lotus root plastic film planting method: select the right variety
First, select the marketable variety according to the local market situation. For example, Wuzhi No.4 can be selected as the fried food, and the local Changbai lotus root can be selected as the hot-pot variety. You can also choose dual-purpose high-yield varieties, such as Elian 4. Secondly, according to the planned listing period, select improved varieties with suitable maturity. If you want to go public early, you can choose early-maturing and very early-maturing varieties such as June explosion; If high yield is the goal, better varieties with longer growth period should be selected.
lotus root plastic film planting method: apply sole fertilizer to the whole layer
Practice has proved that planting rice in cold soaking fields and muddy lake fields with deep mud feet is slow, low in yield and poor in benefit, but planting lotus roots with plastic film is easy to drain lotus roots, high in yield and good in benefit. However, the content of available nutrients in this field is low, especially phosphorus and potassium deficiency. Plastic film lotus root has great potential to increase production, and it also needs a large amount of fertilizer, and the demand for phosphorus and potassium fertilizer is even greater. Therefore, in order to achieve high yield and high efficiency, it is necessary to apply foot fertilizer and farmyard manure. Generally, 3 ~ 4 kilograms of high-quality decomposed farmyard manure (chicken manure and fire manure rich in phosphorus and potassium are the best), 1 kilograms of calcium superphosphate, 2 kilograms of potassium sulfate and 3 kilograms of urea can be applied to every 667 square meters. In order to raise the mud temperature, adjust the soil pH value and reduce the diseases of lotus root field, 1 kilograms of quicklime should be applied to the cold rotten and sour fields every 667 square meters. After fertilization, plow and harrow deeply, so that the mud and fertilizer are mixed evenly and the mud is leveled, and then lift the compartment with a width of 2 meters, with a width of 17 cm, a width of 3 cm and a depth of 2-25 cm.
Lotus root mulch planting method: Ultramicro-film
Lotus root mulch is selected, and the mulch should be a powerful ultramicro-film with a thickness of .5 mm and a width of 17 cm, and the amount of film used for 667 square meters is 3. ~ 3.5 kg. Choosing this kind of mulch film not only saves investment, but also can automatically pierce the mulch film when the lotus root tip comes out of the water, so it is not necessary to manually break the mulch film and transplant seedlings.
membrane laying should be done immediately after lotus root drainage. When paving, first tie one end tightly, then roll the whole bundle of mulch film close to the compartment surface, so that the mulch film will be laid flat on the mud surface, and then plunge the edge of the mulch film into the mud by hand to ensure that it is sealed tightly to prevent the mulch film from floating or being blown by the wind after irrigation.
planting method of lotus root with plastic film: timely arranging lotus roots and reasonable close planting
The lotus root field is covered with plastic film. Due to the increase of mud temperature, lotus roots can be arranged 15-2 days earlier than the conventional time. The specific time of lotus root arrangement is generally from the middle and late March to the early April. After the lotus root field sinks, choose sunny days to arrange lotus roots. The specific method of arranging lotus roots is as follows: two rows of lotus roots are placed in each compartment, with the lotus heads facing the same direction as the row, the distance between the two rows of lotus roots is 1 meter, the distance between the rows of lotus roots is about 1.3 meters, and about 5 lotus roots are arranged in 667 square meters, each with an average weight of .5 kg, and about 25 kg of lotus seeds need to be selected in 667 square meters. When arranging lotus roots, press the lotus root handle slightly upward and the lotus root head into the mud, and the lotus root tip and tail are flat with the mud surface, then smooth the mud on the compartment surface, clean up the stubble on the compartment surface, and prevent the plastic film from being punctured during film laying.
The lotus roots in Tian Ji have been continuously cropped, and the diseases and pests in the lotus root fields that have been continuously cropped for many years are serious, so the lotus seeds must be treated with chemicals before planting. If pest control is the main method, a layer of mud mixed with pesticides (such as phoxim) for treating underground pests can be hung on the surface of the seed lotus before it is discharged; If disease prevention is the main task, we can prepare the liquid medicine of Zhuanyiling, Luheng No.1 and agricultural streptomycin before discharging the lotus root, and spray it evenly on the lotus root seeds to disinfect and prevent it in advance.
planting method of lotus root with plastic film: paying attention to topdressing
because of the sufficient amount of base fertilizer, lotus root with plastic film is generally not topdressing in the early stage. To the vigorous growth period of lotus root, it is necessary to apply topdressing once again, generally 2 ~ 25 kilograms of urea and 5 kilograms of potassium sulfate are applied to 667 square meters. The fertilizer can be directly sprinkled on the surface of the compartment, poured into deep water and tied tightly in the field, so that the water will naturally dry and the fertilizer will penetrate into the mud with the water. Lotus seeds such as explosion in June, due to early excavation and short growth period, are generally not topdressing after re-applying base fertilizer.
lotus root plastic film planting method: scientific water management
The water management of plastic film lotus root during the whole growth period should be based on? Shallow? Deep? Shallow? Proceed. In the early stage of lotus root drainage, the air temperature, water temperature and mud temperature are low. In order to give full play to the warming effect of plastic film, irrigation should be shallow to keep the ditch full of water and the film surface covered. Flower water? That is, it can promote the early emergence and rapid growth of lotus root and expand the area of green leaves. In midsummer, when the temperature is too high, it is advisable to irrigate deep water and keep the mud temperature constant to facilitate the growth of lotus roots. It is advisable to keep shallow water from the late growth stage to before digging the lotus root, so as to promote the expansion of the lotus root and increase the yield. However, in case of stormy weather during the growth period, deep water should be poured in time to protect the load and prevent the load stalks from breaking.
planting method of lotus root with plastic film: prevent pests and diseases
aphids are the main pests of lotus root with plastic film in the early stage, so it is easy to control them. After discovery, it is enough to spray efficient pesticides such as Wanling and Lesiben in time, and it is harmful to focus on aphid clustering on the back of tender stems and leaves. Root-eating golden flower worm (commonly known as? Root maggot ) the damage is serious, and its larvae often cluster in the mud at the lotus root nodes, which leads to the lotus leaf dying in pieces, especially in the lotus root field after years of continuous cropping. When such pests are found to be harmful, carbofuran granules should be stuffed in the lotus root node where insects are estimated in time, which can achieve good control effect. In addition, clearing weeds in the field also has a certain effect on pest control.
It is difficult to control lotus root diseases in the later stage, so prevention should be given priority to and comprehensive control should be implemented. Specific measures include insisting on crop rotation, cleaning and disinfection, chemical treatment, formula fertilization, reasonable close planting and scientific water management. Leaf diseases can be prevented by spraying broad-spectrum fungicides such as carbendazim, thiophanate methyl and chlorothalonil. After the lotus field is covered with plastic film, as long as the plastic film is tightly attached to the mud and tightly covered, there are very few weeds, just step the weeds in the ditch into the mud. Lotus root plastic film planting method: timely excavation