JPH0238164B2 - - Google Patents

Description

[Detailed description of the invention]

B. Purpose of the invention The present invention is directed to forming a seeding furrow in a plowed paddy field,
Seed rice is sown one grain at a time at appropriate intervals, and after the seeds germinate, the soil on the trench walls gradually collapses as the seeds elongate, and the natural covering soil prevents them from lacking oxygen and causing poor germination. The purpose is to cultivate strong rice that stands well and does not fall over. B. Structure of the Invention The present invention will be explained with reference to illustrative drawings. U-shaped or V-shaped seeding furrows 2 are formed with suitable size rows by a special machine in a paddy field in which seed rice 2 covered with soil 1 is placed... …
This method involves sowing one seed at a time between plants of appropriate size, and the soil on the walls of the seeding furrow gradually collapses naturally as the seed seeds elongate after germination to cover them with soil. C. Effects of the Invention Since the present invention is configured as described above, the seed rice 2 is coated with the soil 1, so the work is simple and requires low cost. Seeds are sown in U-shaped or V-shaped seeding grooves 3 formed between rows of appropriate size, and can be easily sown using a special machine. It is desirable to form the seeding furrow 3 after puddling, when the water has subsided after leaving the seedling for several days. Further, as a result of experiments, the size of the groove 3 is preferably about 3 cm in depth and about 4 cm at the top, and it is preferable that the V-shaped groove holds one seed grain and the U-shaped groove holds two seeds. In addition, since the rice seed 2 is covered with soil 1 (for example, 2 mm of soil is applied to a 1 cm long seed rice), it is weighted and submerged after watering, so there is no problem with poor germination. After water is supplied, the seed rice is not forcibly covered with soil, so sufficient oxygen in the water is supplied to the seed rice, and germination is stabilized. The rice seed 2 settles on the bottom surface of the seeding furrow 3 due to the weight of the coating soil 1, so the seedlings stand well after germination, and the seedlings do not move due to the weight of the coating soil 1, making it easier to sow. The seeding density is never as high as that of water seedlings, and the seeding density is always maintained at an appropriate level, and the drop in dissolved oxygen in the water is small, resulting in normal germination and rooting. At this time, since the coating soil 1 is extremely thin, the rice seeds 2 and water come into sufficient contact to cause germination and rooting.
Furthermore, since the condition of the seed rice sown in the U-shaped groove or V-shaped groove can be easily checked after the sowing operation, work errors and machine malfunctions can be immediately identified. Furthermore, since the process from sowing to budding can be visually confirmed, mental anxiety about whether budding will occur or not is alleviated. Also, once sown, it will germinate in 2-3 days, so if it is flooded at that point, the trench walls will gradually collapse and cover the seed rice with soil.
It is possible to cultivate strong rice without lodging by improving the seedling establishment. Next, as an example, a comparison table is shown between the direct sowing cultivation method in flooded soil, which has been attracting attention in recent years, and the cultivation method of the present invention.

【table】

【table】 [Brief explanation of drawings]

Figure 1 A and B show two examples of seeding furrows formed in paddy fields. 1; soil, 2; seed rice, 3; ditch.

Claims (1)

[Claims] 1 Form a U-shaped or V-shaped seeding furrow in paddy fields that have been plowed for generations, and the depth of this sowing furrow should be at least 3 cm and the top opening should be 4 cm.
cm or more, seed rice covered with soil is sown one grain at a time at appropriate intervals at the bottom of this seeding furrow,
A method for directly sowing rice seed cultivation in which the soil on the walls of the seeding furrow gradually collapses naturally as the seed rice grows after germination, and covers the seed rice with soil.