Mechanized Harvesting Technology of Cotton in the Yangtze River Valley
The stable development of the cotton industry has an important impact on the operation of agriculture, rural areas and the entire national economy. With the accelerating process of urbanization and the shift of large numbers of rural laborers to cities, planting cotton is more time-consuming and labor-intensive than other field crops. The shortage of labor has become an increasingly prominent factor affecting China’s cotton production stability. The development of cotton production mechanization and the need to address labor shortages in the cotton production process have become increasingly urgent. In recent years, the country has attached great importance to the development of agricultural mechanization, and has set clear targets for the development of cotton mechanization. The development of mechanization of cotton production in the Yangtze River Basin, especially in the cotton fields of Hubei Province, is facing unprecedented opportunities. Accelerated development will be achieved under the joint action of internal and external forces. New period. The full mechanization of cotton production is a systematic project, and mechanical picking is the key. Based on the machine-picking cotton technology, starting from the variety of matching, focusing on agronomy and agglomeration of agricultural machinery, adopting a systematic research strategy, researching cotton varieties, cultivating land, fine mechanical sowing, cultivating fertility, chemical control plant protection, mechanical picking, cotton stalk harvesting and subsequent processing To promote the mechanization of production and economic efficiency in all aspects, and finally realize full mechanization of cotton production. In the Yangtze River basin, machine-cultivated cotton varieties should be selected as concentrated bells. For the conventional varieties that are sensitive to defoliants, they are generally controlled at a density of 4000-6000 trees per mu. Late-stage management techniques for machine-cultivated cotton varieties can be performed with reference to the following schemes. 1. Water and fertilizer management of machine-picking cotton During the whole growth period, Mushi nitrogen (N) 18-20kg, phosphorus (P2O5) 5-7 kg, and potassium fertilizer (K2O) 10-12 kg. The application of pure nitrogen (N) accounted for 1/5-1/4 by bud fertilizer, 1/3 for flower bell, and 1/3 for top fertilizer. P and K are applied proportionally as appropriate. The management of water and fertilizer during cotton growth period should be based on the characteristics of water demand and fertilizer, soil water and fertilizer status, and cotton plant morphological characteristics. According to the growth characteristics of machine-picking cotton requiring early-maturing and early-maturing, the base fertilizer was applied at the early stage to promote strong seedlings, and the medium-duty flower and bell-fertilizer was stable and long-lasting, with less fertilizer applied at the later stage. Ensure that the central area is concentrated in peaches and bolls, and that the growth of cotton is uniform and beneficial to mechanical harvesting. Cotton water management and fertilizer management are basically in synch with each other. The drought in the previous period needs to be artificially irrigated. 2. Chemical control of machine-picking cotton (1) Plant type control Machine-picking cotton requires that the first fruit branch should be more than 18cm above the ground, and the general bud stage (8-9 leaf stage) should use 1.0-2.0g per acre, 2.0-3.0g for the first flowering period, and 3.0-4.0g for a blooming period. After the topping, use 4.0-5.0g, the height requirement is controlled at 70-100cm. According to the situation in the cotton field, the time and amount of chemical control are controlled to create a relatively compact plant type, and to promote the concentration of bolls and bolls. (2) Defoliation and ripening The effect of defoliation and ripening directly affects the quality, processing, storage quality and yield of harvested cotton. Should be scientific to grasp the spraying time, temperature changes and delamination ripening agent dosage. The amount of defoliation and ripening agent is selected: Generally, the use of shedding treasure (50% wettable powder) 20-40g + ethephon (40% liquid agent) 100-200ml + water 60kg per mu is sprayed. Rhodium powder Rh≥99.95% Properties: silver-white metal, extremely hard, wear-resistant, also has considerable ductility Application: It can be used as raw material for electrical instrumentation, chemical industry and manufacture of precision alloys. Rhodium powder is based on the widespread use of ruthenium in the industrial industry. Since rhodium is a rare metal required by the industry, the industry price is slightly higher than that of general non-ferrous metals. Rhodium, one of the rare elements, has various uses. Rhodium can be used to make hydrogenation catalysts, thermocouples, platinum-rhodium alloys, etc. It is also often plated on searchlights and reflectors, and is also used as a polishing agent for gemstones. and electrical contact parts. precious metal XI AN RHINE BIOLOGICAL TECHNOLOGY CO.,LTD , https://www.rhinebioteches.com