CN87102387A - Regular triangle cultivation method for rice - Google Patents

Abstract

A kind of equilateral triangle paddy rice is carried the training method, can reasonably utilize soil fertility and light resources, makes paddy rice carry out Nutrient Absorption and photosynthesis preferably, has overcome the traditional cultivation method because local overcrowding of plants causes and strives fertilizer and shading, and the part is crossed rare and waste soil fertility and light resources.Under the situation of same cave distance, can increase rice transplanting total cave number or same cave number can increase the cave distance down with such cultivation, thereby it is characterized in that reaching the purpose of raising output.

Description

The present invention relates to a kind of rice cropping method.

Traditional rice cropping method adopts the capable clearly demarcated form of ridge, mainly is for field weeding.Distance between rows and hills commonly used is 30 * 10 centimetres, 30 * 17 centimetres, and 30 * 20 centimetres.Because paddy rice has stronger branch evil ability, the result of dense planting tends to cause the Sheng of nourishing and growing early stage, and the Root Distribution part is overstocked, the cauline leaf middle and later periods, mutual shading was serious, was unfavorable for reproductive growth, therefore, it is many often to show as fringe, the fringe grain less, the grain little, gross yield is low.Some places adopt 30 * 23,30 * 27,30 * 30,33 * 33(centimetre) the thin planting culture technique, though overcome above-mentioned shortcoming to some extent, can not utilize soil fertility and limited light resources fully.

The objective of the invention is to find out a kind of cultivation method that the most reasonably utilizes soil fertility and light resources, embodying has in rare closely, and rare close rational plant distributes, thereby reaches the purpose of increasing the yield per unit area.

Accompanying drawing (1) is square transplanting method schematic diagram

Accompanying drawing (2) is an equilateral triangle transplanting method schematic diagram

Main feature of the present invention is to adopt equilateral triangle to distribute to carry out rice cropping. Shown in figure (2), the base of equilateral triangle is spacing in the rows, is decided to be a, and then line-spacing (being the height on the equilateral triangle base) can be drawn by Pythagorean theorem: line-spacing b= $\sqrt{a{}^2\mathrm{-\; (\; a\; /\; 2\; )}}{}^2$ ＝ $\sqrt{3}$ A/2, namely line-spacing is spacing in the rows $\sqrt{3}$ / 2 times.

On onesize square plot, establishing the plot length of side is A, and spacing in the rows is a, line-spacing=spacing in the rows=a during square transplanting method, and the cave number on every limit is A/a+1, total cave number is N ₁, N then ₁=(A/a+1) ²And the equilateral triangle transplanting method, wherein spacing in the rows is a on one side, then this cave, limit number still is A/a+1, and the line-spacing of another side is $\sqrt{3}$ A/2, then this cave, limit number should be A/ $\sqrt{3}$ A/2+1, total cave number is N ₂, N ₂=(A/a+1) (A/ $\sqrt{3}$ a/2+1）。The two compares the ratio of total cave number:

$\frac{N_2}{{\mathrm{<figure-callout\; id="1"\; label="N"\; filenames="87102387\_DRIMG1.png"\; state="\{\{state\}\}">N</figure-callout>}}_1}=\frac{\mathrm{(\; A\; /\; a\; +\; 1\; )\; (\; A\; /}\sqrt{3}\mathrm{a\; /\; 2\; +\; 1\; )}}{{\mathrm{(\; A\; /\; a\; +\; 1\; )}}^2}=\frac{\mathrm{2\; A\; +}\sqrt{3}a}{\sqrt{3}\mathrm{(\; A\; +\; a\; )}}\mathrm{\dots \dots \; (\; 1\; )}$

Since the plot vary in size the variation of cave number, N ₂/ N ₁Value also change, existing with different A, a value substitution formula (1) tabulation calculating as table one:

Result of calculation shows, changes the size in plot, and factors such as cave distance change little for the transplanting method of equilateral triangle and the ratio of the total cave of square transplanting method number.Proof also simultaneously under the situation that the length of side equates or on the plot that area equates, will be with the total cave of square transplanting method number about 1.15 times with the total cave of equilateral triangle transplanting method number, so the calculating of hole pressing number can improve output about 15%.

