JP2012024003A - Smoked chaff seedling raising mat for irrigated rice - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safe and hardly breakable seedling raising mat for irrigated rice, having an appropriate hardness, capable of being easily used, and having appropriate shape-keeping properties, air-permeability, water absorbability and water retaining properties.SOLUTION: A substance including smoked chaff as a main material to which abaca fiber is added is kneaded with water, and the kneaded substance is dehydrated and molded in a plate-shape to make the smoked chaff seedling raising mat for irrigated rice. A better smoked chaff seedling raising mat for irrigated rice can be obtained by kneading 80-90 wt.% of smoked chaff and 20-10 wt.% of abaca fiber. As smoked chaff is used, the seedling raising mat can be lightweight, can be easily used, and the water absorbability and water retaining properties can be improved. Further, fertilizers can be kept long in the mat, and the mat can be inexpensively obtained. In addition, the mat is harmless while having a soil improving effect and a root-rot preventing effect. On the other hand, as the abaca fiber is used in the mat, the fiber is relatively long and sufficient to carry smoked chaff. The mat has shape-keeping properties, though the mat does not hinder the scraping motion of a rice transplanter.

Description

  The present invention relates to a rice husk charcoal nursery mat for paddy rice that cultivates rice seedlings by sowing seed pods until an appropriate time for rice planting.

Rice seedlings for machine planting are cultivated by placing a soil in a rectangular shallow dish-shaped seedling box, sprinkling the seeds on the seedling box, keeping it warm and irrigating for the required period. However, there is a problem that it is difficult to obtain a high quality culture soil, it is relatively expensive, and it is heavy and has poor transportability.
Therefore, in place of such culture soil, for example, a nursery is proposed in which sugarcane fibers, rice husk charcoal, waste paper fibers and starch are kneaded, combined and evaporated to dryness (Patent Document 1).

JP 58-63333 A

A nursery using the conventional sugarcane fiber is relatively hard, weak against impact, and easily damaged, and is difficult to handle and has poor workability. Moreover, it will become too brittle if water is included, and the shape retention will be inferior. Use of rice husk charcoal makes it difficult to solidify and difficult to handle. When used paper fiber is used, ink remaining on the used paper may contaminate the soil. When starchy material is added, there is a problem that it easily rots.
Therefore, the invention according to this application is a safe rice husk rice charcoal seedling mat for rice that has moderate hardness, is not easily damaged, is easy to handle, and has moderate shape retention, breathability, water absorption and water retention. The purpose is to provide.

In order to solve the above-mentioned problems, in the invention according to this application, rice husk husk charcoal is mainly formed from rice husk husk charcoal, dehydrated and kneaded with water and formed into a plate shape. A nursery mat was constructed.
When the rice husk husk charcoal is kneaded at a ratio of 80 to 90% by weight and the abaca fiber at a ratio of 20 to 10% by weight, a better rice husk husk charcoal nursery mat for paddy rice can be obtained.

  According to the invention relating to this application, rice husk and charcoal are uniformly dispersed and supported between abaca fibers, have a shape retention property with an appropriate hardness, are not easily damaged, are easy to handle, and have an appropriate water retention property. A safe rice husk and charcoal nursery mat with good breathability, water absorption and water retention can be obtained.

  Into a kneading tank, 85% by weight of rice husk and charcoal is added in a ratio of 15% by weight, and water is added in an amount such that the total weight ratio is 0.6% to 1.0%. To do. Abaca fibers have a length of 3-12 mm and an average of about 6 mm.

  After kneading, the paper is made with a special paper machine, dehydrated, and formed into a plate shape with a thickness of 15 mm. The rice husk charcoal is pulverized and supported evenly distributed among the abaca fibers.

  A comparative test was conducted on fibers such as bacas, bamboo, firewood, red ash, eucalyptus, etc., but the amount of abaca fiber was the smallest and a mat carrying rice husk and charcoal could be formed.

  Abaca fiber is more expensive than rice husk charcoal and should be used as little as possible. However, the mixing ratio is less than 10% by weight, that is, when rice husk charcoal exceeds 90% by weight, it is vulnerable to impact and breaks. Since it is easy to handle, it is required to be handled carefully, so that workability is deteriorated.

  This seedling mat is formed according to the size of the seedling box for the rice planting machine. In use, the mat is placed in a seedling box, watered, sown on it, further covered with soil, then watered again to wait for germination.

  The advantages of using rice husk charcoal are lightweight and easy to handle, good water absorption and water retention, good fertilizer retention, low cost, soil improvement effect, no root rot, harmless, etc. Is a point.

  On the other hand, the advantage of using an abaca fiber is that the fiber is relatively long, so that it is sufficient to carry rice husk and charcoal and has shape retention, but does not interfere with the scraping operation by the rice transplanter.

Claims (2)

  Rice husk husk charcoal nursery mats made from rice husk husk charcoal as a main material, dehydrated and kneaded with water after adding abaca fiber, and formed into a plate shape.   The rice husk husk charcoal nursery mat for paddy rice according to claim 1, wherein the husk husk charcoal is 80 to 90 wt% and abaca fiber is 20 to 10 wt%.