(2) The row spacing, the amount of broadcast, and the row spacing of the marker are determined according to the technical requirements for agricultural production. The number n of openers that can be installed can be calculated as follows:
n=L valid/b +1
L effective: opener mounting effective beam length b: line spacing If the calculated opener is singular, the middle opener is installed in the middle of the opener mounting frame; if it is even number, install it. The center of the rack is symmetrically mounted on both sides symmetrically.
When the transmission speed ratio is fixed, the seeding amount can be changed by changing the working length of the seeding sheave with the sowing amount adjustment handle. The greater the length of the groove wheel into the seed box, the larger the broadcast volume; otherwise, it is small. According to the requirements of agriculture and production, the actual seeding rate q can be calculated as follows:
q=Mill sowing volume (kg/acre) π seeder ground wheel diameter (m) Number of rotations of the ground wheel Line spacing (m) (1+ground wheel slip coefficient)/666.7 (kg)
The specific method is to support the seeder so that the seed box is horizontal, the ground wheel can rotate freely, the opener is dropped, and the seed amount adjustment handle is placed in a suitable position. Add - a fixed number of seeds, and include seedlings, and inoculate the inoculation bag under the seedlings. Then, at a speed similar to that of the formal work in the field, the wheels 20 and 30 are rotated evenly for 30 rounds. The amount of seeds in each inoculation bag is weighed and compared with the actual calculated seeding rate q (the actual calculation of the ground wheel Slip factor - generally taken 0. 05 & # 732; 0.1).
Marker length calculation. In order to make the row spacing of the adjoining two row spacings normal, no replays and missed broadcasts will occur, guiding the tractor to run correctly, and the length L of the marker (distance from the furthest row opener to the marking line). Tractor centerline alignment trace:
L=(B+b)/2
If the tractor is eccentrically driven, the right front wheel of the tractor is often used to align the prints so that the left and right print lengths are different:
L left (B+b)/2+A/2
L right (B+b)/2-A/2
B: broadcast amplitude b: line spacing A: center distance of the front wheel of the tractor (3) Before pilot planter operation, field trial broadcasting should be conducted first, and the amount of sowing, broadcast depth (achieved by adjusting the depth of opener ditching), and cover soil Check the quality, adjoining row spacing, etc., until all items are in compliance with the requirements.
First calculate the number of return seeding Q (kg):
Q=2 acres sowing volume (kg) broadcast amplitude (meters) sowing length (meters)/666.7
Then add - quantitative seeds in the seed box and scrape them, make a mark, add a round trip of the sowing seeds to the seed box and sowing. After the broadcast-a round trip, see if it is flush with the mark; if not, adjust the position of the adjusting handle, and then perform the trial broadcast until it meets the requirements.
(4) Checking the seeding quality Often, check the various seed metering devices using the groove working length template to see if there is any change. Randomly take more than 10 measuring points along the diagonal direction of the plot to check the sowing depth. The deviation should not exceed plus or minus 1 cm. Check the number of seeds actually planted per m length in the broadcast. m,m can be calculated as follows:
m = Mu sowing volume (kg/mu) Row spacing (m) 106/666. 7 thousand grains (g)
After the completion of the plot and the area of ​​the plot, check the area sown, the actual seeding rate and the mu planting rate, and adjust if the requirements are not met.
A selection of fresh Red Fuji Apples with a diameter of 80mm.
Reducing blood fat: the Japanese fruit tree Institute's human test showed that eating two apples a day, 3 weeks later, the level of triglycerides in the blood of the subjects decreased by 21%, and the level of triglycerides was the culprit of vascular sclerosis. When apple pectin enters the body, it binds to bile acids, absorbs excess cholesterol and triglycerides like a sponge, and then passes them out of the body. At the same time, apple decomposition of acetic acid is conducive to the catabolism of these two substances. In addition, Apple's vitamins, fructose, magnesium and so on can also reduce their content.
Cancer prevention: the Hirosaki University in Japan has confirmed that polyphenols in apple can inhibit the proliferation of cancer cells. And a study in Finland is more exciting: the flavones contained in apples are an efficient antioxidant, not only the best blood vessel cleaning agent, but also the killer of cancer. If people eat more apples, the risk of lung cancer can be reduced by 46%, and the chance of other cancers can be reduced by 20%. The latest research from the National Institutes of health of France also tells us that Proanthocyanidins from apples can prevent colon cancer.
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