At present, the “small heat†has passed, and the “great heat†is approaching. The first rice in the middle and lower reaches of the Yangtze River is from tillering to booting and booting, and the first rice in the southwest is from jointing booting to heading and flowering, which is a key period for strengthening field management and promoting yield formation. . This year, the transplanting of the southern one-season rice was generally normal and the growth was good in the early stage. However, since the flood season, heavy rains frequently occurred, the rainfall was high, and the sunshine was less, which was not conducive to the control of rice crops in one season; flood recurrence occurred in some areas, and paddy fields Being flooded is extremely detrimental to rice growth. Experts predict that high-temperature drought is more likely to occur in the late growth stage of rice. At the same time, mid-lower reaches of the Yangtze River may experience high-temperature heat damage during heading and flowering stages of the mid-season rice. Delays in the growth of live-seeding rice have increased the risk of low temperatures in late-season rice, and sheath blight and other diseases occur. Increased degree. In view of the current growing situation of the southern rice seedlings in the south and the weather conditions in the middle and later stages, we must focus on field management by focusing on “four primary defenses, four flood preventions, drought protection, seedlings, high temperature and heat damage, pest and disease prevention, and cold dew exposureâ€. , to promote the transformation of seedlings, take advantage of high yield shelf.
The first is flood control and drainage, which promotes the restoration of growth. When the rice is flooded from tillering to jointing stage, the fertility process is almost stopped, the heading period is elongated, and the growth period is delayed by 2-3 days. For flooded fields, timely and graded drainage should be used in combination with gentle seedlings; the water layer should be properly controlled and the high-temperature sunny days should not be used to drain the water once. It is necessary to prevent green dead seedlings and improve the root environment to promote root activity. After the disaster, timely recovery and recovery of available nitrogen fertilizer and potassium dihydrogen phosphate, to promote the recovery of growth; water receding after the strengthening of pest control to prevent the spread of spread. For severely harvested fields, according to the local season, grasp the time limit, use early-maturing early-season varieties to replant "early turn late," and flooded undamaged fields can also cut seedlings in time, apply fertilizer to promote budding, and accumulate and regenerate. Rice, reduce output loss.
The second is alternating wet and dry to strengthen group control. For the mid-season rice that is still in the tillering stage, when the number of stems in the population reaches 80% to 90% of the expected number of panicles, the natural water cuts off the fields. The hybrid middle japonica rice fields should be put early and put down gently, so that the entire field soil will not sink. Feet, field surface see new roots, rice plant leaves straightened, faded yellow leaves. The population of hand-introduced rice seedlings was controlled at 1.3-1.4 times the number of suitable panicles, and the throwing rice and machine-introduced rice were controlled at 1.4-1.5 times, and the live-rice rice could not exceed 1.6 times. Prosperous groups with fertile soil are properly restocked and the middle and small groups in the soil fertility are lightly placed. From jointing to 15 days after heading, 2-4 cm water layer and wet and dry alternate wet and dry irrigation are used. Grains are grouted until one week before harvest. 2-4 cm water layer and lightly dry (15 cm deep and high yield bottom Anhydrous) alternating wet and dry irrigation ensures the water needed for grain filling, improves root activity and leaf photosynthetic function, and improves seed setting rate and grain weight. Insist on cutting off water a week before harvest, avoid water cuts prematurely, avoid unfavorable growth, significantly reduce yield, and deteriorate quality of rice.
The third is scientific fertilization to promote flower growth and increase grain weight. The application of panicle fertilizer should be carried out on the basis that the peak seedlings of the population have passed and the leaf color has faded significantly. For the field with suitable number of stems and stems and normal color of leaves, panicle fertilizer was applied twice in the inverted 4 leaves and inverted 3 leaves. Indica rice did not exceed 40% of the total nitrogen applied in a single year, and indica rice did not exceed 30%. For the small number of stems in the population and the yellow color of the leaves, the panicle fertilizer was applied 2-3 times at the beginning and the end of the inverted 3 leaf stage. The amount of panicle fertilizer was appropriately increased by 10% to 30% and promoted the weak and strong. For groups with large numbers of stems and leaves and dark leaves, it is generally postponed to reduce the amount of seedlings in the inverted 3 or 2 leaf stage. During the jointing stage, potassium and silicon fertilizers are reasonably applied according to the degree of soil potassium and silicon nutrition deficiency. Generally, potassium chloride is 5-10 kg and silica is 5 kg. Indica rice is susceptible to premature senescence. Appropriate application of granules can be made from the heading to the early stage of grouting. Generally, 3-5 kg ​​of ammonium sulphate or urea can be used in the mu. Foliar dressings can also be used to promote grain filling and increase grain weight.
