Experimental methods.1. seed selection by dip (see floating seed leaves)2. release the seeds through the plunge of approximately 1-2 days.3. when the roots of the black bean seeds sprout, remove the prepared pot holders.(Already have) by putting a pot 10 seeds.4. fill up the soil and water 100 ml.5 .. at a party full of growth, screening out incomplete black beans.6. put all the pots, fertilizer, pots, compost, 5 4 stable. Green Bean and soybean Shell to shell peanuts7. plant for a period of 1 week.8. save the result of the growth of the black beans and the average height of the black bean from 3 trials series.
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