JP2014159362A - Blended fertilizer composition for paddy rice, and cultivation method of paddy rice - Google Patents
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本発明は水稲用配合肥料組成物およびそれを用いる水稲の栽培方法に関する。 The present invention relates to a mixed fertilizer composition for paddy rice and a method for cultivating paddy rice using the same.
従来、肥料成分として主に窒素の溶出を正確に調整できる被覆肥料の開発により可能となった全量基肥施肥法が知られている（例えば、非特許文献１参照。）。水稲の全量基肥施肥法は、中間追肥、穂肥などを省略し、１回の施肥で生育期間の全肥料を賄う技術であり、施肥作業の省力化を目的として用いられている。かかる全量基肥施肥法において使用される肥料として、肥効特性の異なる被覆肥料および／または非被覆肥料を水稲の時期別必要養分量に合致するように配合調整した水稲用肥料が知られている（例えば、特許文献１参照。）。また、カリ肥料とアルカリ土類金属化合物とを含有する被覆肥料も知られている（例えば、特許文献２参照。）。 Conventionally, there has been known a whole-basis fertilization method that has been made possible by the development of a coated fertilizer capable of accurately adjusting the elution of nitrogen mainly as a fertilizer component (see, for example, Non-Patent Document 1). The whole-basis fertilization method for paddy rice is a technique that omits intermediate topdressing, ear fertilization, etc., and covers all fertilizers during the growing period with a single fertilization, and is used for the purpose of labor saving in fertilization work. As a fertilizer used in such a total amount-based fertilizer application method, a fertilizer for paddy rice in which a coated fertilizer and / or an uncoated fertilizer having different fertilization characteristics is blended and adjusted so as to match the required nutrient amount according to the season of the paddy rice is known ( For example, see Patent Document 1.) Moreover, the coating fertilizer containing a potash fertilizer and an alkaline-earth metal compound is also known (for example, refer patent document 2).
水稲の全量基肥施肥法においては、目標収量水準を設定し、その目標を達成するために肥料および施肥量の最適化を行うが、基肥と追肥とを行う分施体系と比較して水稲の生育および収量が劣る場合があり、そのような場合には追肥を行う必要があった。このような状況下、肥料成分、特に、窒素およびカリについて、水稲の養分吸収特性および生育の推移により適した肥料の配合設計が求められていた。
本発明は、肥料成分の配合が水稲用に設計された新しい配合肥料組成物を提供することを課題とする。
In the whole-basis fertilization method for paddy rice, the target yield level is set and the fertilizer and fertilizer amount are optimized to achieve the target. In some cases, the yield was inferior. In such a case, it was necessary to add fertilizer. Under such circumstances, fertilizer components, particularly nitrogen and potash, have been required to be formulated with fertilizers that are more suitable for the nutrient absorption characteristics and growth of rice.
An object of the present invention is to provide a new blended fertilizer composition in which blending of fertilizer components is designed for paddy rice.
本発明者らは、肥料成分の配合が水稲用に設計された新しい配合肥料組成物を見出すべく種々検討した結果、主要成分として、窒素およびカリを含有する水稲用配合肥料組成物であって、水稲用配合肥料組成物１００重量部に対し窒素を３０〜４２重量部と、窒素１００重量部に対しカリを５〜３５重量部とを含有し、且つ全窒素の２０〜９０重量％の窒素および全カリの４０〜９０重量％のカリを夫々、被覆粒状肥料として含有することを特徴とする水稲用配合肥料組成物（以下、本発明組成物と記す。）を用いることにより、水稲の収量を増加させることが可能であることを見出した。
すなわち、本発明は以下の通りである。
［１］ 主要成分として、窒素およびカリを含有する水稲用配合肥料組成物であって、水稲用配合肥料組成物１００重量部に対し窒素を３０〜４２重量部と、窒素１００重量部に対しカリを５〜３５重量部とを含有し、且つ全窒素の２０〜９０重量％の窒素および全カリの４０〜９０重量％のカリを夫々、被覆粒状肥料として含有することを特徴とする水稲用配合肥料組成物。
［２］ 被覆粒状肥料に含有される窒素源が尿素である［１］に記載の水稲用配合肥料組成物。
［３］ ［１］または［２］に記載の水稲用配合肥料組成物を全量基肥施肥法により施用する工程を有する水稲の栽培方法。
As a result of various studies to find a new blended fertilizer composition in which the blending of fertilizer components is designed for paddy rice, the present inventors are a blended fertilizer composition for paddy rice containing nitrogen and potash as main components, 30 to 42 parts by weight of nitrogen with respect to 100 parts by weight of the fertilizer composition for paddy rice, 5 to 35 parts by weight of potassium with respect to 100 parts by weight of nitrogen, and 20 to 90% by weight of nitrogen and By using a mixed fertilizer composition for paddy rice (hereinafter referred to as the present invention composition) characterized by containing 40 to 90% by weight of potash as a coated granular fertilizer, the yield of paddy rice can be reduced. We found that it is possible to increase.
