In the early spring and late fall of the facility, the two main loquats are planted for more than two months. During the open season, water can be planted with water and pickled vegetables, which can be harvested 3 to 4 tons in succession. The yield per mu can reach 4000 kg. At the same time, irrigated cultivation can also play a role in washing salt and salt and flooding pests and weeds of dry vegetables, so as to control or delay continuous cropping obstacles.
Variety selection Existing leeks can be planted in water, mainly including four types of broadleaf, willow, green stem and white stalks, which can be selected according to local consumption habits. Under hydroponic conditions, leek grows faster and the aroma of the product becomes lighter.
The plot selection facilities should have good irrigation and water storage conditions, and require high fertility and organic matter content.
Sowing and planting can be broadcast live, and transplanting can also be carried out. Live seed 10 kg per acre, drilled or on demand, drilled 30 cm apart, on-demand seeding 15-20 cm, 3-5 seeds per hole, seedlings 3 cm in height, 15-30 cm in length Pitch the seedlings. Transplanting of nursery seedlings often uses flat seedlings for seedlings, sowing, seedlings per acre with 18 to 20 kilograms, planting 10 to 15 mu, and seedling heights of 15 to 20 centimeters to take large seedlings in batches for transplanting and planting. Row spacing and hole spacing are 15 to 20 cm, 1 to 2 plants per hole.
Water level management leek water level requirements are not high, usually before the emergence of soil moisture to prevent rotten seedlings, after emergence can be fully moist in the soil to 5-10 cm shallow water layer between any adjustment, but taking into account salt pressure, submerged Fungal eggs and weeds, etc., to prevent continuous cropping function, should always maintain a 5 to 10 cm layer of water.
Fertilizer management water leeks grow rapidly in the high temperature season, requiring large amounts of fertilizer, it is necessary to frequently apply available nitrogen fertilizer, fertilizer concentration can not be too high to prevent burning seedlings.
Prevention and control of pests and weeds Before sowing or transplanting, butachlor and metolachlor may be used for soil sealing treatment. If grassy weeds occur during the growth period, spraying with high-efficiency flupirtine may be effective. In the nursery period of dry fields, damping-off and blight may occur, and the fungicides such as mancozeb, dipoxysulfuron, and the like may be sprayed on. From July to September, there are more Spodoptera lituras and Spodoptera exigua, which can be sprayed with insecticides such as indoxacarb, methyl avermectin benzoate, and autopolymorphic nucleopolyhedrovirus. . White rust occurs during growth and can be sprayed with fluorosiliconazole, carbendazim, thiophanate-methyl, and other fungicides.
When the group of plants is harvested at a height of 30 to 40 cm, the water level is appropriately lowered and the roots are harvested at about 3 cm on the ground. The root of the residue should be exposed to the surface so as to avoid flooding and rot. Appropriate fertilization after harvesting promotes the growth of the lower jaw.
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