How many days does it take for yellow, red, black mung beans to sprout to bear fruit?

It takes about 5 days.

The temperature and humidity should be suitable.

1. Purpose of the experiment:

Understand the germination and growth process of mung bean sprouts, master the methods of making mung bean sprouts, and lay the foundation for making mung bean sprouts by yourself in the future.

2. Experimental methods and steps:

1. Go to the farmers' market to select 250 grams of high-quality mung beans, a ceramic basin with a large mouth and a shallow bottom (the bottom is required to leak), weave two flat grass balls with straw, and a large amount of water;

2. Soak the mung beans in a basin and soak them under the water tap for a whole day;

3. Put the grass ball at the bottom of the pot, spread the "soaked fat" mung bean evenly on the grass ball, and then put another grass ball on top of the mung bean (the grass ball below is used to store water, which is convenient for mung bean sprouts to take root and grow, and the grass ball above is used to prevent water evaporation, reduce heat loss, and ensure that the mung bean has enough germination temperature);

4. Water a large amount of water three times a day in the morning, noon and evening until the grass is soaked with water.

12 April-14 April 2005.

Fourth, the experimental process and observations:

At 7:30 a.m. on April 12, dip mung beans in the basin. At 18:30, the mung bean had "drunk enough" water, and the thin mung bean became a "green little fat man"; At 7 p.m., spread the mung beans on the grass balls.

At 7 o'clock on the 13th of the month, some small mung beans had broken their skins, as if they had been cooked on the mung bean popsicle.

At 18 o'clock on the 13th of the month, many small mung bean sprouts almost drilled out of the "little head" (remove the grass ball pressed on it);

At 6:30 on the 14th of the month, the mung bean grows about one centimeter of bean sprouts, the sprout petals are tender yellow, the bean shell hangs on the side of the bud petals, and the bud roots are shallow in the grass ball, which is really cute. (I jumped up and down, and scared my dad a lot.) ）

At 17:15 on the 14th of the month, the mung bean sprouts have grown to more than ten centimeters (that is, they can be eaten, haha!). ）。

5. Harvest and experience:

After three days of observation and experimentation, I gained a lot, and under the explanation and inspiration of my father, I got the following gains and knowledge:

1. I realized the knowledge of suitable temperature, water and air in the process of plant growth (Dad said that if it is summer, mung beans will grow faster); 3. After my father's guidance, I also learned about the germination and growth of soybeans, broad beans, and red beans, and learned new knowledge outside of experiments (hooray!). ）。

Attached on the next page: Mung bean sprout germination and growth process observation record table.

Observation record of mung bean sprout germination and growth process.

Record of the daily observations.

Note At 7:30 a.m. on April 12, 2005, the mung beans were immersed in the basin ......

12 April 2005, 18.30.

Skinny mung beans have become "green little fat men".

13 April 2005, at 7 a.m.

There are individual small mung beans that have broken their skins.

April 13, 2005 at 6 p.m.

Many small mung bean sprouts have "little heads" out of the same way

14 April 2005, 6.30 a.m.

Mung beans grow about one centimeter of sprouts, the sprout petals are tender yellow, the bean shell hangs on the side of the sprout petals, and the bud roots are shallow in the grass.

14 April 2005, 17:15.

The mung bean sprouts have grown to more than ten centimeters.