That is, the present invention is as follows.
[1] A compound fertilizer composition for paddy rice containing nitrogen and potash as main components, wherein 30 to 42 parts by weight of nitrogen and 100 parts by weight of nitrogen with respect to 100 parts by weight of paddy rice compound fertilizer composition And 35 to 35 parts by weight of nitrogen, and 20 to 90% by weight of nitrogen and 40 to 90% by weight of potash, respectively, as coated granular fertilizers. Fertilizer composition.
[2] The fertilizer composition for paddy rice according to [1], wherein the nitrogen source contained in the coated granular fertilizer is urea.
[3] A method for cultivating paddy rice comprising a step of applying the mixed fertilizer composition for paddy rice according to [1] or [2] by a whole-basis fertilization method.
本発明によれば、水稲の栽培において、全量基肥施肥法により、水稲の収量が増加する。 According to the present invention, in the cultivation of paddy rice, the yield of paddy rice is increased by the whole-basis fertilization method.
本発明において水稲とは、水田で栽培されるイネのことをいい、当該水稲の栽培において、本発明組成物が用いられる。本発明において、水稲の栽培は、通常、育苗したイネの苗を湛水された田（水田）に移植する移植栽培、または、イネの種籾を直接田に播く直播栽培により行われる。また、直播栽培には、播種時は畑状態で、イネの生育に伴い、その後湛水する乾田直播栽培も含まれる。 In the present invention, paddy rice means rice cultivated in paddy fields, and the composition of the present invention is used in the cultivation of the paddy rice. In the present invention, paddy rice is usually cultivated by transplanting or transplanting rice seedlings that have been bred to a padded field (paddy field) or by direct seeding and cultivating rice seeds directly on the paddy field. The direct sowing cultivation also includes dry rice direct sowing cultivation in which the seedling is in the field at the time of sowing and the rice is then submerged as the rice grows.
本発明組成物は、主要成分として窒素（Ｎ）、カリ（Ｋ2Ｏ）を含有する配合肥料組成物であり、より具体的には、窒素およびカリから選ばれる１種以上を主要成分として含有する粒状肥料を１種以上と、肥料成分として窒素およびカリの溶出が制御された被覆粒状肥料を１種以上とを含有する。窒素源としては、例えば尿素、カリ源としては、例えば塩化カリウムが夫々挙げられる。また、前記窒素およびカリの溶出が制御された被覆粒状肥料は、窒素とカリとの両方を含有する被覆粒状肥料であっても、窒素を含有する被覆粒状肥料とカリを含有する被覆粒状肥料との２種であってもよい。被覆粒状肥料に含有される窒素源としては尿素が好ましい。
本発明組成物は、本発明組成物１００重量部に対し窒素を３０〜４２重量部と、窒素１００重量部に対しカリを５〜３５重量部とを含有し、且つ全窒素の２０〜９０重量％の窒素および全カリの４０〜９０重量％のカリを夫々、被覆粒状肥料として含有することを特徴とする。全窒素の２０〜９０重量％の窒素を被覆粒状肥料として含有するとは、本発明組成物に含有される全窒素に対する被覆粒状肥料に含有される窒素の割合（以下、被覆窒素率と記す。）が２０〜９０重量％であることを意味し、全カリの４０〜９０重量％のカリを被覆粒状肥料として含有するとは、本発明組成物に含有される全カリに対する被覆粒状肥料に含有されるカリの割合（以下、被覆カリ率と記す。）が４０〜９０重量％であることを意味する。本発明において、窒素の量はＮ（窒素原子）換算の重量であり、カリの量はＫ2Ｏ（酸化カリウム）換算の重量である。
The composition of the present invention is a blended fertilizer composition containing nitrogen (N) and potash (K 2 O) as main components, and more specifically, contains one or more selected from nitrogen and potash as main components. One or more types of granular fertilizers to be used and one or more types of coated granular fertilizers with controlled elution of nitrogen and potassium as fertilizer components are contained. Examples of the nitrogen source include urea, and examples of the potassium source include potassium chloride. Moreover, even if the coated granular fertilizer in which the elution of nitrogen and potash is controlled is a coated granular fertilizer containing both nitrogen and potash, the coated granular fertilizer containing nitrogen and the coated granular fertilizer containing potash These may be two types. Urea is preferable as the nitrogen source contained in the coated granular fertilizer.
