169results about How to "Extended growth time" patented technology

A crystalline semiconductor film in which the position and the size of crystal grains are controlled is provided, and a TFT that can operate at high speed is obtained by forming a channel formation region of the TFT from the crystalline semiconductor film. A heat retaining film is formed on an insulating surface, a semiconductor film is formed to cover the heat retaining film, and a reflective film is formed to partially cover the semiconductor film. The reflective films and the semiconductor film are irradiated with a laser beam. The reflective film creates a distribution in effective irradiation intensity of laser beam on the semiconductor film. The distribution, with the heat retaining effect provided by the heat retaining film, generates a temperature gradient in the semiconductor film. Utilizing these, the position where crystal nuclei are to be generated and the direction in which crystal growth should advance can be controlled and crystal grains having a large grain size can be obtained.

The invention relates to the technical field of plant cultivation substrates, in particular to a high-heat-preservation substrate for recovery of broken hill vegetation in a high elevation region. 45-50% by volume of sand loam, 35-40% by volume of highland barley straw, 3-6% by volume of organic fertilizer, 0.01-0.03% by volume of pellet agent, 0.01-0.03% by volume of polyvinyl acetate, 0.01-0.03%by volume of sodium carboxymethylcellulose, 2-4% by volume of humic acid, 2-4% by volume of liquid emulsified asphalt and 0.03-0.10% by volume of plant seeds are taken, the substrate thickness is 2-6cm, the highland barley straw particle size is 2-4 cm, the organic fertilizer is faeces of Tibetan-sheep and yaks, highland barley straw and rape stalk with the particle size smaller than 4 cm, faeces and the stalk are mixed according to the volume ratio being 1:(1-3) and then subjected to composting fermentation, the composting time is from October to April the following year, turning and ventilation are conducted semimonthly, film mulching is used for covering at night, the fermentation temperature is maintained, and the seeds comprise one or multiple of pennisetum centrasiaticum, orinus thoroldii (Stapf ex Hemsl.) bor, rrtemisia wellbyi Hemsl. et Pears. ex deasy, oxytropis sericopetala, rhododendron nivale and sabina chinensis. The substrate has the advantages of being high in heat preservation, capable of prolonging plant growth time, resistant to washout, good in water-retaining property and capable of increasing the broken hill coverage rate.

The invention provides a crop cultivation method for soil improvement and belongs to the technical field of crop cultivation. The method comprises the following steps that (1) rolling is conducted after soil is subjected to deep scarification, first crops are sowed, a drip irrigation tape is laid, after the first crops are harvested, straw of the first crops is smashed and deeply ploughed into thesoil or covers the ground surface of a farm field, and rotary tillage is conducted once; (2) in the second year, rolling is conducted after soil is subjected to deep scarification, second crops are sowed, a drip irrigation tape is laid, after the second crops are harvested, straw of the second crops is smashed and deeply ploughed into the soil, and rotary tillage is conducted once, wherein the second crops comprise gramineous crops or leguminous crops; (3) in the third year, rolling is conducted after soil is subjected to deep scarification, third crops are sowed, a drip irrigation tape is laid, after the third crops are harvested, straw of the third crops is smashed and deeply ploughed into the soil, and rotary tillage is conducted once, wherein the third crops comprise gramineous cropsor leguminous crops; the second crops are different from the first crops and the third crops. According to the method, the soil can be obviously improved, and the yield increase effect is obvious.