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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Применить Всего найдено 8. Отображено 8.
20-08-2014 дата публикации

Cultivation method for increasing yield of loessal soil spring maize

Номер: CN103988678A
Принадлежит:

A cultivation method for increasing the yield of loessal soil spring maize includes the first step of selecting fields, the second step of fertilizing according to fertility characteristics of the fields, the third step of preparing the fields after fertilization, the fourth step of precisely sowing on the prepared fields and the fifth step of carrying out field management. With the combination of fertilization requirement characteristics of the spring maize and according to feeder capability of soil and yield targets, the application quantity of nitrogenous fertilizers, phosphorus fertilizers and potash fertilizers is determined, and crop physiological problems caused by blind fertilization and excessive fertilization are avoided. Nitrogen, phosphorus and potassium combined application is realized, organic fertilizers are combined with inorganic fertilizers, reasonable close planting is adopted, and later seedling placing, seedling thinning, final singling, topdressing, intertillage and ...

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20-08-2014 дата публикации

Cultivation method for increasing yield of high-moisture soil spring maize

Номер: CN103988680A
Принадлежит:

A cultivation method for increasing the yield of high-moisture soil spring maize includes the first step of selecting fields, the second step of carrying out formulated fertilization according to the fields with different fertilities, the third step of preparing the fertilized fields, the fourth step of sowing precisely on the prepared fields, and the fifth step of carrying out field management. With the combination of fertilization requirement characteristics of the spring maize and according to feeder capability of soil with different fertilities and yield targets, the application quantity of nitrogenous fertilizers, phosphorus fertilizers and potash fertilizers is determined, and crop physiological problems caused by blind fertilization and excessive fertilization are avoided. Nitrogen, phosphorus and potassium combined application is realized, organic fertilizers are combined with inorganic fertilizers, plastic film mulching is adopted, and later seedling placing, seedling thinning, ...

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20-08-2014 дата публикации

Cultivation method for increasing yield of loessal soil autumn potatoes

Номер: CN103988676A
Принадлежит:

A cultivation method for increasing the yield of loessal soil autumn potatoes includes the first step of selecting fields, the second step of carrying out formulated fertilization according to the fields with different fertilities, the third step of preparing the fields after fertilization, the fourth step of precisely sowing on the prepared fields and the fifth step of carrying out field management. With the combination of fertilization requirement characteristics of the potatoes and according to feeder capability of soil with different fertilities and yield targets, the application quantity of nitrogenous fertilizers, phosphorus fertilizers and potash fertilizers is determined, the application quantity of nitrogenous fertilizers, phosphorus fertilizers and potash fertilizers is determined, and crop physiological problems caused by blind fertilization and excessive fertilization are avoided. Nitrogen, phosphorus and potassium combined application is realized, organic fertilizers are combined ...

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13-08-2014 дата публикации

Planting method for improving yield of moisture soil summer potatoes

Номер: CN103975743A
Принадлежит:

A planting method for improving yield of moisture soil summer potatoes comprises the steps of firstly, selecting a plot; secondly, performing formula fertilization aiming at the fertility characters of the plot; thirdly, preparing the fertilized plot; fourthly, precisely sowing on the prepared plot; fifthly, performing field managing. The applying amounts of a nitrogen fertilizer, a phosphate fertilizer and a potash fertilizer are determined by combining the fertilizer needing characters of the potatoes according to the soil fertility supplying capacity and a target yield, and the crop physiological problem caused by blindness fertilization and excessive fertilization is avoided; organic matter and inorganic matter are combined by the formula applying of N, P and K, ridging planting is adopted for the adhered and heavy soil with an irrigation condition, and the use rate of the fertilizers is improved by combining the intertillage and earth up in the later period, so the aims of improving ...

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13-08-2014 дата публикации

Planting method for improving yield of aeolian sandy soil spring corns

Номер: CN103975742A
Принадлежит:

A planting method for improving yield of aeolian sandy soil spring corns comprises the steps of firstly, selecting a plot; secondly, correspondingly performing formula fertilization aiming at the plot with different fertility capacities; thirdly, preparing the fertilized plot; fourthly, precisely sowing on the prepared plot; fifthly, performing field managing. The applying amounts of a nitrogen fertilizer, a phosphate fertilizer and a potash fertilizer are determined by combining the fertilizer needing characters of the spring corns according to the soil fertility supplying capacity and a target yield, and the crop physiological problem caused by blindness fertilization and excessive fertilization is avoided; organic matter and inorganic matter are combined by the formula applying of N, P and K, plastic mulch is adopted for covering, and seedling trimming, seedling thinning, seedling fixing, fertilizing, intertillage and the like in the later period are performed, so the use rate of the ...

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20-08-2014 дата публикации

Cultivation method for increasing yield of silting soil spring maize

Номер: CN103988679A
Принадлежит:

A cultivation method for increasing the yield of silting soil spring maize includes the first step of selecting fields, the second step of fertilizing according to the fields with different fertilities, the third step of preparing the fields after fertilization, the fourth step of precisely sowing on the prepared fields and the fifth step of carrying out field management. With the combination of fertilization requirement characteristics of the spring maize and according to feeder capability of soil with different fertilities and yield targets, the application quantity of nitrogenous fertilizers, phosphorus fertilizers and potash fertilizers is determined, and crop physiological problems caused by blind fertilization and excessive fertilization are avoided. Nitrogen, phosphorus and potassium combined application is realized, organic fertilizers are combined with inorganic fertilizers, double-ditch film mulching is adopted, and later seedling placing, seedling thinning, final singling, topdressing ...

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20-08-2014 дата публикации

Cultivation method for increasing yield of loessal soil soybeans

Номер: CN103988677A
Принадлежит:

A cultivation method for increasing the yield of loessal soil soybeans includes the steps of field selection, field preparation, fertilization, variety selection, sowing, later field management, plant disease and insect pest prevention and harvesting. With the combination of fertilization requirement characteristics of the soybeans and according to feeder capability of loessal soil and yield targets, the application quantity of nitrogenous fertilizers, phosphorus fertilizers and potash fertilizers is determined, and crop physiological problems caused by blind fertilization and excessive fertilization are avoided. Nitrogen, phosphorus and potassium combined application is realized, organic fertilizers are combined with inorganic fertilizers, and intertillage and earthing-up are carried out, so that the utilization rate of the fertilizers is increased. The yield of the loessal soil soybeans is effectively increased, and the aims of high yield, cost reduction and efficiency are achieved.

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14-07-2023 дата публикации

Product recommendation method and device, electronic equipment, storage medium and program product

Номер: CN116431933A
Принадлежит:

The invention provides a product recommendation method and device, electronic equipment and a storage medium, and can be applied to the financial field or other fields. The method comprises the following steps: extracting at least one first content feature of a new product; an initial first weight is given to each of the first content features, the first weight of the first content feature is updated according to user feedback, and the user feedback is obtained based on the first content feature of the new product in the first time period; obtaining a second content feature of at least one old product; determining a weight Euclidean distance between every two products in the product set according to the first content feature, the updated first weight and the second content feature; determining a neighbor set of the new product according to the weight Euclidean distance, wherein the neighbor set comprises at least one old product; determining a prediction score of the new product according ...

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