant. Into avoid injury. (3) Weeding in the field, peeling the yellow leaves: From the white planting to the ridge, we must weed the grass 2 to 3 times, loosen the soil, and bury the weeds in the rows. In the heat and the autumn, the yellow leaves of the base of the plant are peeled off, and the stripping leaves are required to be “stretched and not pulled”, so that the field is ventilated and light-transmitted, and the temperature is lowered to promote the growth of early pregnancy.

4. Old Putian management. (1) Cut the mound to clear the field: When harvesting autumn, the male and the ash plant are found, and the mark is made at any time. After the cold dew, the roots are dug. During heavy snow and winter solstice, dry the field water, cut the dead leaves with mud, so that the next year will be neat and uniform. After cutting off the dead leaves, shallow water should be poured to keep the roots moist and winter, so that the second year will sprout early. (2) Buddy piers, compression piers, dredging piers: In the early spring when the white buds began to sprout, in the old piers in the field, 6 to 8 seedlings were excavated, and the shovel was removed in the last year. The ramets were planted in the larger area of ​​the original pier. The roots of the old clams are dense and the clams are crowded. During the Qingming and Guyu periods, the tillers are 36cm high and the seedlings are spawned. The fine dense tillers are removed. At the same time, press a piece of mud to the root to spread the axillary buds around to improve the nutritional status and make the piers ventilate and transmit light. (3) Topdressing: Xiayan topdressing should be based on quick-acting fertilizer. Before and after the Qingming period, when the seedling height is 9~12cm, the first topdressing is carried out, and 3000kg of manure and urine is applied per 667 square meters. After the fertilizer is inhaled into the soil, the second top dressing is applied, and the manure per 667 square meters is 3000kg. . If the manure is insufficient, urea can be added. However, the application of chemical fertilizers is too much, and the meat is hard and affects the quality.

5. Pest control. The whitening diseases mainly include flax leaf spot, sheath blight and rust. Insect pests are mainly aphids and aphids. Can refer to the same pests and diseases of rice for prevention and control.

6. Harvest. Single-season harvesting is earlier, generally from September to early October, with a yield of 1250-1500kg per 667 square meters, and double-season and autumn harvests are harvested from late September to November. The output per 667 square meters is 1000~1250kg, and the summer sorghum is harvested from May to June. The production of 667 square meters is 2,000~2500kg. In the late harvest of Xia Wei, the temperature is getting higher, the maturity is faster, it is easy to turn green and grow old, and it should be harvested in time. It is best to freshly sell the fresh white. If it is shipped to other places, the water shell should be packaged and immersed in water for one week.

7. Leave (select) species. The white peony is propagated by ramets, and the quality of the seedlings directly affects the rate of crusting, yield and quality. The strains need to be carefully selected year after year, eliminating the "male", "ash" and prone to shell black (that is, the meat containing the sheath is changed from white to green), and the "crawling tube" (the knot is too high) The white plants of the cockroach are selected from the medleys that are neat and tidy, have a perfect knot shape, and have no traits of pests and diseases.

2D Panel Fence

2D Panel Fence

- 1. Because of the simple, beautiful and practical grid structure of double wire mesh fence, it has the function of beautifying the environment. In addition, combined with the characteristics of double wire mesh fence which is easy for plants to climb, it is used for the beautification effect of parks and living communities. - 2. The price of double wire mesh fence net is medium and low, and it is often used for the protection of industrial land, sports field, playground, school and nursery.

2D Panel Fence,Wire Fence Panels,Mesh Double Wire Fence,Double Wire Fence Panels

HeBei Bosen Metal Products Co.,Ltd , https://www.bosenfence.com