CATDOLL : CATDOLL: How many years does it take for a palm-sized river clam to grow?

1. How many years does it take for a palm-sized river clam to grow?

It takes about 3 years to grow.

River clams have high nutritional value and can produce pearls, so they have certain edible value and economic value.

River clams usually live at the bottom of freshwater lakes, ponds, rivers, etc., half buried in mud and sand. Only when the weather is hot will most of their bodies be exposed outside the mud. They crawl very slowly, usually only moving forward a few centimeters in a minute and leaving a shallow groove.

2. What is the average yield per mu of river lotus root?

1. According to the estimated purchase price, the annual per mu income is 14,000 yuan, and the profit per mu is 9,950 yuan.

2. Approximate investment and income:

1) 1,000 yuan per mu for digging;

2) Membrane 2000 yuan;

3) Construction cost 1,200, 350 yuan per mu;

4) Invest 1,000 yuan in lotus root seeds;

5) The harvesting fee is 1,200 yuan per mu;

6) Fertilizer 500 yuan per mu;

7) Total cost is RMB 4,050. The variety is relatively high-yielding, with an average yield of 4,000 kg per mu. The wholesale price is about RMB 6/kg, and the purchase price is expected to be RMB 3.5/kg. Based on the wholesale price, the annual per mu income is RMB 24,000, and the profit is RMB 19,950 per mu.

3. How many clams can be raised in one acre of pond?

This depends on the quality and depth of the water in your fish pond. Generally, the standard for one acre of fish pond should be 600 to 800 fish. For a 10-acre area, as long as the water quality is good, the standard should not exceed 10,000 to 12,000 to prevent the fish from lacking oxygen and returning to the pit.

4. What is the average yield of river crabs per mu?

At present, the national average is about 150 catties/mu