[Rice] Irrigation
   Studies have shown that rice is most sensitive to temperature from 10 days before and after booting to heading and flowering stage . The most suitable temperature is 25 °C ~ 30 °C. The daily temperature is higher than 30 ° C, which has obvious damage to flowering and fruiting. In the case of continuous high temperature above 35 °C during the booting stage , the rice flower is underdeveloped, the pollen is poor, and the vigor is decreased. In the case of continuous high temperature during the heading and flowering period, heat damage will occur, which will quickly lose water, affecting the flowering loose powder and the elongation of the pollen tube, resulting in the failure to properly pollinate, or the pollen will not be open.
   Dead to form empty shells, that is, "flowers are not real." The rice heading at a constant temperature of 38 °C is not strong, and the high temperature can directly kill the pollen.
   As the saying goes, rice is smashed with water. The rice heading and flowering period in our province is high in the summer, and it is very sensitive to water. It is necessary to keep the water level of 6 cm to 7 cm in the field to mitigate the effects of high temperature and heat damage. Combined with watering, rooting with 3% calcium perphosphate solution or 0.2% potassium dihydrogen phosphate solution
   Foliar application to enhance the resistance of rice to high temperature heat damage. When the total number of stems in the field reaches the expected number of panicles, it is necessary to dry the sun-dried field, and to the ground, there are about 2 mm cracks and then water, so that the ineffective tillering can be controlled, the roots can be promoted, and the deep water and nutrients can be absorbed. If there are conditions, it should be irrigated at night, or irrigated with long flowing water to cool down and humidify, to avoid or reduce the "high temperature ripening". Conditional farmers can use water spray method to reduce the ear layer by 4 °C ~ 5 °C in a short time . ( Yu Peijun )
   [corn] assisted pollination
   The experiment showed that under high temperature conditions, the photosynthesis of maize was weakened, the flowering loose powder was blocked, the growth process was accelerated, the number of ear differentiation was significantly reduced, the ear was significantly reduced, and various diseases were caused at the same time.
   In view of the recent high temperature and high soil loss in our province, we should pay attention to timely irrigation and supplementing, enhance the high temperature resistance of corn, and prevent "card neck drought" and high temperature heat damage. Sprinkler irrigation can be used to spray water directly onto the leaves of plants. For the defense of pollen naturally scattered
   The powder pollination ability is reduced, and the artificial pollination method such as bamboo stalk powder or powder coating can be used to increase the amount of pollen falling on the stigma, increase the chance of selecting pollination and fertilization, and reduce the influence of high temperature on the seed setting rate, generally increasing the seed setting rate. 5 % ~ 8 %.
   It is also possible to use chemical control: 1. External fertilizer application. The urea, the potassium dihydrogen phosphate aqueous solution, the superphosphate and the ash ash are used to filter the leaching solution in the corn break period, the heading stage, and the filling stage to continuously increase the moisture of the plant panicle.
   It can cool down and humidify, and at the same time provide the necessary moisture and nutrients to the leaves and increase the grain fullness. 2. Scientific fertilization, paying attention to the role of trace elements. Trace elements such as zinc and copper have a good promoting effect on the development of corn reproductive organs , which can enhance the vitality of filaments and anthers and the ability to resist high temperature and drought. The trace element fertilizer can be applied as a base fertilizer, or it can be sprayed on the foliage during the bell mouth to enhance the heat resistance of the corn. 3. Foliar spray fertilizer. When spraying, increase the amount of water and reduce the spray concentration.    (Wang Zicong)
   [cotton] stalks between rows
   Nowadays, cotton is in the flowering and ringing period, and it is also the period of maximum water demand in the whole life. The high temperature in the whole day causes the temperature inside the plant to rise, sometimes there will be burns, and even wilting and rolling leaves. If it meets with drought, it will easily cause the flower bell to fall off. If there is too much rain, it is easy to cause root growth to be blocked.
   In order to alleviate the harmful effects of high temperature and drought on cotton, we can lay wheat straw, straw or oil in the cotton line.