The present composition contains 30 to 42 parts by weight of nitrogen with respect to 100 parts by weight of the present composition, 5 to 35 parts by weight of potassium with respect to 100 parts by weight of nitrogen, and 20 to 90 parts by weight of total nitrogen. % Nitrogen and 40 to 90% by weight of the total potash, respectively, as coated granular fertilizer. Containing 20 to 90% by weight of nitrogen as the coated granular fertilizer means that the ratio of nitrogen contained in the coated granular fertilizer to the total nitrogen contained in the composition of the present invention (hereinafter referred to as the coated nitrogen ratio). Is contained in the coated granular fertilizer with respect to the total potash contained in the composition of the present invention. This means that the potash ratio (hereinafter referred to as the covering potash ratio) is 40 to 90% by weight. In the present invention, the amount of nitrogen is the weight in terms of N (nitrogen atom), and the amount of potassium is the weight in terms of K 2 O (potassium oxide).
本発明組成物は、本発明組成物に含有される窒素１００重量部に対しカリを通常５〜３５重量部、好ましくは１０〜３０重量部含有する。 The composition of the present invention usually contains 5 to 35 parts by weight, preferably 10 to 30 parts by weight of potassium with respect to 100 parts by weight of nitrogen contained in the composition of the present invention.
本発明において被覆粒状肥料とは、粒状肥料の表面をポリオレフィン等の熱可塑性樹脂、ポリウレタン等の熱硬化性樹脂、パラフィン類、油脂類、硫黄等の被覆資材で被覆することによって肥料成分の溶出を制御した肥料である。被覆される粒状肥料の形状としては、球形で均等性のあるものが好ましく、その粒径は被覆工程での製造上の好適さの点から通常１〜５ｍｍであり、かつ全粒子に対する１〜４ｍｍの粒子の含有割合が９５重量％以上である。本発明において粒径とは、粒子の最大直径、即ち、粒状肥料の投影図における輪郭線上の任意の２点をその間の長さが最大になるように選んだ時の長さである。
被覆資材及び被覆方法としては、例えば、特開昭５４−９７２６０号公報、特開平９−２０２６８３号公報、特開平９−２０８３５号公報、特開平９−２６３４７４号公報に記載される被覆資材及び被覆方法が用いられる。被覆粒状肥料に対する被覆資材の割合、すなわち被覆率は、約２〜３０重量％の範囲である。被覆資材には、必要に応じてさらに無機質粉末、耐候性改良剤、着色剤、結合剤等を加えることもできる。
本発明組成物に含有される被覆粒状肥料は、被覆により窒素および／またはカリの溶出が制御されているが、その溶出の程度は、肥料成分が窒素の場合、２５℃水中に被覆粒状肥料を静置した条件において、当該被覆粒状肥料に含有される全窒素の８０％の窒素が溶出するのに要する期間が、通常約５日〜２００日であり、好ましくは約１０日〜１５０日である。また、肥料成分がカリの場合、２５℃水中に被覆粒状肥料を静置した条件において、当該被覆粒状肥料に含有される全カリの８０％のカリが溶出するのに要する期間が、通常約５日〜２００日であり、好ましくは約１０日〜１５０日であり、さらに好ましくは約５０〜１２０日である。
In the present invention, the coated granular fertilizer means that the surface of the granular fertilizer is coated with a coating material such as a thermoplastic resin such as polyolefin, a thermosetting resin such as polyurethane, paraffins, oils and fats, sulfur, etc. It is a controlled fertilizer. The shape of the granular fertilizer to be coated is preferably spherical and uniform, and its particle size is usually 1 to 5 mm from the viewpoint of production suitability in the coating process, and 1 to 4 mm for all particles. The content ratio of the particles is 95% by weight or more. In the present invention, the particle diameter is the maximum diameter of the particles, that is, the length when any two points on the contour line in the projected view of the granular fertilizer are selected so that the length between them is maximized.
Examples of the covering material and the covering method include the covering material and the covering described in JP-A-54-97260, JP-A-9-202683, JP-A-9-20835, and JP-A-9-263474. The method is used. The ratio of the covering material to the coated granular fertilizer, that is, the covering ratio, is in the range of about 2 to 30% by weight. An inorganic powder, a weather resistance improver, a colorant, a binder and the like can be further added to the coating material as necessary.
In the coated granular fertilizer contained in the composition of the present invention, the elution of nitrogen and / or potash is controlled by the coating, but when the fertilizer component is nitrogen, the degree of elution is determined by applying the coated granular fertilizer in 25 ° C water. In a stationary condition, a period required for elution of 80% of the total nitrogen contained in the coated granular fertilizer is usually about 5 to 200 days, preferably about 10 to 150 days. . Moreover, when the fertilizer component is potash, the period required for 80% potash to elute out of all potash contained in the coated granular fertilizer is usually about 5 on the condition that the coated granular fertilizer is allowed to stand in 25 ° C. water. Day to 200 days, preferably about 10 to 150 days, more preferably about 50 to 120 days.
