Leguminosae forage grass-- big wing bean
Big wing bean, native to Central and South America, was introduced from Mexico in Australia, and was introduced by Australia in 1974. Now it is planted in Guangxi, Guangdong, Fujian, Jiangxi and other provinces with good performance. The leaves of large-winged beans are green and sparsely hairy, with silver-gray fine hairy hairs on the back, and dark purple racemes. Is an excellent legume forage, green feeding or preparation of hay can be, cattle, sheep like to eat, especially deer like to eat, seeds for quail, pigeon, turkey and other birds like to eat. It can be mowed 2-3 times a year, and can produce fresh grass 45000~60000kg or hay 8250~9000kg per hectare. According to the analysis of nutrition content of pterygium stem and leaf in bud stage by Liangshan Prairie Station, crude protein 17.70%, crude fat 4.92%, crude fiber 37.28%, nitrogen-free extract 32.30%, crude ash 7.80%, calcium 1.22%, phosphorus 0.24%. According to the study of Guangxi Animal Husbandry Research Institute, the digestibility of crude protein, crude fiber, nitrogen-free extract and total digestible nutrients per kilogram of stem and leaf dry matter were 8.0%, 71.0%, 85.6% and 147.5g, respectively.
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Water-saving cultivation of cotton in semi-arid saline-alkali soil
Cotton has always been an important economic crop, and the continuous improvement of cotton yield and quality is of great significance to increase agricultural efficiency and increase farmers' income. Over the years, through gradual exploration, a set of relatively complete cotton cultivation techniques in semi-arid saline-alkali land have been formed, and drought-resistant cotton planting has achieved the goal of early maturity, high yield and high quality. The problems of cotton seedling emergence, seedling protection, slow growth and late ripening in saline-alkali soil were solved due to the lack of water resources. The yield-increasing technology of cotton in semi-arid saline-alkali land mainly includes seed preparation, fertilization, chemical control, pruning and so on.
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Growth characteristics and Fertilizer and Water Management of Cotton at Bud stage
The growth characteristics of cotton at bud stage cotton entered a period of both vegetative growth and reproductive growth from the beginning of budding, but it was still dominated by vegetative growth. The photosynthates in the bud stage are mainly transported to the vigorous growth parts of the main stem and fruit branches, and few are supplied to the buds. With the rising temperature, the growth of roots, stems, leaves, fruit branches and flower buds of cotton is obviously accelerated, plant metabolism is more and more exuberant, physiological activities are enhanced, photosynthetic productivity is high, and root growth reaches a vigorous period. The main purpose of this period of management is to grow stably and build a high yield shelf. The growth of normal cotton at bud stage.
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