Analysis And Prediction Of Cotton Seedling Situation And Yield In Sheyang County Of Jiangsu In July

< p > > the world's < a target= "_blank" href= "http://www.91se91.com/" > clothing < /a > a target= "_blank" href= "_blank" > shoes "< hat > net" Xiaobian to introduce the cotton seedling situation and yield forecast of Jiangsu Sheyang County in July.

< p > according to the report of the Sheyang Cotton Association, the cotton association of Sheyang County investigated the cotton seedling situation in July: the growth and development process was similar to that of the whole year, but the daily increment of the indicators increased on July 21-25, but the overall seedling situation was still less than that of the same period last year.

The forecast yield is lower than last year, higher than 2012.

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< p > strong > 1, seedling condition < /strong > < /p >

< p > Sheyang county investigation station, as of July 25th, the average plant height was 92.05 cm, fruit branch 14.07, fruit node 50.35, bud 35.09, day flower 0.92, young bell 3.5, big bell 1.58.

In addition to plant height increased by 8.5 centimeters over the same period, other indicators are still worse than the same period last year.

Among them, fruit branches were less than 0.04 units a year, fruit festival was 2.27 less, bud less 0.59, flowers less 0.014 days, young bell less 0.05, big bell less 0.13.

Compared with the survey conducted in July 20th, the gap was narrowed. Fruit branches, fruit nodes, buds, Day flowers, young bolls and big bells were reduced by 0.16, 1.43, 1.71, 0.07, 0.95 and 0.07 respectively, but the shedding rate was still higher, reaching 19.96%, higher than 4.37 percentage points in the same period last year.

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< p > expert analysis shows that the reasons for the current situation are mainly in two aspects.

First, management is in place.

In the past half a month, the majority of cotton growers have increased the management of cotton field management. The implementation of key technologies and measures has promoted the growth and development of cotton.

Two, the weather is favorable.

After several days of hot weather, the spread and development of cotton disease were well suppressed, and the growth function of the disease was recovered. The Typhoon No. 10 passed over. Although there was a strong wind, the lodging of cotton plants was not observed. A small amount of precipitation was conducive to the moisture supplement in the cotton field. The temperature in the near weeks was relatively stable, the sunshine hours increased and the sunshine intensity was improved.

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< p > < strong > two, yield prediction < /strong > < /p >

< p > 1, yield per unit year-on-year decreased.

According to the current cotton seedling situation and the actual situation of cotton production in the past few years, the cotton association of Sheyang County predicts that the bolting of this plant is expected to be more than 30 this year, and the total bell number of the Mu is about 5.2. According to the calculation of 17.5 kg of Wan peach lint, the yield per mu can reach 91 kg, which is 11.2 kg less than that of the last year, and the reduction is nearly 11%.

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< p > 2, uncertain factors are still more.

Expert analysis shows that there are still many uncertain factors for the final formation of cotton output this year, and the most important thing is the change of weather.

Experts believe that the next more than 40 days will still be a crucial period for cotton production.

In Sheyang, it is known as "summer heat buds, White Dew flowers, autumn peach blossoms" and "Bai Lu see flowers and autumn to see peach". This means that during the cotton production process, the effective cutlets of flowers, flowers and bolls are "heat stroke", "White Dew" and "autumn equinox".

According to the situation in past years, in the middle and later stage, when the field management measures are in place, the most important factor is cotton weather. If the weather is normal or tends to be suitable for cotton growth, the output may continue to increase, otherwise it will be reduced.

In late July 2013, it was predicted that only 225 kilograms of cotton seeds were produced per unit area. However, after entering August, the weather conditions were really good weather conditions, and the peach yield and single boll weight of cotton increased. Finally, the yield reached 280 kg.

In the same period of 2011, the forecast output was also 215 kilograms, but the subsequent rainy days increased and were repeatedly affected by typhoons. The final output was only 191 kilograms.

Therefore, we must not take lightly this year's cotton production. We must pay close attention to the changes in weather and seedling conditions and take measures to deal with them positively.

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< p > < strong > three, management measures < /strong > < /p >

< p > experts suggest that at present and at a later stage, the whole county should be a href= "http://www.91se91.com/news/index_s.asp" > cotton > /a > field management.

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< p > 1, based on disaster prevention and disaster resistance.

8, September is still a frequent occurrence of unstable weather such as typhoons and torrential rain. We should make clear ditch water and soil moisture as conventional measures to ensure smooth drainage of cotton fields, so as to enhance cotton's ability to resist natural disasters such as typhoons and rainstorms.

At the same time, we should do a good job of weeding and loosen the soil so as to improve the permeability of the soil, enhance the vitality of the roots, improve the ability of sucking and raising, and ensure the steady growth of the cotton.

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< p > 2, pay attention to fertilizer and water management.

In the near future (before the topping), we should apply second times of flower and boll fertilizer to ensure that the quantity and variety are suitable for roads and methods so as to meet the needs of cotton growth and nutrient requirements at flowering and boll stages, so as to achieve the goal of increasing vigor, preventing premature senescence, multi knot peach and increasing boll weight.

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< p > 3, do well in chemical control.

At present, most cotton fields are growing well, and the use of chemical adjustment is even more important.

Even if the fields with low growth are poor, we must adhere to the principle of "light use and diligence", so as to coordinate the vegetative growth and reproductive growth, to build a high light group structure, to promote the pportation of nutrients to bolls and bolls, and to increase the Bolling and yield level.

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< p > 4, timely pest control.

According to the cotton field insect pest prediction at the county plant protection station, cotton bollworm, bug bug, spider mite and Bemisia tabaci are the main pests in the cotton field at present and in the next stage.

It is necessary to overcome the idea of paralysis and lax in the previous stage with less insect pests and less insect pests, and timely control and control hazards according to plant protection information requirements.

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< p > 5, timely topping.

According to planting density, sealing trend, ideal fertility index < a href= "http://www.91se91.com" > < /a > and effective growth period of bud and bell, the time of topping and edge cutting is selected to increase fruit branch and control fruit section, and strive to knot more peach and knot peach.

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