Planting Technology Lists
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Occurrence time and prevention of cotton fertilizer damage
Cotton fertilizer damage occurs in different degrees in different cotton areas every year, and it may occur at different stages of cotton growth. Cotton transplanting process also has the phenomenon of fertilizer damage, so seedling topdressing dosage must be controlled, the first time 5~6 kg urea per mu on the line, the second time increased to about 10 kg. Before transplanting, too much base fertilizer will also produce fertilizer damage, such as applying high content of multi-element compound fertilizer, only 25~30 kg per mu can be used. Partial application of nitrogen fertilizer at bud stage also had negative effects on cotton. one is
2019-01-16 -
Eight methods of preventing Cotton from rotten Boll
1. Ditching and drainage cotton is most afraid of autumn waterlogging, the greater the humidity of the cotton field, the more serious the rotten bolls. In case of continuous rain, it is more likely to cause rotten bell. Therefore, after the heavy rain, it is necessary to timely eliminate the stagnant water in the cotton field, dry the moisture to reduce the humidity, improve the field microclimate, accelerate the cotton boll cracking, restrain the propagation and spread of the pathogen, and reduce the rotten boll. two。 In cotton fields with high pruning density and vigorous growth, after full flowering, empty fruit branches should be cut off in time, strong buds should be erased, middle and lower side tops and old leaves of main stems should be removed in stages and batches, so as to enhance ventilation and light, reduce temperature and reduce rot.
2019-01-16 -
Study on dose absorptivity of Cotton to Dexamethasone
The characteristics of infinite growth habit and great plasticity of plant type of cotton determine that it must be adjusted many times during its growth period, especially under the cultivation mode of "early, dense, dwarf and film", through directional induction to shape the reasonable field structure and obtain the best time and space distribution of cotton bolls. in this paper, by using large-scale spraying machinery, taking Xinluzao 23 as the object, the absorption rate of acetylamine in different stages of cotton growth and development was studied as follows. 1. The traction power of the spray machinery is between 30 and 65 horsepower, and the volume of the spray can is between 1.7 and 2.2 cubic meters.
2019-01-16 -
Cultivation techniques of Cotton covered with plastic Film
Cotton plastic film mulching has the characteristics of stable yield, high yield, high quality and economic efficiency, the yield per mu is up to 100W, the main cultivation measures are as follows: 1. Fine soil preparation, the first deep soil layer, fertilizer and water conservation of the land, made into a width of 60-70 cm, 8-10 cm high bed, with wood rolling repeatedly suppressed twice. two。 Seed treatment should be in the sun, strict seed selection, sulfuric acid depilation, germination test, and cold water before sowing. 3. Sowing at the right time, the best sowing time is 7500-850 seedlings per mu on April 25th-30th, covered with film in the middle of the edge.
2019-01-16 -
Application proportion of Special Fertilizer in Cotton drip Irrigation Field
First, the total amount of cotton fertilizer input in high latitude sub-suitable cotton areas per unit yield of seed cotton 300-380 kg, the need to put 70-80 kg of natural fertilizer, equivalent to 160-180 kg of standard fertilizer. To achieve "jin fat cotton". If you put 1 kg of standard fertilizer, you can produce 1 kg of lint. 137 regiment soil test results and cotton plant nutrition diagnosis generally lack zinc, 1-2 kg zinc fertilizer is applied in autumn, and the yield is increased by 5% and 10%. For plots rich in potassium, the application of potash fertilizer is 5-10 kg, especially
2019-01-16 -
Misunderstandings in Cotton planting
Myth 1, sparse planting saves work for cotton farmers, but the boll setting per plant limits the yield of cotton. According to the investigation, the bolls per plant of cotton farmers are mostly between 30 and 40. It is very difficult to tie more than 50 bells. According to the theoretical data, one jin of seed cotton is produced per 100 bolls. Planting 1000 plants per mu with 50 bolls per plant will yield 500jin of seed cotton. If there are 25 bolls per plant of 2500 plants, the yield of seed cotton is 625jin per mu. Thus it can be seen that high yield and density of cotton is the key. Only a reasonable density
2019-01-16 -
Leaf blight of cotton
The symptom is also known as Cercospora leaf spot of cotton. It is mainly harmful to leaves. Most of the cotton infected in the late growth stage, at first produced many dark red dots on the leaves, and then expanded into nearly round, purplish red on the edge, slightly raised, brown in the middle, and produced a white mildew layer under wet conditions, that is, the conidiophores and conidia of the pathogen. The damaged leaves are easy to break. The pathogen Mycosphaerellagossypina (Cooke) Earle is called Gossypium, which belongs to ascomycetes subphylum fungi. Ascospores globular black, ascospores
2019-01-16 -
A new product of cotton-Demian 800f1
Demian 800F1, a breeding unit, is a new hybrid cotton variety with high yield, high quality and multi-resistance developed exclusively by Denong Zhengcheng seed Industry Co., Ltd. It was approved by Anhui Province in 2005. The whole growth period of this variety is about 134 days, which is a medium-ripe variety; plant tower type, strong growth, strong boll setting, big peach, thin boll shell, smooth boll opening, easy to pick, good cotton fiber quality, lint percentage 42.1%. High resistance to cotton bollworm and red bollworm, high resistance to Fusarium wilt, resistance to Verticillium wilt, three peaches, resistance to high temperature and drought, and
2019-01-16 -
The new cotton product "Hanmian 685" has passed the examination and approval.
Hanmian 685, a new transgenic insect-resistant cotton variety bred by Handan Academy of Agricultural Sciences (postcode: 056001, telephone: 0310-8161725), recently passed the variety approval of Hebei Province. The growth period of this variety is 140 days, with 14.7 bolls per plant, boll weight 5.8 grams and seed index 10.75 grams. 40% of clothes. The flowering rate before frost is 82.25%. Resistant to cotton bollworm, red bollworm and other Lepidoptera pests. High resistance to Fusarium wilt and resistance to Verticillium wilt. Micronaire value 4.5, stronger than
2019-01-16 -
Water floating Seedling technique of Cotton
"Cotton floating Seedling Technology" is a new cotton planting technology developed by agricultural experts in Hunan Province. this technology uses porous polyethylene foam seedling tray as carrier and mixed substrate as support. The seedling tray containing cotton seeds is put into the nutrient liquid water nursery bed for cultivation, which has significant seed saving, labor saving, yield increasing and synergism, and the seed consumption is more than 40% less than that of conventional nutrition bowl seedling transplanting cotton. The labor consumption of raising seedlings and transplanting per mu is reduced by about 10. Cotton seedlings have well-developed roots, low Lignification, soft and elastic, not easy to break, and life.
2019-01-16