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(1) Childbirth is not standardized:
One is that bed soil is not fully prepared and the quality is not up to standard. Some people rushed to use the ditch bypass or Daejeo topsoil as a bed before rushing to the valley. As a result, the beds were thin, the fertility was low, the thickness was uneven, and there were many grass seeds, which caused the weeds, impurities, and broken leaves of the seedbed to be affected. The normal growth and root development of the seedlings. Or bed soil before bed nitrogen fertilizer is too much, too late mixing, fertilizer and soil is not integrated, organic fertilizer is not decomposed, rapid decomposition of plastic film in the case of high-temperature fertilizer, resulting in bud fertilizer poisoning, resulting in rotten species burning buds.
Second, cover seed soil is too fine, too thick or too thick, too thin or uneven thickness, uneven thickness, resulting in topsoil compaction, bud valley anoxic, rot seed bud or seedbed water retention performance higher than seedlings, seedlings rough group does not Uniform, high and low, uniform and poor uniformity.
The third is that the age is too long. Due to the delay in the maturity of the previous crop, the difficulty in planting the soil in Datian, or failure in the operation of the rice transplanter, unskillful operation, and low operating efficiency, it was not possible to end transplanting within the planned time. As a result, the contradiction between light and air in Putian was intensified, and the height of seedlings and seedlings became poor, and the quality of the seedlings deteriorated. Severe Putian sheath blight, leaf rice, and pods spread, affecting the live green trees after machine insertion, and even causing dead seedlings.
The fourth is bad seeding buds. Irregular germination, inconsistent sprout growth, uneven seeding, and insufficient or uneven bed soil moisture. As a result, the growth of the seedlings is not neat, the seedlings bully the seedlings, and the seedlings of the seedlings are crowded to form a pinching seedling.
Fifth, seedbed management is not fine. Exposing too early or too many feet resulted in irregular seedlings or high seedling heights, bending wounds, and dead insects. After inoculating the cover film, the temperature of the soil in the film was more active than the soil insects such as locust infestation, biting, biting, or loosening the roots and causing seedling death. Machine seedling seedlings are subject to blight and cause death.
(2) Machine insertion quality is not high:
One is that the waterless or water layer in the field is too deep. There is no water layer in the field, which increases the resistance of the rice transplanter during operation, reduces the efficiency of the mechanical operation, and can not use the water layer to clean the claws, and the separation pin and the feeder belt are prone to muddy phenomenon, increasing the number of missing and inserting machines. The seedlings; surface water level is too large, not only affect the depth of transplanting, increase leeches, but also because of the rice transplanter operation when the water surface waves, hit the seedlings have been planted to increase the side of the line seedlings and floating rake.
The second is that the feet are bad and the mud is serious. The deeper sinking of the rice transplanter increases the operation and difficulty of the implements, causing the planted seedlings to fall seedlings, poor standing seedlings, and more drifting seedlings.
Third, Daejeon’s land was uneven. In addition to the difficulty in ensuring the quality of rice transplanting, it also increases the difficulty of chemical weed control, and there is no effect in blocking the weeds in water-free areas, and it is difficult to form wounds in places with deep water levels.
The fourth is that the cut board is irregular. Tolerance tolerance is tolerant to another person, affecting vertical delivery, one or more rows of missing plants, and too narrow or incomplete reeds will result in missing or small trees in the horizontal delivery.
The fifth is that Daejeon is indisputable. The wreckage floats on the surface and affects the quality of machine insertion.
(3) extensive field management:
One is the improper application of herbicides. Machine transplanting seedlings are transplanted seedlings, the resistance is poor, some people use conventional hand-planted seedling herbicides weeding, resulting in drug seedlings, and even dead seedlings.
The second is improper use of fertilizer. Basal fertilizer, with a lot of manure fertilizer and little or no panicle fertilizer. The result is that there are many invalid tillers, low rate of spikes, small panicles, and low seed setting rate; some only attach importance to nitrogenous fertilizers and ignore the use of phosphorus and potash fertilizers, leading to serious early stage disease and severe bacterial wilt.
The third is the improper control of the three generations of Sanhua. Due to the transplanting of transplanted seedlings and seedlings, the convulsions were delayed, which was in line with the hatching of the three generations of rice stem borers. Some medicines were inaccurate or the medicine was incorrect, and the amount of medicine was insufficient, resulting in more whitefish and affecting yield.
Problems to be Paid Attention to in Rice Mechanical Transplanting
The rice transplanting technology has the characteristics of labor saving, water saving, fertilizer saving, provincial rice field, provincial cost, increase production and income increase. According to the survey, the general field production increased by more than 5%, and good economic benefits were achieved. However, the efficiency of individual farmers is not good, and the potential for increasing production and income of the project technology has not been fully utilized. The reason is as follows:
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