Machine-transplanted hybrid rice hill-reduction seedling-stabilizing large-ear culturing method

A cultivation method and technology of hybrid rice, applied in the field of machine-transplanted hybrid rice with reduced holes, stable seedlings, and large spikes, can solve the problems of machine-transplanted hybrid rice with many missed insertions, time-consuming and labor-intensive replacement of seedlings, serious pests and diseases, etc., and achieve improved planting efficiency. Efficiency, increased spike size, and increased yield

Active Publication Date: 2016-08-31
SICHUAN AGRI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to provide a method for cultivating machine-transplanted hybrid rice with reduced holes, stable seedlings, and large spikes, aiming to solve the problems of machine-transplanted hybrid rice

Method used

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  • Machine-transplanted hybrid rice hill-reduction seedling-stabilizing large-ear culturing method
  • Machine-transplanted hybrid rice hill-reduction seedling-stabilizing large-ear culturing method
  • Machine-transplanted hybrid rice hill-reduction seedling-stabilizing large-ear culturing method

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Effect test

example 1

[0029] In 2014 and 2015, high-yield demonstrations were conducted in Pi County with narrow and wide hole spacing respectively. The results showed (Table 1) that the yield of wide hole spacing was higher than that of narrow hole spacing, and the theoretical yield of narrow hole spacing was 610kg / mu- 710kg / mu, Fyou 498 has an average yield of 640kg / mu after acceptance; the theoretical yield of wide hole spacing is more than 700kg / mu, and the highest yield at acceptance is nearly 800kg / mu, which greatly improves the yield. From the perspective of yield components, the increase in yield with wide-hole spacing mainly depends on the increase in thousand-grain weight and seed-setting rate, and the number of solid grains per panicle and effective panicle are not much different. It shows that the reduction in the number of holes per mu will not affect the number of effective panicles and affect the yield. It may be because of the large space that it is conducive to the occurrence of eff...

example 2

[0033]In 2014, a special test was set up in Pixian County to study the wide and narrow hole spacing in two seedling-raising environments (field seedbed and greenhouse) and three seedling ages (20d, 30d, 40d). Seedlings, the results show (Table 2), in the case that the basic seedlings with wide hole spacing are significantly less than those with narrow hole spacing (the number of main stems becomes less, which greatly reduces the contribution to yield), the 30d seedling age in the greenhouse is significantly lower than that of the narrow hole spacing. still have high yield potential. Under field seedling raising conditions, machine-transplanted narrow hole spacing at different seedling ages has higher effective ears, but the yield of narrow hole spacing at 40d seedling age is significantly higher than that of wide hole spacing, and the other treatments have no significant difference; The effective panicles were slightly higher than the narrow hole spacing, and the 30d seedling ...

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Abstract

The invention discloses a machine-transplanted hybrid rice hill-reduction seedling-stabilizing large-ear culturing method. The machine-transplanted line spacing of hybrid rice is 0.30 m, and the hill spacing is adjusted to be 0.20 m to 0.25 m; the seedling grabbing area is set according to the seedling establishment percentage, and during transplanting, the number of seedlings in each hill is 3 to 5 on average so that it can be guaranteed that the number of survival seedlings in each hill is 2 to 4 after regeneration, the density is 132000 hills per hm<2> to 167000 hills per hm<2>, the average total seedling number is 240 pieces per hm<2> to 300 pieces per hm<2>; in other words, the weight of seeds per hm<2> is kept being 18 kg to 22.5 kg. According to the machine-transplanted hybrid rice hill-reduction seedling-stabilizing large-ear culturing method, the number of transplanting hills is reduced by 25.8% to 41% compared with conventional transplanting, and transplanting efficiency is greatly improved; as the number of hills is decreased without decreasing the number of seedlings, the number of seedlings in each hill is increased, the transplanting missing rate is reduced by 10 percent or above, and the number of persons for seedling supplementing is decreased by 3 to 4 per hm<2>; the machine-transplanted late-planting and late-harvesting area of multi-cropping rice fields in Sichuan is large, and rainwater after autumn is much; when the number of hills is decreased, ventilation and light transmitting become better, pest and disease damage is reduced, lodging is reduced, and large ears, more grains and high yield are achieved.

Description

technical field [0001] The invention belongs to the technical field of rice planting, and in particular relates to a cultivation method for machine-transplanted hybrid rice with reduced holes, stable seedlings, stable seedlings and large spikes. Background technique [0002] Rice is the main food crop in China and plays a pivotal role in my country's food security. In the case of a sharp decline in the rural labor force, the mechanized rice planting area is gradually increasing. By 2013, the national rice mechanical planting level and machine harvesting level had reached 36.1% and 80.9% respectively. Sichuan is a major rice producing province, and it is an inevitable trend to comprehensively promote the mechanization of rice production. To ensure food security, the stable and high yield of rice mechanization is particularly important. The size of rice planting plays a key role in the formation of rice population structure in the later stage, thus affecting the formation of ...

Claims

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Application Information

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IPC IPC(8): A01G16/00A01G22/22
CPCA01G22/22
Inventor 任万军陶有凤钟晓媛赵敏邓飞王丽
Owner SICHUAN AGRI UNIV
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