Under square transplanting method and situation that the total cave of equilateral triangle transplanting method number equates, both a values (cave distance) result of calculation such as table two relatively.

Result of calculation shows under the constant situation of total cave number, the cave of equilateral triangle transplanting method apart from than square transplanting method cave apart from increasing about 8.45%.Equilateral triangle transplanting method and traditional transplanting method relatively have following advantage:

1, the root system development of paddy rice is distributed as circle (overlooking), and root system is impartial consistent to the nutrient absorption capability of its surrounding soil, and 30 * 10 centimetres of traditional transplanting methods are not like this, overstocked between the spacing in the rows, the nourishment maintenance branch is striven in generation, and is wide between the line-spacing, the waste soil fertility.

2, the equilateral triangle transplanting method can more effectively utilize light source, makes light in all directions radiation situation about equally, local cave can not occur apart from overstocked and mutual shading, locally crosses rare and phenomenon that waste luminous energy.

3, the equilateral triangle transplanting method can ventilate from all directions, and traditional transplanting method can only be worked as wind and scraped when coming along ridge, just shows draughty advantage.

4, the equilateral triangle transplanting method in the cave under the identical situation than the traditional transplanting method rice transplanting of manying seedling about 15%, can corresponding raising output about 15%.

5, the equilateral triangle transplanting method increases the cave apart from 8.45% than traditional transplanting method, thereby improves the plant strain growth condition under total constant situation of cave number.

6, the equilateral triangle transplanting method is than the land utilization rate height of traditional transplanting method, and the shade of four circle encirclements partly than three round shades that surround among Fig. 2 partly greatly from Fig. 1.

Embodiment:

Find out local rice high yield cultivation distance between rows and hills, as being example with 30 * 10 centimetres

1, obtain the cave number of every mu of traditional cultivation method:

Every cave area △ S=0.3 * 0.1=0.03 rice ², every mu of land area is 666.67 meters ², the X=666.67/0.03=22222 cave is counted in total cave of every mu of paddy rice.

2, the density with 30 * 10 centimetres of rice transplantings is reduced into the cave of square transplanting method apart from a

a＝ $\sqrt{\mathrm{666.67}}/\sqrt{\mathrm{22222}}$ =0.1732 meter.

3, obtain one mu of total cave of paddy rice of equilateral triangle transplanting method number, identical in the standing area of every cave rice shoot root system according to formula (1), under the situation that nutrition radius R value equates, the cave number of equilateral triangle transplanting method is 1.15 times of square transplanting method, then N ₂=22222 * 1.15=25555.

4, obtain the line-spacing of equilateral triangle transplanting method, b= $\sqrt{3}$ / 2a=0.145 rice.

5, carry out rice transplanting by Fig. 2 figure again, whenever inserted after the delegation, staggered positions, insert next line again, or mark the graticule rice transplanting.

Claims (3)

1, a kind of rice cropping method by line-spacing and the clearly demarcated form distribution rice shoot of spacing in the rows, is characterized in that equilateral triangle form distribution rice shoot, and its line-spacing is a spacing in the rows $\sqrt{3}$ / 2 times, its cave number increases than common cultivation method or the cave number equates that the cave is apart from increase under the situation.

2,, it is characterized in that the cave number of regular triangle cultivation method and the ratio of traditional cultivation method cave number are N according to the described rice cropping method of claim 1 ₂/ N ₁=( $\sqrt{3}$ a+2A）/ $\sqrt{3}$ (A+a)=1.15, A is the plot length of side in the formula, and a is a spacing in the rows, N ₂Be regular triangle cultivation method cave number, N ₁Be common cultivation method cave number.

3, according to the described rice cropping method of claim 1, it is characterized in that under total constant situation of cave number the regular triangle cultivation method cave apart from than common cultivation method cave apart from increasing by 8.45%.

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