Mixing Feed Additives,Shrimp Feed Additives,Cattle Feed Mixer Meal,Feed Additives Supplement CANGZHOU HUAYOU IMPORT & EXPORT TRADE CO., LTD. , https://www.huayoutrade.com
"Double Low" Rape Mechanization Production Operation Technology
The 75th Farmer Division is located in the mountainous area of ​​Zhaosu, which is located at an altitude of 1700 to 1800m. The annual average temperature is only 2.3°C, and the frost-free period is only 85 days. It depends on science and technology and mechanization to implement a pattern cultivation technique, making the planting of 3753hm2 “double low†early maturity. Spring rape of the cabbage type has an average yield of 2,716 kg/hm2 and a maximum yield of 3,900 kg/hm2. The technical requirements for planting "double low" rapeseed mechanization production operations are now introduced. 1 The cultivated land rape is a "cross" flower rooted crop, the main root can generally be 30cm ~ 50cm, a good soil living environment is to ensure the development of high yield rape base. In autumn, Dongfanghong-1002/802 tractor traction elevated five-way plow equipped with auxiliary plough, combiner, full-layer fertilizer applicator, ploughing ground, flat soil and full-layer fertilization compound Joint operations ensure that the plough depth is more than 25cm, so that the surface is smooth, there is no residue, the soil is loose, and there is no leakage of ploughing. At the end of March or early April, when the snow melts, the surface is thawed 4~5cm, and the ground temperature is stable at 1°C~2°C, you can use the tractor traction and the joint preparation machine to work over the overturned land slope in the fall. There is no joint preparation machine. Can use PY-3.4 light disc harrow with hanging tweezers or ring large roller to carry out diagonal operation 1 or 2 times, can also achieve the effect of cultivated land reclamation suppression drought. 2 In the case of lack of dedicated seeder for rapeseed sowing, our group used tractors to tow two 2BF-24 seed drills with modified middle-layer fertilization for tandem sowing. The front-end planter was used for middle-level fertilization, flat land and small rakes. Hiccup operation, fertilization depth of 8 ~ 10cm. The back-planter conducts sowing and applying fertilizer, so that the base fertilizer, seed fertilizer, and seed are sowed in three layers in sequence in the soil. The sowing rate of “double low†rapeseed is 4.5-6kg/hm2 and sowing depth is 2～3cm. The technical requirements for semi-precision seeding are achieved, and the number of field preserved seedlings reaches 750,000-900,000/hm2. By limiting the position of the opener of the sowing machine with a limiter, wide and narrow row sowing can be achieved, wide line 30-40cm, narrow line 10-15cm, width and narrow sowing, can increase the efficiency of mechanical operation and promote crop growth. 3 The speed of the mechanized medium tillage tube cultivator is generally controlled at 4 to 5 km/h, and 10 to 15 cm nursery belts are left according to the seedling conditions. The weeds wound on the cultivator blade are removed at any time during the operation to prevent grass and dragging. . The cultivator work is done several times from shallow to deep. In the "double low" rape field weeds grow wild to 2-4 leaf stage, wild rapeseed and other broad-leaved weeds grow to the 3-leaf stage, using wheel tractors to pull or hang large sprayer chemicals In addition to the area. In addition to mechanization, it is required to operate in the morning and evening without wind, and the speed of the tractor should be controlled at 68km/h. To prevent uneven spraying of the liquid and leakage or re-ejection, the proper injection pressure and nozzle spray angle should be selected according to the dose. Do a good job of identification. For spraying herbicides, the spraying herbicides in the stems and leaves shall be sprayed at a pressure of 2 to 3 kg/cm2. The sprayer height may be selected from 40 to 60 cm depending on the type of nozzle and the angle of the sprayer, and the maximum height is not more than 80 cm. 4 Mechanical harvesting "double low" rapeseed plants are strong, tall, with many branches. The maturity of pods on the upper and lower branches is inconsistent and the branches are interlaced, which is a difficult point for mechanical harvesting operations. Early harvest, barley is not easy to remove the net, the grain moisture content is high, poor quality, not easy storage and transportation; too late, fried rape, grain shedding, serious losses. Therefore, it is required to mature a piece and harvest one piece. For lands with high maturity, harvesting should be conducted in the morning and evening to reduce losses. The operation is usually carried out by using a combine harvester, which has high work efficiency and low operating cost. However, the harvesting loss rate is large, and it is generally measured at 15% to 20%. The windrower can also be used to harvest in stages. Although the harvest period is long and the cost of machinery operation is high, the quality of rapeseed can be improved, the moisture content can be reduced, the yield can be increased, and the loss rate can be reduced. Therefore, suitable harvesting machinery should be selected according to local conditions. Harvest the “double low†rapeseed with a combine harvester, adjust the rotation speed of the reel, the rotation speed of the drum, the gap between the concave plate and the air volume, reduce the number of springs and lengthen the length of the sieve by 25 cm to reduce losses. In the case of severe lodging plots, the harvesting method of sorghum seedlings can effectively reduce the loss of harvest due to the winding of rapeseed branches.