   Straws such as vegetables to help moisturize, cool down, inhibit grass and increase fat. When the weather is significant drought, if it is found in cotton plants wilting phenomenon before 11 am and after 5 pm is still not back to normal for a timely diversion furrow irrigation, improving field microclimate. The irrigation time is best carried out in the morning and evening to avoid excessive temperature difference between the water and soil, causing the sudden fall of the cotton bud bell. At the same time, combined with the application of drought-resistant or anti-transpiration agents, such as dry land dragons.
   Foliar application of micro-fertilizer, especially boron fertilizer, can supplement the trace elements needed in current cotton, which is conducive to cotton flowering and fertilization and bud-enhancement. Generally, the spraying of 0.1% to 0.2% of the borax solution is 50 kg to 70 kg, once every 7 days, and even spraying 3 to 4 times, the effect is very good. At the same time, it is necessary to strengthen the prevention and control of cotton red spiders and cotton bollworms. (Xu Zhiang)
   [Tomato] "One drop two defenses"
   Currently in the hot season of tomato production, if farmers do not understand the relevant management techniques, blindly relying on subjective awareness of tomato production management will often cause greater losses. Should pay attention to "one down two defenses":
   Water spray cooling: When the temperature is high, the edge of the blade is burnt, and when the chlorophyll is fading, the whole blade is dry. The method of prevention and control is to use a sprayer to spray water while cooling. Especially from 11:00 to 14:00 at noon , pay attention to when the temperature is higher than 35 °C or 40 °C for 4 hours, it is necessary to take measures to cool down to prevent stem and leaf damage and fruit abnormality.
   Controlling falling flowers and falling fruits: If the daytime temperature exceeds 34 °C, the nighttime temperature exceeds 20 °C, or the daytime high temperature 40 °C lasts for 4 hours, the elongation of the style is obviously higher than that of the anther, causing the ovary to shrink, causing the male and the stamen to fail to pollinate normally. Fertilization and falling fruit. The prevention and control methods include: ( 1 ) using formula fertilization technology, and applying nitrogen fertilizer. ( 2 ) Small water pouring, avoiding flooding of large water, ensuring water and temperature coordination. ( 3 ) When pollination is poor, auxin, such as 2,4-D, etc., spray or smear may be used .
   Prevent 2,4-D phytotoxicity : Use 2,4-D smear to master the concentration to avoid phytotoxicity. The concentration ratio is: the temperature after colonization is 15 °C ~ 20 °C, the concentration is 10 mg ~ 15 mg / kg ( that is, take 1 ml 1.5% 2,4-D plus 1 kg water to make 15 mg / kg, add 1.5 kg water Then formulated into 10 mg / kg ) . After the temperature rises, it can be reduced to 6 mg to 8 mg / kg. Pay attention to prevent direct application to the twigs or young leaves; do not spray; if the field is large, you can use the anti-falling 25 mg ~ 40 mg / kg spray.
Source: Henan Daily Rural Edition
Â
Â
The trunking Rail system mainly contains some accessories that match the Grille Light, such as rails, trunking, Connection Accessories, and Suspension Accessories. Because there are many ways to install this Grille Light.
Guide Rail: This installation method relies on the Track head to conduct electricity, and the Led Grille Light can move freely on the rail.
Bridge: This installation method is to connect trunkings with Connection accessories, and the wires can enter the lamp body through trunking. The entire lamp body can be hoisted and ceiling mounted.
Trunking: Although this model and Bridge have trunking, the two styles of trunking are different. This type of trunking is already wired before leaving the factory. In other words, as long as the first one is connected to the mains, the other lights are connected to the lights.
If you want to understand these installation methods more clearly, you can watch the video.
If you don't know what accessories you need, as long as you tell us your needs, we can match them for you.
Led Supermarket Lighting,Office Lighting Fittings,Commercial Office Lighting,Flexable Track Lighting,Retail Lighting Led
SHENZHEN LITEHOME OPTOELECTRONIC TECHNOLOGY CO., LTD. , https://www.litehomelight.com