Spring corn double film covering technology
For land preparation, it is advisable to choose sunny, ventilated, deep, loose, fertile, well-watered and well-drained plots. The base fertilizer should be based on organic fertilizer, and the sooner the combination of autumn tillage, the better, the fertilizer can be fully decomposed and decomposed and soil fusion. According to the test, the autumn base fertilizer increased the yield by 14.9% compared with the spring application base fertilizer, and the base fertilizer could be applied to the acupoints.
The selection of good varieties should be based on the short growth period of Yandan No. 4 and Denghai No. 1, which is suitable for the varieties after spring sowing in Shandong.
Sun-breeding and germination can promote seed ripening. After 2 days of sowing, the germination rate can be increased by 13%~28%, and the seedling can be emerged 1~2 days earlier.
The first layer of double-membrane seedlings is a sowing film, which is directly covered on the sowing ridge; the second layer is made of a large arched shed. Double film coverage, mainly to warm and moisturize. Practice has proved that this is the main measure to resist the rainy weather. After 5 to 6 days of sowing, the seedling emergence rate of double-membrane seedlings was 8.93% higher than that of single-membrane seedlings. Sowing film: Before the film is covered, the ridge surface is flattened, and the herbicide corn treasure and Yutian net are evenly sprayed. Since the underground pest activity in the spring begins to be rampant, it is best to seed the seed with phosgene before sowing. The seed is 2.5~3.0 kg, the hole is planted, 2 capsules/hole, and the sowing depth is 3~7 cm. Broken membrane seedlings: When the top soil emerges, the membrane is broken in time and the membrane is pressed with soil. Low-temperature refining: When the emergence of seedlings reaches 70%, care should be taken to prevent low-temperature freezing damage.
Rational fertilization of fertilizer and water management Because spring maize is planted early, the temperature is low, the soil nutrient conversion is slow, and the root absorption capacity is poor. It is easy to attract fertilizer by placing the fertilizer near the seed. When the leaves grow to 3~4 pieces, the seedlings are fertilized; from 5 leaves to jointing stage, the stalk fertilizer is applied; in the 8~9 leaf stage, the grain fertilizer is applied. At the same time, combined with pest control, the leaf surface is sprayed with trace element fertilizer such as green source fertilizer. Watering at the right time: the water should be kept at about 70% from the jointing stage; the water requirement period should be 70%~80% in the soil field after the booting stage; the water requirement from the tasseling to the milking stage should be large. Keep it moist.
Pest control Spring maize seedlings are mainly thrips, golden worms, crickets, crickets, etc. In the past few years, the most serious damage to spring maize in southwestern Shandong was the thrips. It bites the heart of the corn seedlings, causing damage to the growth point, causing wilting, rolling leaves, dwarfing, and weakening. In the seedling stage, the corn leaf is sprayed with the dimethoate in time. The earing stage is mainly armyworm, corn borer, stem rot, etc. It can be sprayed with 600 times of fast spirit and has special effects. At the same time, paired with carbendazim, it can prevent diseases caused by bacteria such as stem rot.
When harvested at the right time, the stalk turns yellow, the stalk leaves are yellow and white, and the grain hardens and reveals the inherent color of the variety, which is generally harvested when cooked.
1000Hz High Frequency LiDAR System
JRT High Frequency Range LiDAR Sensor is 2021 new product, that's a low-cost tof sensor but High frequency (up to 1000Hz). With 5cm high accuracy, the LiDAR Module can measure 80m.
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* Invisible laser design: the laser type is 905nm,Class I
* High Frequency: 1000hz/1khz
* Low power design
Chengdu JRT Main Ranging Modules: Industrial Laser Distance Sensor, Laser Distance Meter Module, Tof LiDAR Sensor.
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