２５℃水中における肥料成分の溶出率は、２５℃水中に被覆粒状肥料を静置し、経時的に水中に溶出した肥料成分を定量分析することにより測定することができる。肥料成分の定量分析は、例えば、農林水産省環境技術研究所より提案されている方法（「詳解肥料分析法」越野正義編著、１９８８年参照）により行なうことができる。 The elution rate of fertilizer components in 25 ° C. water can be measured by leaving the coated granular fertilizer in 25 ° C. water and quantitatively analyzing the fertilizer components eluted in water over time. Quantitative analysis of fertilizer components can be performed, for example, by a method proposed by the Ministry of Agriculture, Forestry and Fisheries, Environmental Technology Research Institute (“Detailed Fertilizer Analysis Method” edited by Masayoshi Koshino, 1988).
本発明組成物の被覆窒素率は、通常２０〜９０重量％、好ましくは３０〜９０重量％であり、被覆カリ率は、通常４０〜９０重量％である。 The covering nitrogen rate of the composition of the present invention is usually 20 to 90% by weight, preferably 30 to 90% by weight, and the covering potash rate is usually 40 to 90% by weight.
本発明組成物は、さらに、リン酸（Ｐ2Ｏ5）を含有することが好ましい。本発明組成物がリン酸を含有する場合、その含有量は、本発明組成物に含有される窒素１００重量部に対して、通常５〜３５重量部、好ましくは５〜１０重量部である。本発明において、リン酸の量はＰ2Ｏ5（五酸化二リン）換算の重量である。 The composition of the present invention preferably further contains phosphoric acid (P 2 O 5 ). When this invention composition contains phosphoric acid, the content is 5-35 weight part normally with respect to 100 weight part of nitrogen contained in this invention composition, Preferably it is 5-10 weight part. In the present invention, the amount of phosphoric acid is a weight in terms of P 2 O 5 (diphosphorus pentoxide).
本発明組成物は、殊に、水稲の全量基肥施肥法において使用される肥料として好適であり、施用形態としては、本田での土壌処理全層混和（全層施肥）、表層施肥又は側条施肥が好ましい。本田に基肥を施用する時期は、通常、水田に湛水する前の耕起時から、水稲の苗を本田に移植するまで又は水稲の種籾を本田に播くまでである。ここで、水稲の苗とは約６葉期までの水稲の幼植物体を意味する。施肥量は、地域の施肥基準量を参考にして、窒素として、通常２〜２０ｋｇ／１０ａ、好ましくは４〜１２ｋｇ／１０aの範囲となるように設定する。 The composition of the present invention is particularly suitable as a fertilizer to be used in the whole-basis fertilization method for paddy rice, and as an application form, all layers of soil treatment in the Honda (full-layer fertilization), surface layer fertilization, or side strip fertilization Is preferred. The time of applying the basic fertilizer to Honda is usually from tilling before inundation to paddy field until transplanting rice seedlings to Honda or sowing seed rice seedling to Honda. Here, paddy rice seedlings mean paddy rice seedlings up to about the 6th leaf stage. The amount of fertilization is set so that it is usually in the range of 2 to 20 kg / 10a, preferably 4 to 12 kg / 10a as nitrogen with reference to the local fertilization reference amount.
上記のように本発明組成物を水稲の栽培において施用し、通常の栽培条件に保つことにより、水稲の収量が増加する。また、水稲の収量の指標として用いられる籾／藁比が高くなる。本発明において、籾／藁比とは、成熟期における籾重の藁重に対する比を指す。籾重は、イネの籾の部分の重量であり、また、藁重は、イネの藁の部分の重量である。なお、籾／藁比を高くすることにより、収量を増加させることが可能となることが一般に知られており、イネの場合、籾／藁比が高いほど、光合成産物の玄米への転流効率が高いことを意味する。 As described above, the yield of paddy rice is increased by applying the composition of the present invention in the cultivation of paddy rice and maintaining normal cultivation conditions. In addition, the ratio of straw / rice used as an index for the yield of paddy rice increases. In the present invention, the cocoon / cocoon ratio refers to the ratio of cocoon weight to maturity in the mature period. The weight is the weight of the rice straw portion, and the weight is the weight of the rice straw portion. In addition, it is generally known that it is possible to increase the yield by increasing the cocoon / rice ratio. In the case of rice, the higher the cocoon / rice ratio, the more efficiently the photosynthetic product is transferred to brown rice. Means high.
