Sangji fish pond high yield technology

The specifications of the new Kai Sang Ki Fish Pond in Sangji Fishpond are required to require a 1:1 ratio at Tang Kyi. The pond should be rectangular, 60 to 80 meters long or 80 to 100 meters wide, 30 or 40 meters wide, 2.5 to 3 meters deep, with a slope ratio of 1:1.5. The pond is dug into a pod-shaped group, or 6 to 10 single ponds in a canal with a canal type, and the base is connected to the base, and the inflow and outflow canals and roads (2 to 3 meters in width) are built. This will facilitate the adjustment of pond water, feeding, fishing, transportation and excavation pond mud and other operations, but also conducive to mulberry tree management, mining leaf sericulture. Xintang excavation season to choose dry, rainy late fall and winter is appropriate. Dig a new pond for a few days, then apply some organic manure or fertilizer, and then put the fish to fish.
Strengthen the management of pond-based mulberry trees in Tongji. The amount of leaf production, and the quality of the leaves, directly affect the yield and quality of alfalfa, silk and fish. Therefore, it is the key to improving the overall efficiency of Sangji fish ponds by practising good mulberry trees in Tanggu and increasing the amount of leaf production. The high-yielding cultivation techniques of Tangjimori Garden should adhere to cross measures of “improved soil, multiple fertilizers, improved varieties, dense planting, and fine tubes” to achieve rapid, high-quality, and high-yield purposes, and achieve the goal of cultivating mulberry trees in the year, and then benefiting from sericulture that year.
Change the soil. Excavating fish ponds, the original fertile loose topsoil and tillage layers were turned into subsoil layers, while the original bottom soil layers were filled on the surface of the pond foundation. As a new tillage layer, although the organic matter content has increased, the reducing materials have also increased. Therefore, before the planting of mulberry, all the soil on the pond foundation should be plowed once, with a depth of 10 to 15 centimeters, not broken, so that it can be frozen and weathered in winter, enhance soil permeability performance, and improve soil water conservation and fertilizer retention capacity. Several years later, with the increasing use of pond mud and mulberry over the years, Sanggi increased and the base area continued to shrink, affecting the growth of mulberry trees. Therefore, Tongji will carry out the second earth-moving work, digging the high foundation, widening the narrow base, and repairing the fish pond so that the base surface will be about 1 meter above the highest level of the pond all year round, and replace the old mulberry.
More fertilizer. It is necessary to master the principles of increasing the use of farmhouse organic fertilizers and intercropping green manure. The first is to apply sufficient basal fertilizer, Mushi mixed with 30 to 40 kilograms of phosphate fertilizer 100 to 200 million, and then into the excreta 10 to 20 Tam, or cake fertilizer 150 to 200 kg, and with lime 25 ~ 50 kg, improved acidic soil. The second is to apply a quick nitrogen fertilizer from late April to early May after the mulberry has survived long new roots. Apply 20 kilograms of urea or 50 kilograms of ammonium per acre. It is best to use 50 to 80 tons of decomposed manure. In the second half of July, the amount of fertilizer should be appropriately increased from the previous time to promote the growth of leaves of mulberry trees in order to use the leaf to feed the mid-autumn or late autumn silkworms. Third, the growth and development stage of mulberry requires raising a silkworm once. And pay attention to reasonable interspecies, a variety of legume green manure, timely burial. The fourth is to combine the clear pond in the winter and excavate a layer of silt on the base. This will purify the fish ponds and provide sufficient base fertilizer for the growth of the mulberry on the base.
Good breed. Tang-based planting mulberry, should be selected high quality and high yield of grafted good mulberry varieties, such as Lake mulberry 197,199,32, head lotus leaf white and 7920, etc., should also be planted about 15% of early, middle and early mulberry varieties.
Dense planting. The pond gene was artificially modified to soil, the soil was loose, and the shallow ditches were planted with mulberry. Because of the high groundwater level in Tongji, the mulberry root system is shallow and should be densely planted. When planting mulberry, the line is used for dense planting. The plant spacing is 33 cm 132 cm or 50 cm 100 cm. It is better to plant 1000-1300 plants per mu. Sang mulberry must be from the fish surface 70 to 100 cm, mulberry trunk height 20 to 30 cm, cultivated into a low school stem tree type.
Fine tube. After the Tong-based planting of mulberry, mulberry cultivating, weeding, fertilizing, preventing pests and diseases, and rationally harvesting and other cultivating pipes must be done well to ensure the high yield and stability of the Tangji mulberry field and improve the quality of the leaves.

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