Pick Yellow Ripe Bell &Nbsp; Ensure Harvest.

What is meant by

Rotten bell refers to rotten mature cotton bolls.

From the bell shell begins to blacken, the fiber becomes stiff, and seeds germinate or decompose.

Two. What causes the rot?

Rotten bolls are caused by high temperature and humidity. High humidity is caused by excessive rainfall or excessive rainfall days.

High temperature and high humidity induce the occurrence and harm of 20 kinds of pathogens, such as Phytophthora blight, Phytophthora blight, red rot fungus and anthrax.

Three, rotten bolls.

Rotten boll resulted in a great loss in yield, and the loss of the average annual yield was 10%. Over the years, the yield reached 20%.

In 2003, 2005 and 2009, the yield loss of the Yellow River basin was more than 20%.

Rotten bolls caused the original cotton to lose its original quality and use value, such as fiber length decreased by 25%, strength decreased by nearly 50%, color changed from milky white to yellow, brown to black.

Rotten bell seeds can not be used as seeds.

Four, rotten bell

The economic losses caused by rotten bolls are very large. They are reduced from grade 1 or two of commercial cotton to grade four or extra grade.

Like the high yield field, 60 thousand acres of bolls, each boll value of 3 points, the economic loss of rotten bolls reached 80%, and each boll loss of more than 2.

10 thousand acres of rotten bell, that is, loss of 200~300 yuan.

Five, why is this year's special emphasis on picking yellow ripe bell?

As we all know, the output of this year's unusual climate is hard to come by.

The low temperature duration of strong cold wave in early stage led to delayed seeding and delayed seedling emergence.

In the the Yellow River basin, high temperature and partial drought occurred in July. When the precipitation increased in August, local waterlogging was serious in North China.

According to the survey conducted by Anyang in August 15th, the number of rotten bolls per plant ranged from 0.2 to 2, with a maximum of 3.

Due to the recent rainfall season in the Yellow River, the rainy days and heavy rainfall will not only affect the early autumn bell, but also aggravate the rotten bells.

Yellow ripe bell means that fiber and seeds are mature, and when they are cracked, they can not crack due to excessive rainfall.

This part of the bell is perishable.

Therefore, we should advocate picking up and winning the hard won harvest.

Six, how to grab yellow ripe bell?

First, it is cloudy or sunny, and pick the yellow ripe bell.

The two is to spread out the sun; peel the bell shells and dry the seed cotton.

The three is timely sales.

Four, hybrid seed production and breeding fields should be grabbed. If seeds are stratified, they can not be used as seeds.

Seven, besides picking yellow ripe bell, what should autumn cotton production emphasize?

First, we should rush to row waterlogging, reduce humidity and keep the field dry.

The two is to cut off the empty branches, destroy the lower leaves, or push the plants in parallel to increase the ventilation and light pmission conditions in the field.

The three is to increase the frequency and concentration of chemical control, prevent the rain from growing and greening late.