Hubei Cotton: Poor Growth, Poor Peach Bearing Area.

Hubei Qianjiang cotton settled area of 489249 acres, of which 275259 acres of the city.

The results of the "7. 15" Fertility Survey show that the general situation of cotton production is: the poor birth condition and the large area of the peach not being planted.

Fertility characteristics

1, the area slightly reduced.

The total area of cotton in the city is 489249 mu, 4440 Mu less than last year, minus 0.9%, which is second years of history.

2, cotton growth is poor.

Cotton 7. 15 fertility survey summary compared with the previous year, the performance was eight minus three increase, eight reduced to: plant height 81.0cm, reduced 8.0cm; fruit branch 11.93 layers, reduced 2.28 layers; single plant total fruit section 47.03, reduced 9.82; peach became 1.37, reduced 1.93; small peach 1.93, reduced the number of;

The three increase was: 4.76 fell off, 0.99 increased, the rate of shedding was 10.1%, increased by 3.5 percentage points, 1480 Mu density, 41 increased by mu.

3. The peach is reduced and the peach area is not large.

According to the survey, the average number of peaches per plant in 12 towns was less than that in the previous year, and the peach yield in the whole city was reduced. The area without peach was 89342 mu, accounting for 32.8%.

4, growth and development are slow.

From June 15th to July 15th, plant height increased by 1.77cm, less than 0.16cm last year, and fruit festivals increased by 1.46 per plant, 0.24 less than last year.

5, the growth is unbalanced.

First, the proportion of seedling area is small, and the proportion of the two or three types of seedlings increased.

Among them, the area of seedlings is 57800 mu, accounting for 21.2%, 6.4 percentage points lower than the previous year.

The two type of seedlings has an area of 126959 mu, accounting for 46.6%, an increase of 0.1 percentage points over the previous year.

The three type of seedlings has an area of 87500 mu, accounting for 32.2%, an increase of 6.3 percentage points over the previous year.

Two, there is a big gap between the three kinds of seedlings and one kind of seedling. The three kinds of seedlings are 41.2cm higher than the seedlings of one type, the fruit branches are 6.17 less, the total fruit nodes are less than 34.78, and the peach is less than 3.26.

Three, there is a big difference between the town and the good town. The plant height is 33.1cm, the total fruit section is 33.54, and the peach is 2.65 less.

The slow growth process and unbalanced growth are mainly due to the delayed harvest of oilseed rape at the beginning of the year, the delayed pplanting of cotton and the delayed harvest of grain after harvest.

Two, problems

1. The density of some cotton fields is sparse.

The average density of the whole city is 1480 plants / mu, 41 more than that of last year, while the lowest town is only 1270 plants per mu, and the population of cotton field is insufficient. Under the condition of the general increase of fertilizer this year, the density is sparse, which is an important obstacle to increase the yield per unit area.

2. Cotton diseases and insect pests are more serious.

The first is two wilt disease.

According to the statistics of eleven townships in the city, the incidence of two wilt disease was 90400 mu, accounting for 37.9% of the surveyed area, the average incidence rate was 6.6%, the highest incidence rate was 40%, the area changed to two acres due to two wilt disease, and two was the occurrence of cotton bug.

During the cotton bud growth period, the plum rains were more. Most of the fields were caused by the damage of cotton bolid bug, which accounted for 10.8% of the total cotton. The number of abscission of bolls and bolls increased by 0.99 compared with that of last year, and the percentage of shedding increased by 3.5 percentage points.

3, cotton field management is lagging behind.

As of July 15th, there were 43 thousand acres of cotton fields that were not buried in the field and 73 thousand mu without ridging. In the two place, some cotton were pruned, and the buds were not timely. Three, 51 thousand acres were not pferred, resulting in excessive vegetative growth and serious abscission of bolls and bolls.

Six, the management opinion of the next paragraph

1, apply heavy boll fertilizer to prevent premature senility.

The application of flower and boll fertilizer is early, and the soil moisture in the cotton field is grabbed. It is completed before July 25th; two, the quantity is enough, the urea is 15-20 kg per mu, and the potash fertilizer is 10-15 kilograms. Three, the method is proper, and it should be applied or applied.

At the same time, it can improve soil, prevent lodging and prevent premature senility.

At the end of July to the beginning of August, peach fertilizer should be applied as appropriate, with urea 8-10 kg per mu.

After root spraying, the absorption capacity of roots decreased at the later stage of flower boll. Spraying 1%-2% urea and adding 600 times potassium enriched cotton special micronutrient fertilizer or Jia Er Kang and so on 2-3 times, each interval of 5-7 days, so that the leaves were directly absorbed and utilized. The dressing time outside the root was generally in mid August, and in the middle of -9 month, it was sprayed on the back of the upper and middle leaves in sunny afternoon.

Make sure that cotton is tender in August and not premature in September.

In view of the current general situation of boron deficiency in cotton fields, 2 boron fertilizers were sprayed outside the roots in the middle and late 7 months, and the interval was 5-7 days. 75 grams of fast boron and 50 kg of water spray were applied per mu.

2, seize the opportunity to prevent diseases and pests.

We should carefully organize the campaign of prevention and control, unify the time, select pesticides accurately, place the target accurately, and strive to improve the control effect.

To ensure that the number of eggs in the field reaches 30 or 5 insects per 100 eggs, make sure that the medicine is used for 5-7 days. 26% milkworms 50 milliliters or 25% poplar branches are used to spray the milk 60 milliliters or 20% 20% star milk oil 70 ml to the water 45 kg. When the Bemisia tabaci is 100% of the worm reaches the head, it is immediately used to prevent and cure. The dosage of the new medicine can be selected as follows: the new medicine can be used for the treatment of the pesticide per mu, and the tea can only be milled or milled, and the tea can be milled or the TM70% can be used in the continuous spray. A combination of insecticidal lamp, chemical control and artificial sweep is used to fight the three or four generation of cotton bollworm war.

Spraying should be carried out early and late, and the liquid should be sprayed on the back of the leaf.

It is necessary to use adequate water to ensure the control effect. It is advisable to prevent and control the Spodoptera litura in the evening at the lower age of the larva, and use 5% points to spray 8 grams or 1% of 40 milliliters of water against 45 kg of water to prevent and control. After catching the rain and cotton fields, the blind bug should control the spray after 9 o'clock in the morning or 4 p.m.

3, timely topping, reasonable adjustment.

Grasp "time to inequality"

The principle of "branch to unequal time".

When the fruit branches of cotton plants reach 22-25 levels, they will be topped on August 5th -10.

Advocate small top, with one leaf and one mind as the criterion.

For the cotton fields with poor light pmittance, we should destroy the old leaves in a timely manner, empty the branches, pick up the center of the heart, wipe out the buds, concentrate the nutrition to attack the big peach, ring up the bell more, and shedding less.

At present, the cotton field with good growth is sprayed with 3-4 grams of water and 45 kg of water in the field.

On the 7-10 day after topping, a total of 4-5 grams of amino acid was used to inhibit the growth of late buds and control the elongation of fruit branches.

4, thoroughly clean three ditch, timely drought and drainage.

We must do a good job in cleaning the Three Gorges, and ensure that the rain is dry in the fields.

In the rainy season, we must timely furrow irrigation to achieve the effect of regulating the fertilizer with water, raising the roots with the fertilizer, and preserving the roots with the roots.

After the irrigation, we should quickly loosen the soil and prevent the hardening of the soil from running.