With the continuous improvement of the quality of hybrid corn seed production, it is particularly important to strengthen the post-stage management of hybrid corn seed production. In the process of hybrid corn seed production, due to a large number of production procedures, planting farmers tend to loosen the field management in the later period. This not only affects the seed production but also affects the seed quality, and brings to the seed production units and farmers. Serious loss. In order to improve the commercial quality of seeds and enhance market competitiveness, it is very important to strengthen the post-stage management of hybrid corn-based farming. To this end, the following aspects of technical measures must be strengthened for the post-management of hybrid corn-based farming. I. Clear weak seedlings Clearing weak seedlings is an important part of guaranteeing the quality of seed. Later in the field, the management of weak seedlings is often neglected, resulting in loose powder and self-inflicted plants, which seriously affect the purity of seeds. Therefore, after the male parent has finished, it is necessary to remove small seedlings, weak seedlings, and diseased seedlings in a timely, clean and thorough manner. This will help ensure the purity of the seeds, help improve the ventilation and light conditions of the system, and help improve the seed production. Second, artificially assisted pollination Artificially assisted pollination is an effective means to increase seed-setting rate, increase seed production, and prevent flowering. For some varieties, the ear of the pod is long and tight, and the female parent who is slow in threading is cutting the 2-3cm in advance at the top of the cilantro, which can promote silking in advance. The length of the spit produced before the mother's filigree looting has not been able to accept the pollen plants. To cut off a small amount of filaments, fresh pollen is collected for artificial pollination. The pollination time is best performed from 9:00 am to 11:00 am. If the dew does not dry beforehand, the pollen may be easily broken by water. Excessively late temperature reduces pollen viability. After the rain, fine weather must wait until the water droplets on the tassels have evaporated. Once every other day, usually 2-3 times. Two people can also pull the male parent with a rope or a T-shaped frame made of bamboo poles to push the tassel to shake the plants for pollination, so that the male parent pollen can evenly fall on the mother's filigree, and pollen can also be collected manually. Pollination-assisted pollination by pollination . Third, pest control The late cropping period is the peak period of various pests and diseases. The corn spider mite is hidden on the back of the leaf blade and sucks leaf juice. The corn leaves first appear spotted stripe chlorosis, and then the whole leaf turns yellow and loses green. The red spider has a large amount of fertility, which is a heavy burden for disasters. The lighter ones cut their production, and the severer ones are never produced. Prevention and control measures: â—‹ 1 thoroughly remove the source of weeds in the fields, roadsides, ditches and borders. â—‹2 Drug control Sprayed with 40% of fruit cream, 20% of dicofol, 50% of marathanoic sulfate 1000-1500. Most of corn borers occur on corn tassels. If they are not controlled in time, the slime's mucus adheres to the pollen, making it difficult for the pollen to spread out. The seed setting rate is not good and the yield is reduced. The prevention and treatment should be sprayed with 40% omethoate emulsion and 80% dichlorvos 1000 times spray before paternal male ears loose powder. We used 25% carbendazim WP, 40% konjac powder and 75% mancozebite 400-600 times to spray foliar to prevent and treat diseases such as sheath blight and size patch. Fourth, remove the father The paternal pollination task was completed. The tassel was brown and the father was removed promptly. â—‹1 is conducive to improving ventilation and light conditions in the production of crops, and reducing the contradiction between water and fertilizer in the later period of the female parent; â—‹2 is conducive to maternal photosynthesis and accumulation of dry matter, and increasing seed yield; â—‹3 is beneficial to Give full play to the advantage of female parenting, speed up the maturation of seeds, and increase the fullness of seeds. â—‹4 It is beneficial to prevent man-made and man-made man-made or mechanical confounding during harvest to ensure seed purity. V. Irrigation and drainage After the corn planting field is still at the peak of water demand. The water holding capacity from tasselling to mature soil should be maintained between 70-80%. In case of high temperature and drought, it should be timely watered to keep the ground moist, speed up the grouting attack period, promote nutrient operation, and ensure that the grain is full. Pay attention to the amount of irrigation should not be too large, the middle of milk to stop irrigation. If you encounter a disaster, you should drain the water in time to prevent flooding and submergence. Sixth, make-up quick-effect fertilizer For lands where the production of land for planting is relatively thin, such as sand-falling areas, slope-beam areas, uncultivated wasteland, and areas with low fertilization in the early stages, when the leaf color becomes shallow, yellowing grows poorly, and there is a phenomenon of defertilization, in order to prevent premature aging and promote maturity, To increase production, quick-release fertilizer should be applied in a timely manner. Generally about 5kg urea urea, ammonium bicarbonate 8-10kg. Fertilizer should not be applied too late, so as not to cause late-growth greed, affect the maturity. For parts of the plot where there is a significant delay in the growth period, potassium dihydrogen phosphate must be sprayed on the roots, sprayed with Baobao and Jiuwan to promote early maturation. Seventh, standing poles The corn seeds enter the late cooked phase (when the grain cover hardens) to stand on the skin, and the skin pods must be completely removed. The ears and leaves of the fruit should be smashed to the end to prevent accumulation of water, so that the entire exposed ears can be exposed to sunlight and accelerate the dehydration of the ear. , Reduce grain moisture and promote early harvest. In particular, the combination of a long growing period, a late-maturing glutton, and a high moisture content of the seed can generally mature 7-10 days in advance, and at the same time there is a certain effect of increasing production. Mink skin can be harvested after 15 days, which has a significant effect in preventing early frost damage. Eight, timely harvest and drying Timely harvesting and drying are key measures to improve grain weight and quality. Studies have shown that: When the ear reaches a physiological maturity, that is, the grain filling milk line disappears, and when the black layer appears at the base, it is a sign of maturation. At this time, the best harvest time is the highest grain weight and the best commercial quality. The corn cobs placed on the field after harvesting should be spread out in a timely manner, and the thickness should not exceed 10 cm. Stacking and heat mildew are strictly prohibited. Every day, diverting the sun, change the position, it is conducive to ventilation and dehydration as soon as possible. At the same time in the process of turning over the sun to pick the net ear, mildew, pests and ear. The sun will be turned during the day and covered at night to prevent dew and rain soaking, so that the moisture content of the seed can be dried to safe moisture.
Compacted Oxygen Cylinder Filling System
ETR Oxygen Cylinder Filling System is consisted of the air compressor, air-water separation device, refrigerated air dryer, air dew point monitoring device, multi-stage filter, air buffer tank, air moisture monitoring device, Oxygen Generator, oxygen buffer tank, flow meter, online oxygen monitoring device, oxygen booster and cylinder filling station, smart electric control cabinet, computer monitoring system, remote network monitoring system..
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