Traditional Culture Encyclopedia - Traditional festivals - In recent years, the cultivation of greenhouse crops has developed rapidly, but the seed setting rate of crops has decreased. What is the reason?

In recent years, the cultivation of greenhouse crops has developed rapidly, but the seed setting rate of crops has decreased. What is the reason?

There may be the following reasons:

1, vegetative growth and reproductive growth are not coordinated;

2. Excessive nitrogen application at flowering stage;

3. Insufficient light, poor pollination and low seed setting rate in bud stage;

4. The temperature in the greenhouse is too high, the humidity is too high, the pollen is immature and the vitality is low.