以下、本発明をさらに詳しく説明する。 Hereinafter, the present invention will be described in more detail.
まず、以下に肥料の配合例及び比較配合例を示す。なお、配合例及び比較配合例に記載された肥料の名称は表１に記載の通りである。表中、肥料の名称に＊を付された肥料は、肥料成分の溶出が制御された被覆粒状肥料であることを意味する。
また、本実施例において使用した被覆化成１３８K号（１００日タイプ）は、２５℃水中に被覆粒状肥料を静置した条件において、当該被覆粒状肥料に含有される全カリの８０％のカリが溶出するのに要する期間が１００日に設定されており、当該期間が通常８０〜１２０日である被覆粒状肥料である。
First, fertilizer blending examples and comparative blending examples are shown below. In addition, the names of the fertilizers described in the formulation examples and comparative formulation examples are as shown in Table 1. In the table, a fertilizer with * in the fertilizer name means a coated granular fertilizer in which elution of the fertilizer component is controlled.
Also, the coated chemical 138K (100-day type) used in this example eluted 80% of the total potash contained in the coated granular fertilizer under the condition that the coated granular fertilizer was allowed to stand in 25 ° C. water. The period required for this is set to 100 days, and the period is normally 80 to 120 days.
配合例
被覆尿素４３−２号、被覆尿素４２−１号および被覆尿素４１−２号を表２に記載の重量割合となるように配合し、被覆尿素配合物１〜７を夫々得た。
被覆尿素配合物１〜７、１７．５−４５．５りん安４号、住友化成新１５号、住友すずらん印化成６００号、４６．０尿素、化成１．２−４．５−５２、被覆化成１３８Ｋ号および被覆硫酸苦土２３−２号を表３に記載の重量割合となるように配合し、窒素、リン酸およびカリを含有し、被覆窒素率および被覆カリ率が異なる本発明配合肥料組成物１〜７を夫々得た。
なお、表２に記載の８０％溶出期間とは、２５℃水中に被覆尿素配合物を静置した条件において、当該被覆尿素配合物に含有される全窒素の８０％の窒素が溶出するのに要する期間を示す。
Formulation Example Coated urea 43-2, coated urea 42-1 and coated urea 41-2 were blended so as to have the weight ratios shown in Table 2 to obtain coated urea blends 1 to 7, respectively.
Coated urea compounds 1-7, 17.5-45.5 Rin'an No. 4, Sumitomo Kasei Shin No. 15, Sumitomo Suzuran Seal Chemical No. 600, 46.0 Urea, Kasei 1.2-4.5-52, Coated Compound 138K and coated sulfuric acid dough No. 23-2 are blended so as to have the weight ratios shown in Table 3, containing nitrogen, phosphoric acid and potash, and the mixed fertilizer of the present invention having different covering nitrogen ratio and covering potash ratio Compositions 1 to 7 were obtained, respectively.
The 80% elution period shown in Table 2 means that 80% of the total nitrogen contained in the coated urea composition elutes under the condition that the coated urea composition is allowed to stand in 25 ° C. water. Indicates the time required.
比較配合例
被覆尿素４３−２号、被覆尿素４２−１号および被覆尿素４１−２号を表４に記載の重量割合となるように配合し、被覆尿素配合物８〜１２を夫々得た。
被覆尿素配合物８〜１２、１７．５−４５．５りん安４号、住友化成新１５号、４５重過りん酸石灰、４６．０尿素、化成１．２−４．５−５２、被覆化成１３８Ｋ号および被覆硫酸苦土２３−２号を表５に記載の重量割合となるように配合し、窒素、リン酸およびカリを含有し、被覆窒素率および被覆カリ率が異なる比較配合肥料組成物１〜５を夫々得た。
なお、表４に記載の８０％溶出期間とは、２５℃水中に被覆尿素配合物を静置した条件において、当該被覆尿素配合物に含有される全窒素の８０％の窒素が溶出するのに要する期間を示す。
Comparative Blending Example Coated urea 43-2, coated urea 42-1 and coated urea 41-2 were blended so as to have the weight ratios shown in Table 4 to obtain coated urea blends 8 to 12, respectively.
Coated urea compound 8-12, 17.5-45.5 Phosphorus No. 4, Sumitomo Kasei Shin No. 15, 45-fold superphosphate lime, 46.0 urea, Kasei 1.2-4.5-52, Coated Compound 138K and coated sulfuric acid dough No. 23-2 blended so as to have the weight ratios shown in Table 5, containing nitrogen, phosphoric acid and potash, and a comparative blended fertilizer composition with different covering nitrogen ratio and covering potash ratio Items 1 to 5 were obtained.
