Key Cultivation Techniques of Wheat After Transplanting Cotton

The area of ​​transplanted cotton after wheat has been increasing year by year in Hubei Province, which is mainly conducive to the double-high yield of cotton and wheat, which facilitates the mechanized harvesting of wheat. Its growth and development characteristics are as follows: First, it is late transplanting, and it tends to be stiff and tender. It is long and difficult to get early. The growth and development of the two buds are fast and the latter have obvious advantages. The third is the Chengling concentration, and the output is mainly composed of Futao and Qiutao. Fourth, it is easy to greet late-maturing late-flowering, and after flowering, the flower quality is not high. Fifth, the occurrence of disease was reduced and the insect pests were heavier in the later period.

I. Management goals of transplanting cotton seedlings after wheat

The main goal of the wheat field after the seedling stage of budding wheat is early budding, multiple buds, early flowering, and less shedding. It is required to not only lay a good shelf, but also to control the growth of vegetative plants so as not to overshoot. The growth rate of plant height before Shenglei is 1～1.5cm, and the increase from Shenglei to flowering plant height is 2～2.5cm; the buds emerge around June 20th, and flower around July 10th.

Second, the cultivation and management techniques of wheat seedlings after transplanting

In view of the reproductive characteristics of wheat after transplanting cotton, suitable varieties should be selected for cultivation and management, timely sowing, and cultivating strong seedlings; appropriate increase in density to close late; strengthen management to promote early management; And other measures to increase production and quality.

1, choose the appropriate variety

After the wheat transplanting cotton should be selected early maturity, growth period is about 125 days, and is a short boll period, fast bell, boll concentration, before October 20 the rate of more than 80% of the high-quality high-yield insect-resistant cotton and resistance Insect hybrid cotton varieties, the former glutinous wheat is suitable for early-maturing wheat varieties.

2, timely sowing, nurturing strong seedlings. Usually sowing from late April to early May, seedling age control in about 30 days.

3. Robbery, transplanting, improving the quality of transplanting, shortening the period of seedling sowing, and appropriately increasing the density to make up late.

After the wheat is harvested, timely rob and transplant. The cotton has a long seedling age and a relatively high temperature. It can be used to rob and transplant with no-tillage soil, use a hole puncher to put the seedlings in the hole, apply 5 kg of compound fertilizer per acre, and especially ensure the quality of transplanting when the soil is transplanted. , Pouring enough water to reduce the period after transplanting. Appropriate increase in transplanting density, hybrid cotton is generally appropriate 2000/mu, conventional cotton no less than 2500/mu.

4, weeding weeding. After the cotton tree is live, we need to carry out cultivator loose soil weeding, which can break the soil compaction, promote new root growth, and transplanting cotton fields is more important. When cultivating and weeding, we should avoid shaking the carcass to prevent it from being damaged. In the seedling stage, the cultivator loose soil is usually used for weeding 2 or 3 times, and the cultivator depth should be gradually deepened. Every time the cultivator is cultivating, it is necessary to protect the roots and form a deep ditch and a high ridge.

5. Strengthen the management of the field, rationally manage the fertilizer, promote the early emergence of cotton, early budding, early flowering and ringing.

5.1 After the wheat is ploughed and no-tillage is planted in the soil, the soil shall be soiled, and the soil shall be loosened, broken, and destroyed in time to facilitate ventilation and warming, and to promote seedling rooting. And depending on the soil moisture early Shi Ti Miao Fei, water application of urea 2 kg per mu. After cultivating livelihood, we should pay close attention to the cultivator, combine cultivating basal fertilizer for cultivating, applying 25 kg of ammonium bicarbonate per mu, 50 kg of superphosphate per mu, 10 kg of potassium chloride per mu, and 0.25 kg of boron fertilizer per mu.

5.2 Deep cultivating in bud stage, deep cultivating, promoting root growth, high culturing ridges, and protecting loquats against lodging; Steady application of deep-seated bud fertilizer, embedding 30 to 50 kilograms of cake fertilizer per acre, potassium chloride 10 kilograms per acre.

5.3 Two periods of budding control, the first time in the cotton budding stage, the cotton plant is about 7 to 8 true leaves when chemically controlled, the use of dilute amine 0.5-1g or 25% of the Zhuang Zhuang 4ml Left and right; the second time in the period of budding, mu using dilute amine 1.5 ~ 2g or 25% of the helper prime 6 ~ 8ml. Early-onset cotton fields can be slightly re-controlled, late-onset and late-on-cotton fields should be treated with light or no control.

5.4 Reapplying and deep flowering and bolling fertilizer. After mid-July, the average cotton planting of a large peach, replanting flower bell fertilizer, applying urea 10-15 kg per acre, potassium chloride per acre 10 kg, deep ditch or hole application. The second is to top-down. When the 18 cotton branches are topping, the time is appropriate around August 10; the third is to comprehensively promote the peaches. The fourth is timely drought relief.

5.5 The growth process of wheat after cotton is postponed, and late glutinous rice is often cooked late. Mainly do a good job of field management measures such as anti-staining in cotton fields, top-dressing extra-roots, push-strain plants and ridges. In the autumn sowing season, single plants may be planted in more than 4 cotton fields in autumn sowing and plucking may be postponed. When autumn sowing, the cotton plants will be separated and fertilized in rows. , Intercropping wheat.

5.6 Prevention of pests

After wheat, there was no pre-made barrier for the cotton, late-maturing greed, tender green leaves, rich food materials, and appropriate increase in the number of spraying control. When the drought is high and the cotton seedlings are weak, it is beneficial to spiders. In the later period, it became a concentrated pest of cotton bollworms, Spodoptera litura and other pests. Therefore, prevention and control should be carried out in time according to the occurrence of pests.

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