At present, rapeseed in our county is entering the harvest season. It is important to understand the rapeseed maturing process, the influence of different harvest periods on yield and quality, and to grasp the appropriate harvesting standards and harvesting methods.
1. To understand the maturity of rapeseed
The ripening process of the whole pod of rapeseed is consistent with the sequence of its flower bud differentiation, that is, the branching after the main sequence. The sequence of ripening of the main inflorescences is mature in the lower part and then matures in the middle and upper parts. The fruit ripening process and sequence on a branch are also consistent with the main inflorescence.
Since rapeseed has the characteristics of first flowering, first ripening, later flowering, later maturation, and uneven ripeness of pods, it also brings difficulties to the harvest of rapeseed. Therefore, the scientific determination of the appropriate harvest time of rapeseed is the key to high yield.
2. Correctly judge the harvest period of rapeseed
Seed color changes can also be used as a measure of the appropriate harvest period. A total of 10 central pods were taken from the middle of the main shaft and the middle and upper parts of the main shaft. The color of the seeds was peeled off. If the brown grains and semi-brown half red grains were half, it was a suitable harvest period.
3, master the correct way to harvest
1 harvesting method.
Harvesting of rapeseed should be carried out in the morning with dew harvesting to prevent the main shaft and upper branches from cracking corners. The harvesting process strives to achieve “four light†(light cut, light release, light bundle, light transport), and strives to minimize losses at each stage. When rapeseed is harvested, it must be collected, tied, pulled, and piled up. It should not be piled in the field and aired to prevent cracking of corners.
2 stacking and maturity.
Since rape can be harvested at the ripening stage, in order to promote the ripening of partially incompletely matured pods, the harvested rapeseed should be piled and cooked in time. If direct drying is done in the field, the pod will quickly lose water and dry, nutrients in the stalks and keratin will no longer be transported to the grains, and pods will increase in size, reducing yield and quality. According to the survey, after eight mature rapeseeds were harvested, the direct drying was reduced by 4.9% to 6.3% compared with that of stacking, and the oil content was reduced by 1.3% to 2.1%.
The method of stacking is cylindrical, square, etc. No matter which type of cockroach shape is chosen, it should be selected in a place where the terrain is high and water is not accumulated. In order to avoid the accumulation of water under the armpits, bundles of rape or waste wood, etc., with bundles of pods should be placed under the armpits to facilitate drainage, moisture protection, and mildew resistance of the vegetables. In order to facilitate the transportation of nutrients in the stalks and pods of the rapeseed to the seeds, when stacking the rapeseed, the pods should be placed in the pods, and the stalks should be directed toward the pods to facilitate ripening.
3 threshing.
After 4 to 6 days of rapeseeds were stacked, the pods were decomposed by pectinase and the pod peeled. The rapeseeds had been detached from the pods. At this time, you can choose sunny weather, pay close attention to spreading the sun, rolling, threshing, Yang Jing, when the moisture dropped to 8% to 9% can be stored.
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