The 80% elution period shown in Table 4 means that 80% of the total nitrogen contained in the coated urea composition elutes under the condition that the coated urea composition is allowed to stand in 25 ° C. water. Indicates the time required.
次に、水稲の栽培の試験例を示す。 Next, the example of a rice cultivation test is shown.
試験例１
１／５０００ａポットに土壌を３ｋｇ充填し、窒素として１２ｋｇ／１０ａ相当となるよう本発明配合肥料組成物１を混和した。入水して土壌を攪拌して代かきを行い、ガラス温室内で２７日間育苗した水稲苗（品種：北陸１９３号）をポット当たり３本移植した。活着後はポットの上端まで湛水して、ガラス温室内で管理した。移植１５０日後に地際から植物体を刈り取り、脱穀して籾の重量を測定した。
また、本発明配合肥料組成物２および３の夫々を使用した場合についても、同様の操作を行った。
結果を表６に示す。
Test example 1
The 1 / 5000a pot was filled with 3 kg of soil, and the fertilizer composition 1 of the present invention was mixed so as to be equivalent to 12 kg / 10a as nitrogen. Water was added, the soil was agitated and replaced, and three rice seedlings (cultivar: Hokuriku 193) grown for 27 days in a glass greenhouse were transplanted per pot. After soaking, it was flooded to the top of the pot and managed in a glass greenhouse. 150 days after transplanting, the plants were cut from the ground, threshed, and the weight of the straw was measured.
Moreover, the same operation was performed also when each of this invention mixing fertilizer composition 2 and 3 was used.
The results are shown in Table 6.
試験例２
１／５０００ａポットに土壌を３ｋｇ充填し、窒素として６ｋｇ／１０ａ相当となるよう本発明配合肥料組成物１を混和した。湛水深が０ｃｍとなるよう入水して攪拌して土壌表面が落ち着いた後、鉄コーティングした水稲種子（品種：山田錦）を土壌表面にポット当たり６粒播種した。出芽後は植物の伸長に合わせて徐々にポットの上端まで湛水して、ガラス温室内で管理した。播種１５３日後に地際から植物体を刈り取り、脱穀して籾の重量を測定した。
また、本発明配合肥料組成物３および５の夫々を使用した場合についても、同様の操作を行った。
結果を表７に示す。
Test example 2
The 1 / 5000a pot was filled with 3 kg of soil, and the fertilizer composition 1 of the present invention was mixed so as to correspond to 6 kg / 10a as nitrogen. After the water depth was set to 0 cm and stirred to settle the soil surface, iron-coated paddy rice seeds (variety: Yamada Nishiki) were sown on the soil surface per pot. After emergence, the plants were gradually flooded to the top of the pot according to the growth of the plants and managed in a glass greenhouse. 153 days after sowing, the plant bodies were cut from the ground, threshed, and the weight of the straw was measured.
Moreover, the same operation was performed also when each of this invention mixing fertilizer composition 3 and 5 was used.
The results are shown in Table 7.
試験例３
１／５０００ａポットに土壌を３ｋｇ充填し、窒素として６ｋｇ／１０ａ相当となるよう本発明配合肥料組成物６を混和した。入水して土壌を攪拌して代かきを行い、ガラス温室内で４３日間育苗した水稲苗（品種：紅吉兆）をポット当たり３本移植した。活着後はポットの上端まで湛水して、ガラス温室内で管理した。移植１５３日後に地際から植物体を刈り取り、脱穀して籾の重量を測定した。
結果を表８に示す。
Test example 3
The 1 / 5000a pot was filled with 3 kg of soil, and the fertilizer composition 6 of the present invention was mixed so as to correspond to 6 kg / 10a as nitrogen. Water was added, the soil was agitated and replaced, and three rice seedlings (cultivar: Benjikichi) grown in a glass greenhouse for 43 days were transplanted per pot. After soaking, it was flooded to the top of the pot and managed in a glass greenhouse. 153 days after transplanting, the plants were cut from the ground, threshed, and the weight of the straw was measured.
The results are shown in Table 8.
試験例４
１／５０００ａポットに土壌を３ｋｇ充填し、窒素として６ｋｇ／１０ａ相当となるよう本発明配合肥料組成物３を混和した。入水して土壌を攪拌して代かきを行い、ガラス温室内で４２日間育苗した水稲苗（品種：コシヒカリ）をポット当たり３本移植した。活着後はポットの上端まで湛水して、ガラス温室内で管理した。移植１３２日後に地際から植物体を刈り取り、脱穀して籾の重量を測定した。
また、本発明配合肥料組成物６および７の夫々を使用した場合についても、同様の操作を行った。
結果を表９に示す。
Test example 4
The 1 / 5000a pot was filled with 3 kg of soil, and the fertilizer composition 3 of the present invention was mixed so as to correspond to 6 kg / 10a as nitrogen. Water was added, the soil was agitated and replaced, and three rice seedlings (cultivar: Koshihikari) grown for 42 days in a glass greenhouse were transplanted per pot. After soaking, it was flooded to the top of the pot and managed in a glass greenhouse. 132 days after transplanting, the plants were cut from the ground, threshed, and the weight of the straw was measured.
