1. Soilless cultivation of amaranth
a. Use a flower pot or wooden trough with a depth of 18-20 cm to fill the river sand with a depth of 1-2 cm. The river sand should be rinsed clean to avoid bacteria.
b. Select the roots of the amaranth in the open field for more than two years, cut off the old roots and leaves, leave the short stem roots and insert them into the flower pot or wooden trough.
c. At the time of insertion, 3-4 strains are one stalk, the row distance is 3.3 cm, water is poured after planting (one time every other day), and the nutrient solution is poured after the new carp grows out (every day is poured 1 time).
d. Water and nutrient solution should be poured every 1-2 days in spring, summer and autumn, and water and nutrient solution should be poured every 3-4 days in winter.
e, rainy days, afternoons, evenings do not pour nutrient solution, for leaf yellow, more nutrient solution, leaf black less nutrient solution.
Nutrient solution
Urea 15g, potassium dihydrogen phosphate 2.25g, water 15kg, poured 1.5 square meters.
Second, the soilless cultivation of cucumber
a. Cucumber soilless cultivation does not require slow seedlings, so it can be transplanted with large seedlings, which is conducive to increasing the total yield.
b. After the cucumber is transplanted, insert the wooden strip to secure it, leaving only one main vine and 1-2 side vines.
c. Topping when there are 5-6 leaves at the upper end of the knot.
d. Seedlings can be bred during the vigorous period of cucumber.
e. Cucumber can be eliminated after the fruitful period. In addition, the cucumber seedlings that have been bred in advance can make cucumbers have strong growth and fruitful cucumber seedlings, which will increase the benefits.
Third, the soilless culture of watermelon
a. Watermelon soilless cultivation: It has the advantages of early maturity, high yield, good variety and high economic benefit.
b. Use porcelain pots or plastic bags with a diameter of 30 cm and a height of 45 cm. The lower part is filled with 15 cm thick cobble blocks. The upper part is filled with 80 to 90% of clean river sand, and the germinated watermelon seeds are sown in the river sand.
c. 1-2 tablets per pot, and finally leave a strong seedling.
d. After transplanting the seedlings, the nutrient solution is poured. The dosage of each plant is 200-500 grams. It can be applied once in the morning and afternoon. The dosage can be reduced during the seedling stage. The temperature can be increased at noon and the light can be poured at noon.
e, watermelon can only retain one main vine or one main vine side vine, knot 1-2 melons, retain 7-8 leaf topping in front of the knot.
Nutrient solution
15 grams of urea (or 33 grams of ammonium sulfate), 5-10 grams of calcium nitrate, 3.5-4 grams of potassium dihydrogen phosphate and magnesium sulfate, 1.8 grams of calcium chloride, 0.35-0.4 grams of ferric chloride, 5.6 grams of borax, sulfuric acid 1.5 g of manganese, copper sulfate and zinc sulfate, and the pH of the nutrient solution is 5.5-6.
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