Planting Technology Lists
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Technical problems and overcoming methods of "two nothing" cultivation of Cotton
The "two nothing" cultivation of cotton is the technique of raising seedlings with soilless substrate and transplanting bare seedlings without carrier. After demonstration in more than 80 counties across the country from 2004 to 2005, some technical problems were found, and the solutions were put forward as follows: first, the main reasons for the excessive density of seedling bed: first, it did not row according to row spacing of 10 cm and plant spacing of 3 cm; second, it sowed a large amount of seeds; third, there was no timely thinning of seedlings after emergence, resulting in the formation of tall seedlings or line seedlings. The way to overcome it is to row according to the row spacing of 10 cm and the plant spacing of 3 cm, and to sow seeds according to the plant spacing.
2019-01-16 -
The application of cotton "two changes" technology is progressing smoothly.
The technology of industrial seedling raising and mechanized transplanting of cotton (referred to as "two technologies" for short) has the characteristics of modern agriculture. it is not only an intensive and large-scale production technology, but also a resource-saving and environment-friendly technology. its core technology is substrate seedling raising and naked seedling transplanting, which passed the appraisal of the Ministry of Agriculture in 2004 (Ministry of Agriculture Achievement Registration No.: agricultural Science Guojian word [0056] No. 0056), ranking among the international leading level of similar research. It has obtained a number of national invention patents and realized the production and serialization of the technology. it entered the production demonstration last year and is now
2019-01-16 -
Cotton "Dong a" Genic male sterile Germplasm
The cotton male sterile plant was found in the field in 1972, and the cotton "Dong A" genic male sterile germplasm was successfully cultivated after 3 years and 6 seasons. Its sterile traits are mainly controlled by a pair of recessive nuclear genes. It has the advantages of stable inheritance of sterility, easy transfer, strong combining ability, wide restorer line, about 50% sterile plant rate and 100% sterility per plant. It has the characteristics of high yield and wide adaptability. A derived male sterile line 1 was bred by using Dong A genic male sterile germplasm. Among them, several derived male sterile lines were combined and 12 hybrids which had been approved were selected.
2019-01-16 -
Cotton: grab the opportunity to make soil moisture early
Although there are still one or two months to go before cotton seedlings and sowing, the current situation of continuous drought in autumn, winter and spring has posed a great threat to cotton planting this year, and according to the situation in previous years, there is little precipitation in our province from March to April. In view of the current situation, Dong Hezhong, deputy director and researcher of the Cotton Research Center of the Shandong Academy of Agricultural Sciences, suggested that cotton farmers should start and prepare early for cotton planting this year, seize the opportunity to create soil moisture according to the weather conditions, actively create soil moisture and protect seedlings against drought, and strive for one sowing of the whole seedling and early development of strong seedlings. Select
2019-01-16 -
Cotton: reasonable pruning according to local conditions
Conventional cotton pruning is most familiar to cotton farmers, but some are not familiar with the other two pruning methods-simplified pruning and non-pruning. The purpose of cotton pruning is to adjust nutrient distribution, control vegetative growth, promote reproductive growth, adjust plant type, determine the number of fruit branches, reduce nutrient consumption of invalid buds and promote early maturity. According to reason, the yield of cotton with conventional pruning should be higher than that of cotton with simplified pruning and no pruning, but in production practice, affected by planting density and environmental conditions, this is not entirely the case. therefore
2019-01-16 -
Cotton: Proper management can reduce boll shedding
There are three main reasons for cotton bud and boll shedding: one is physiological shedding, which is also the main reason for shedding. Because of the mutual influence of meteorological conditions and nutritional conditions, it leads to metabolic imbalance in cotton plants and insufficient nutrition, resulting in physiological shedding of buds and bolls; The other is that adverse weather conditions aggravate the harm of diseases and insect pests. Cotton aphids, red spiders and other pests bite leaves, reducing the photosynthetic capacity of leaves, resulting in malnutrition of buds and bolls, increasing shedding, excessive spraying, high concentration of liquid medicine, short spraying time interval and other phytotoxicity, which will also increase.
2019-01-16 -
Surprise fertilization of cotton to promote recovery
Yang Xiushen, a researcher at the Institute of Economic crops of the Provincial Academy of Agricultural Sciences, said: since July, our province has been hit by torrential rains, resulting in widespread flooding of farmland and serious harm to cotton. At present, it is critical to reduce waterlogging and fertilize and promote recovery. At the same time, it is necessary to remove weeds and loosen soil roots in time, and do a good job of replanting and replanting because of the appropriate field conditions. In order to remove the stagnant water in the field, we should take all necessary and possible means to remove the stagnant water in the field quickly, reduce the effect of waterlogging on the growth and development of cotton and reduce the mortality of cotton seedlings. For low-lying areas, especially for times
2019-01-16 -
Cotton
The cotton genus of Malvaceae is the only crop that produces fiber from seeds. Cotton fiber is the main raw material of textile industry; cottonseed contains oil and protein, which is the raw material of food industry; cotton short wool is an important material of chemical industry and national defense industry. Cotton is a large plant crop with deep roots, luxuriant leaves, many branches and long flowering period, which likes temperature and light, and is not resistant to shade; cotton has long growth period, large branches and leaves, large transpiration system, more water demand, developed root system, strong water absorption and drought tolerance; cotton requires deep soil, loose soil and suitable soil moisture.
2019-01-16 -
When the Meiyu season comes, cotton should be prevented and treated as soon as possible.
At present, the cotton seedling situation has entered the budding stage, but also entered the annual plum rain season. According to meteorological data, from May 30 to 31, some major cotton-producing counties, cities and districts in Wuhan, Xiaogan, Suizhou, and Ezhou received more than 100 mm of rainfall, causing torrential rain in some cotton fields, and cotton seedlings in depressed areas of some cotton fields were flooded. While cotton seedlings suffer from waterlogging, diseases and grass damage follow one after another. The "three evils" of cotton hit cotton farmers at the same time. According to the survey, there are now some cotton fields per
2019-01-16 -
The blind Toona sinensis harms new cotton leaves with holes and black spots.
A text message came from the 139mm-old 8164 mobile phone: there are many small holes and black spots in the new cotton leaves. What's going on? What kind of medicine do you use for it? A: it is likely to be caused by the harm caused by the stabbing of the blind Toona sinensis. The damage caused by piercing and aspiration of Toona sinensis at the top of cotton will cause tissue necrosis and form needle-like black spots, and then with the growth of healthy tissue, irregular holes will be formed in the leaves (its marginal tissue heals well, which is different from the perforation caused by disease). Toona sinensis is a frequent and frequent pest in cotton production in recent years.
2019-01-16