Moreover, the same operation was performed also when each of this invention mixing fertilizer composition 6 and 7 was used.
The results are shown in Table 9.
試験例５
兵庫県加西市内の水田圃場に試験区画を設け、窒素として６ｋｇ／１０ａ相当となるよう本発明配合肥料組成物２を全層混和した。温室内で３５日間育苗した水稲苗（品種：コシヒカリ）を乗用田植機を用いて坪当たり６０株移植した。移植１１２日後に区画内の連続１０株の地上部を刈り取り、籾と藁に分けたのち、籾の重量を測定した。
また、本発明配合肥料組成物３を使用した場合についても、同様の操作を行った。
結果を表１０に示す。
Test Example 5
A test section was provided in a paddy field in Kasai City, Hyogo Prefecture, and the entire composition of the fertilizer composition 2 of the present invention was mixed so as to be equivalent to 6 kg / 10a as nitrogen. Rice seedlings (cultivar: Koshihikari) grown in a greenhouse for 35 days were transplanted 60 strains per tsubo using a riding rice transplanter. 112 days after transplantation, the above-ground part of 10 consecutive strains in the compartment was cut and divided into cocoons and cocoons, and the weight of the cocoons was measured.
Moreover, the same operation was performed also about the case where this invention mixing fertilizer composition 3 is used.
The results are shown in Table 10.
試験例６
兵庫県加西市内の水田圃場に試験区画を設け、窒素として６ｋｇ／１０ａ相当となるよう本発明配合肥料組成物４を全層混和した。温室内で２５日間育苗した水稲苗（品種：コシヒカリ）を乗用田植機を用いて坪当たり６０株移植した。移植１１２日後に区画内の連続１０株の地上部を刈り取り、籾と藁に分けたのち、籾の重量を測定した。
結果を表１１に示す。
Test Example 6
A test section was provided in a paddy field in Kasai City, Hyogo Prefecture, and the present invention blended fertilizer composition 4 was mixed in all layers so as to be equivalent to 6 kg / 10a as nitrogen. Rice seedlings (cultivar: Koshihikari) grown in a greenhouse for 25 days were transplanted 60 strains per tsubo using a riding rice transplanter. 112 days after transplantation, the above-ground part of 10 consecutive strains in the compartment was cut and divided into cocoons and cocoons, and the weight of the cocoons was measured.
The results are shown in Table 11.
試験例７
１／５０００ａポットに土壌を３．０ｋｇ充填し、入水して土壌を攪拌して代かきを行った。パイプハウス内で６３日間育苗した水稲苗（品種：コシヒカリつくばＳＤ１号）をポット当たり３本移植した。窒素として１５ｋｇ／１０ａ相当となるよう本発明配合肥料組成物１を苗に対し横約３ｃｍ、深さ約３ｃｍの位置に側条施用した。活着後はポットの上端まで湛水して、ガラス温室内で管理した。移植１１７日後に地際から植物体を刈り取り、脱穀して籾の重量を測定した。
また、本発明配合肥料組成物３、６、７、比較配合肥料組成物１、２および４の夫々を使用した場合についても、同様の操作を行った。
結果を表１２に示す。
Test Example 7
A 1 / 5000a pot was filled with 3.0 kg of soil, poured into water, stirred and soiled. Three rice seedlings (variety: Koshihikari Tsukuba SD1) grown for 63 days in a pipe house were transplanted per pot. The fertilizer composition 1 of the present invention was applied to the seedling at a position about 3 cm wide and about 3 cm deep so as to correspond to 15 kg / 10a as nitrogen. After soaking, it was flooded to the top of the pot and managed in a glass greenhouse. 117 days after transplanting, the plants were cut from the ground, threshed, and the weight of the straw was measured.
Moreover, the same operation was performed also about the case where each of this invention mixing fertilizer composition 3, 6, 7 and each comparative mixing fertilizer composition 1, 2, and 4 were used.
The results are shown in Table 12.
