Why do pumpkins drop fruit?

Pumpkin fruit drop is a common problem encountered in the process of pumpkin planting, which seriously affects the yield of pumpkin and makes farmers suffer great losses. So, why do pumpkins drop fruit?

1. Why does pumpkin fall fruit

1. Excessive nitrogen fertilizer and rainfall cause excessive growth of greediness, stems, leaves, main and lateral vines are more vigorous than fruits, and insufficient nutrients in fruiting period lead to fruit drop.

The first fruit is not harvested in time, causing the second fruit to fall off.

3, the number of seedlings is too dense is not conducive to ventilation and light transmission, but also the cause of fruit drop.

Second, how to do pumpkin fruit

1. Regulate the relationship between vegetative growth and reproductive growth. The vegetative growth is too vigorous, when the main vine elongates to 12 nodes, there is still no female flower. At this time, the vegetative growth should be transformed into reproductive growth by weakening the apical dominance. The methods are as follows: ① head change: when the main vine does not bear fruit, the main vine can be cut off before the leaf festival with the lowest position of the main vine, and the closer the child vine is to the root, the better. 2. Circle: Form the tip of the main vine into a circle and tie it with rope. (3) Take: appropriate sprain the tip of the main vine, so that the vascular sac conduction frustration. 4. Partial root breaking: A deeper cultivation can be carried out to break part of the roots.

2, due to excessive female flowers caused by flower drop fruit, can be thinned out part of the flowers and fruits.

3. Artificial auxiliary pollination: 8-10 in the morning is the most suitable. At this time, the pollen is mature. Take off the healthy male flowers, remove the petals, and gently smear the anthers on the female flower stigma. At this time, the stigma secretes mucus, which sticks the male flower pollen. A male flower can bear 2-3 female flowers in succession. After pollination, use leaves or corolla cover to prevent rain from washing away pollen. If conditions permit, put bees for pollination in pumpkin flowering season, and put 2-3 boxes per hectare.

4. Reasonable dense planting, 12,000 - 18,000 seedlings per hectare is appropriate, early-maturing varieties are easy to be dense, late-maturing varieties are easy to be sparse, which is conducive to ventilation and light transmission, improves fruit setting rate, and can also prevent and control epidemic diseases.