Rice over-eight inch row-planting method

Abstract

The invention relates to the technical field of rice mechanical planting, and relates to rice cultivation by using an over-eight inch row-planting method, and is characterized in that the use plant spacing is determined to be 120 mm by the land block of moderate-low fertility, the use plant spacing is determined to be 140 mm by the land block of high fertility, the density change and the damage caused by the soil fertility and rice tillering capacity are solved by that the plant spacing is determined to be 9-inch, the 9-inch line spacing is reduced and the density is increased, and the transplanting principle that if the rice plant is high, the density is low, and if the rice plant is low, the density is high is adopted, a corresponding row spacing is selected if the plant height is in line spacing range of less than 9 inches and larger than 8 inches and rice transplanting is carried out, and the number of basic seedlings in the relative 9-inch row is increased by reducing the line spacing, a relatively fixed row 9*3 interpolation method can be used for continuously increasing the yield and stably increasing the yield.

Description

[0001] This divisional application comes from the application number 2015102792781, the application date was May 28, 2015, and the name: rice cultivation method in big eight-inch rows and seedling box, horizontal pushing root transplanting method and separate transplanting mechanism. technical field [0002] The invention relates to the technical field of rice mechanical planting, and specifically refers to the cultivation of rice by using a large eight-inch row cultivation method, which can continue to increase rice yield. Background technique [0003] Rice in different regions has different requirements for row spacing due to different variety factors and growth environments. The variety factors that affect row spacing are mainly tillering ability and rice plant height, the environmental factors are mainly soil fertility, and the external factors are mainly fertilizer application. It is found that the height of the rice plants is within the range of 700-1400 mm. The princip...

AI Technical Summary

Problems solved by technology

[0006] The technical scheme adopted in order to achieve the above-mentioned purpose is: use the paddy rice large eight-inch row-spacing cultivation method, the rice row-spacing is determined according to the variety used and the growth environment, what is generally used at this stage is machine-transplanted at a 9-inch-row-3-inch-row-spacing, Rice yield is mainly determined by three factors, the number of panicles per unit area, the number of grains per panicle and the weight of 1,000 grains. For plots with medium and low fertility, the row spacing can be fine-tuned by using the precision transplanting characteristics of the rice transplanter, and the plant height of the variety factor that affects the row spacing Choose the corresponding row spacing between the row spacing of large eight-inch rows, and use 3-inch row spacing at the same time to avoid the disadvantages of 9×3 transplanting rice seedlings that rely on excessive fertilizer to increase production, so as to increase the basic number of seedlings to increase production, thereby increasing the number of spikes per unit area. For plots with superior fertility, choose a large 8-inch row spacing and 4-inch plant spacing to avoid the damage caused by 9×3. Properly increase the individual growth space to increase the number of tillers, the number of grains per ear and the weight of 1,000 grains, and reduce the height of plant type and Density, to achieve a steady increase in production, why use a large eight-inch row spacing? For plots with medium and low fertility, the 9×3 insertion method is now applicable. If you do not rely on excessive use of chemical fertilizers to increase production, you must increase the density to increase production. Density selection continues to reduce the plant spacing for rice cultivation, which will cause diseases, increase the plant type and cause lodging, etc. Therefore, it is determined that the suitable plant spacing for medium and low fertility is still 3 inches, and the only option to increase the density is to reduce the row spacing to less than 9 inches. , such as choosing 8-inch rows according to people's customary cognition, but 8-inch rows have not been widely used and promoted in practice, which only shows that 8-inch rows cannot be adapted to hybrid rice because the density is too large, which affects tillering in the early stage. In the middle stage, it is prone to disease, the rate of ear formation is low, the lower leaf surface cannot receive light in the middle and late stages, the stalk is thin and high, the rate of ear formation, the number of grains per ear, and the thousand-grain weight are all low, and it is easy to lodging. It is only suitable for the current ordinary rice and has high requirements for production conditions. Hybrid rice is not suitable for ordinary rice, so the conditions for hybrid rice should be relaxed, and the row spacing should be increased when the plant spacing is 3 inches, and the row spacing should be greater than 8 inches. , especially for the pursuit and application of high-yielding varieties. High-yielding varieties are characterized by large fertilizer requirements, high stems, and large ears, which put forward higher requirements for row spacing. Inch, the so-called big eight-inch row is the row spacing greater than 8-inch row spacing, less than 9-inch row spacing interval, or the big eight-inch row is the row spacing greater than 264mm row spacing, less than 300mm row spacing interval, choose the big eight-inch row by increasing the basic number of seedlings, To increase production in medium and low fertility plots. Of course, for medium and low fertility plots, if the weather conditions are poor, windy, rainy, and prone to disease, the individual growth space should be appropriately increased, the density should be reduced for disease prevention, and the stem height should be reduced. To prevent lodging, the most direct way is to increase the row spacing. You can also use a 4-inch plant spacing, but you should choose a section of 270mm-280mm, so that the difference between the basic seedlings and 9×3 is small, and the spike rate and seed setting rate can be increased by increasing the number of tillers. and 1,000-grain weight to increase yield and achieve the goal of stabilizing yield increase; in comparison, for high-grade fertile plots, due to the good land and high fertilizer utilization efficiency, rice tillers will be more tillers, and the growth will be vigorous in the middle and late stages, resulting in a 9-inch row spacing of 3 The rice planted with an inch spacing is crowded in a single row and the light transmission is poor, and the overall density also increases accordingly. It is very easy to cause the rice to be infected with disease, green, and the plant height. In order to continue to increase production and solve the density changes and harms caused by the above soil fertility and tillering ability, the only way to increase the distance between plants is to use a 4-inch distance between plants, that is, to increase the individual growth space of seedlings per hole relative to 9×3. Although the 9×4 interpolation method It can reduce diseases and lodging, but it cannot exceed the output of 9×3 or basically keep the same. The reason is that the basic seedlings are too different. See the comparison table (1) 9×4 has 2647 hole seedlings per acre than 9×3, and the reduction ratio It can reach 14%. In this way, the number of basic seedlings can only be increased by shrinking rows, and the row spacing should be 8×4 according to the habit. However, it can be seen from the comparison table (1) that from the comparison of the individual growth space of each seedling, 8 The space of ×4 is only increased by 9.6cm² compared with 9×3. The increase is too little, and it is basically the same as that of 9×3. Compared with it, it is not obvious and of little significance. It can only meet the needs of existing low-product varieties. This advantage is easily lost The application of high-yield varieties has broken through, so it is necessary to choose a row spacing greater than 8 inches and a row spacing smaller than 9 inches to continue to increase rice production and achieve stable production;

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