試験例８
１／５０００ａポットに土壌を３．５ｋｇ充填し、入水して土壌を攪拌して代かきを行った。パイプハウス内で２８日間育苗した水稲苗（品種：ヒノヒカリ）をポット当たり３本移植した。窒素として１５ｋｇ／１０ａ相当となるよう本発明配合肥料組成物２を土壌表層に施用した。活着後はポットの上端まで湛水して、ガラス温室内で管理した。移植１３３日後に地際から植物体を刈り取り、脱穀して籾の重量を測定した。
また、本発明配合肥料組成物５、６、７、比較配合肥料組成物１および４の夫々を使用した場合についても、同様の操作を行った。
結果を表１３に示す。
Test Example 8
The 1 / 5000a pot was filled with 3.5 kg of soil, poured into water, stirred and soiled. Three rice seedlings (variety: Hinohikari) grown in a pipe house for 28 days were transplanted per pot. This invention fertilizer composition 2 was applied to the soil surface layer so that it might correspond to 15 kg / 10a as nitrogen. After soaking, it was flooded to the top of the pot and managed in a glass greenhouse. 133 days after transplanting, plants were cut from the ground, threshed, and the weight of the straw was measured.
Moreover, the same operation was performed also about the case where each of this invention mixing fertilizer composition 5, 6, 7 and the comparison mixing fertilizer composition 1 and 4 were used.
The results are shown in Table 13.
試験例９
１／５０００ａポットに土壌を３．２ｋｇ充填し、窒素として１５ｋｇ／１０ａ相当となるよう本発明配合肥料組成物２を土壌に混和した。入水して土壌を攪拌して代かきを行った。パイプハウス内で７０日間育苗した水稲苗（品種：コシヒカリつくばＳＤ1号）をポット当たり３本移植した。活着後はポットの上端まで湛水して、ガラス温室内で管理した。移植１２６日後に地際から植物体を刈り取り、脱穀して籾の重量を測定した。
また、本発明配合肥料組成物７、比較配合肥料組成物１、３および５の夫々を使用した場合についても、同様の操作を行った。
結果を表１４に示す。
Test Example 9
The 1 / 5000a pot was filled with 3.2 kg of soil, and the fertilizer composition 2 of the present invention was mixed with the soil so as to be equivalent to 15 kg / 10a as nitrogen. The water was put in, and the soil was stirred and scooped. Three rice seedlings (variety: Koshihikari Tsukuba SD1) grown in a pipe house for 70 days were transplanted per pot. After soaking, it was flooded to the top of the pot and managed in a glass greenhouse. 126 days after transplanting, plants were cut from the ground, threshed, and the weight of the straw was measured.
Moreover, the same operation was performed also about the case where this invention mixing fertilizer composition 7 and each of the comparison mixing fertilizer compositions 1, 3, and 5 were used.
The results are shown in Table 14.
本発明により、水稲の収量が増加する。 According to the present invention, the yield of paddy rice is increased.
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| CN105409418A (en) * | 2015-11-30 | 2016-03-23 | 中国科学院亚热带农业生态研究所 | Amount-decreased chemical fertilizer deep application method based on reducing rice field nitrogen and phosphor non-point source pollution |
| CN115316096A (en) * | 2021-12-29 | 2022-11-11 | 浙江省农业科学院 | Method for reducing ammonia loss of rice field by side deep fertilization |
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| JPH05105569A (en) * | 1991-10-16 | 1993-04-27 | Central Glass Co Ltd | Fertilizer for paddy rice plant |
| JP2007289060A (en) * | 2006-04-25 | 2007-11-08 | Sumitomo Chemical Co Ltd | Manuring method in potato cultivation |
| JP2012006769A (en) * | 2010-06-22 | 2012-01-12 | Sumitomo Chemical Co Ltd | Fertilizer composition |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH05105569A (en) * | 1991-10-16 | 1993-04-27 | Central Glass Co Ltd | Fertilizer for paddy rice plant |
| JP2007289060A (en) * | 2006-04-25 | 2007-11-08 | Sumitomo Chemical Co Ltd | Manuring method in potato cultivation |
| JP2012006769A (en) * | 2010-06-22 | 2012-01-12 | Sumitomo Chemical Co Ltd | Fertilizer composition |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105409418A (en) * | 2015-11-30 | 2016-03-23 | 中国科学院亚热带农业生态研究所 | Amount-decreased chemical fertilizer deep application method based on reducing rice field nitrogen and phosphor non-point source pollution |
| CN105409418B (en) * | 2015-11-30 | 2018-04-10 | 中国科学院亚热带农业生态研究所 | A kind of Reducing amount of chemical fertilizer applied deep fertilizing method based on reduction rice field nitrogen, phosphorus pollution of area source |
| CN115316096A (en) * | 2021-12-29 | 2022-11-11 | 浙江省农业科学院 | Method for reducing ammonia loss of rice field by side deep fertilization |
| CN115316096B (en) * | 2021-12-29 | 2023-08-18 | 浙江省农业科学院 | Method for reducing ammonia loss of paddy field by side deep fertilization |
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