The lack of grain of corn seriously affects the corn yield, and its manifestations are diverse: one side of the whole ear is short of grain; the intergranular lack of grain is curved; the ear is scattered on a few grains; the top lack of grain is bald. One, lack of reasons In the later stage of female ear differentiation, due to lack of nutrition, the differentiation of the apical and individual florets is affected. 2. Flowering pollination is not good or pollination is not fertilized, flowers are not pregnant. 3. The baldness and lack of grain are caused by part of the pest flower or the grain is eaten. 4. The genetics of some hybrids cause alopecia areata. Second, control measures 1. Reapply tapping fertilizer. Maize topdressing should generally be based on the principles of light weight, medium weight, and full complement. In the large bell mouth, mu recovers 15-20 kg of urea; from heading to grain filling, 0.25 kg of potassium dihydrogen phosphate and 0.5-1 kg of urea are used per mu, 40-50 kg of water is sprayed, and leaves are sprayed outside the roots in the afternoon. top dressing. 2. To tassel. Maize detasseling is a simple and easy-to-produce measure of increase in yield. Experiments have shown that the detasseling can be matured 5 to 7 days earlier, and the ear is thick and long and the grain is full, increasing the yield by 5% to 10%. Detasseling method: It is advisable to remove the parietal lobe immediately after the tassels have been removed and have not been loosened. When detaches, go 1 line every 1 to 2 lines, and do not abdicate by 3 lines on the ground so as not to affect the output. 3. Artificially assisted pollination. In the flowering period of maize, in case of adverse climatic conditions, the pollen will lose its vitality, and the female ear will not receive enough pollen and suffer from lack of grain. At this time, it is necessary to assist pollination, and artificially assisted pollination should be carried out during the period of Taro Powder. Artificially assisted pollination commonly used methods: First, pull rope method, every 5 to 6 lines of two pull rope, walking along the line, let the rope shake tassels, so that tassel loose powder. The second method is to shake the plants. Pollen plants will be pollinated and pollinated. Pollination time; conducted from 8 to 11 am, generally 2 to 3 times, so that corn can be increased and baldness reduced. 4. Cut short filaments. After the female silk of maize has exposed the loquat leaves, the pollen falls on the filaments and pollinated. After the female flowers are fertilized, the filaments are shriveled. However, due to the difference in the extraction time of the filaments, the upper part is drawn late. Some filaments do not get pollen and continue to grow. 10 to 15 centimeters long. As the filaments are too long to cover each other, it is not conducive to the pollination of the filaments below. Therefore, the filaments should be cut short, and 1.5 to 2 centimeters can be left, so as to achieve short and long fronts without affecting each other, which is conducive to pollination, thus reducing baldness and lack of grain. 5. Timely prevention of pests and diseases.
Security Camera
Security Camera Surveillance camera is a semiconductor imaging device, which has the advantages of high sensitivity, strong light resistance, small distortion, small size, long life, and anti-vibration. Surveillance cameras in security systems.
Image generation is currently mainly from CCD cameras, and the stored charge can also be taken out to change the voltage. It has the characteristics of anti-vibration and impact and is widely used.
Security Camera Surveillance camera is a semiconductor imaging device, which has the advantages of high sensitivity, strong light resistance, small distortion, small size, long life, and anti-vibration. Surveillance cameras in security systems.
Image generation is currently mainly from CCD cameras, and the stored charge can also be taken out to change the voltage. It has the characteristics of anti-vibration and impact and is widely used.
Security Camera Surveillance camera is a semiconductor imaging device, which has the advantages of high sensitivity, strong light resistance, small distortion, small size, long life, and anti-vibration. Surveillance cameras in security systems.
Image generation is currently mainly from CCD cameras, and the stored charge can also be taken out to change the voltage. It has the characteristics of anti-vibration and impact and is widely used.
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