The fourth is to adjust the temperature with water to prevent heat damage. Rice that has entered the booting stage to the heading stage, in case of persistent high temperatures above 35 °C, will affect pollination and seed setting rate of flowering, can take deep water irrigation (water layer about 10 centimeters), adjust temperature with water, reduce the temperature of the ear layer; take the leaf surface Spraying phosphorus and potassium fertilizers and other measures to increase the resistance of rice plants to high temperatures, ease or reduce the high temperature hazards. For drought-fed rice fields, we must make full use of various sources of water, replenish water in a timely manner, increase irrigation efficiency, and promote rice growth and development.
The fifth is early precocious puberty to prevent cold damage. Late-season rice with late-growing rice in the Yangtze River valley, late-maturing rice that delayed the birth process due to flooding, and late-season paddling after floods should adopt measures to promote early-onset cultivation and management to accelerate the birth process; when low temperatures come, we must adopt irrigation. Deep water, spraying gibberellin, spraying foliar fertilizer and other comprehensive measures to reduce the impact of low temperature.
Sixth, it is the unified defense rule that strictly controls pests and diseases. The current high temperature and high humidity in the field are very suitable for the occurrence of diseases and insect pests. It is necessary to strengthen the report of disease and insects, accurately grasp the development of pests and diseases, and strengthen the overall prevention and control of pests before and after the heading date. Focus on the prevention and control of rice leaf roller, rice planthopper and rice blast, sheath blight, and rice smut. The first prevention of rice smut disease should be carried out 10 to 15 days before the break; vigorously promote the professional system. Anti-rule, improve the level of green prevention and control, reduce the amount of pesticides, and effectively reduce the loss of pests and diseases.
The Zoom Dome Camera/ Zoom Dome Security Cameras/ Dome Zoom Camera 1080p/ Zoom Dome CCTV Cameras/ Zoom Dome Camera HD/ Zoom Dome Camera Waterproof belongs to both the Zoom Camera and the Dome Camera. I have introduced the Dome Camera before, this time let me introduce the installation skills and the maintenance skills of the Dome Camera for you.
The installation skills of the Dome Camera
1. Get familiar with the product performance
Having gotten the Dome Camera, engineers and users should be familiar with the technical parameters of the Dome Camera, such as the input voltage, power, functions, etc.
2. Check
Before the installation, the Dome Camera should be tested and adjusted to keep the camera working normally.
3. Installation method
Before the construction, according to the environment, safety, and aesthetics, these installation methods can be adopted, such as the wall mounting or hoisting.
4. Installation angle
The installation angle of the Dome Camera can directly affect the scope of the monitoring image, so the Dome Camera should be installed according to the field requirements. For instance, if the Dome Camera is installed at the place less than 6m to the area entrance, the camera angle should be 30°-60°; if it is installed at the cash register, the camera angle should be at ±15°-20°. In short, the backlighting should be avoided when installing the Dome Camera, so as to meet using requirements.
5. Video interface processing
The video signal output port, power input port, and control signal port of the dome camera are very important. When installing, try to do the waterproof and oxygen-proof dealing with the these ports, to avoid those phenomenon happens in the future, such as being unstable, uncontrolled, or even no image display.
The maintenance skills of the Dome Camera
The Dome Camera generally need to work continously for 24 hours, so well maintain the Dome Camera can extend its using life, and ensure the stability of the camera's image effect. The following points should be paid attention to:
1. Pay attention to the stability of the voltage of the Dome Camera, otherwise, it will affect the image effect and even cause the camera damage;
2. Always check whether the wire is damaged or aging, to avoid the abnormal situations;
3. Avoid the long-time direct sunlight or strong light, to avoid damage to the camera CCD;
4. Clean the Dome Camera frequently, such as the camera shell. Try not to open the case, if you need to open it, power off first. Create the Dome Camera files for the inspection and testing in the future.
All in all, I hope that the introduction about the the installation skills and the maintenance skills of the Dome Camera can help the Dome Camera and Zoom Dome Camera users better use their cameras.
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