Planting technique of shallow lotus root

First of all, select the fields with strong fertilizer and water conservation capacity, convenient drainage and irrigation and soil pH value of 6-7, and select the species with strong, hypertrophic, more than two nodes, full and intact terminal buds and undamaged lotus root nodes. Then, arrange the fields, plant lotus root for disinfection, and sow seeds when the average air temperature reaches 15 ℃ or the water temperature in the pond is kept above 5 ℃. Finally, do a good job in the management of lotus root fields.

The main results are as follows: 1. Select the field with strong fertilizer and water conservation capacity, convenient drainage and irrigation and soil pH value of 6 to 7. After selecting a good piece of land, we should first plough and build a solid ridge of the field, apply basic fertilizer, and rake flat in time, so as to make the soil muddy.

2, choose seed lotus root: choose strong and fat lotus root, at least two or more nodes, the terminal bud is full and intact, the back handle node is stout, and the lotus root node is not broken. After selecting the species of lotus root, disinfect the seeds with 50% carbendazim wettable powder 50 grams of water dilution spray solution for 24 hours.

3. Sowing time: sowing when the average air temperature reaches 15 ℃ or the water temperature in the pond is kept above 5 ℃. If sowing too early, the temperature is too low, sprouting slowly, easy to rot lotus root; if sowing too late, it will affect the late yield.

4. Sowing method: open an oblique ditch by hand, deep 13~15cm, tilt the lotus root head down, and then tilt it slightly on the surface of the water. The planting density is 0.8m between plants and 2m between rows, and the head of the lotus root is arranged in a cross shape, that is, the head of the first plant is to the left and the second plant is to the right.

5. Lotus root field management

(1) Seedling growth period: the water level in the field was kept at 5-10 cm; the water plants should be removed in time from sowing to the first standing leaf; topdressing should be carried out in time after the first standing leaf came out of water, and calcium superphosphate 30kg was applied per mu, and then sprayed to the plant with sprayer every half a month.

(2) the vigorous growth period of stems and leaves: the water level in the field should be kept at 25-30 cm; after the emergence of "rear leaves", topdressing should be done in time, and the soil should be touched every half a month with urea 30 kg; per mu, weeding and floating leaves should be picked in time.

(3) Pest control: the main pests in lotus root fields are Spodoptera litura and aphids. Spodoptera litura is sprayed with 100 g of 90% trichlorfon per mu and 10 g of 50% aldicarb wettable powder.