Cold region rice spring-ploughing-free dry direct seeding cultivation method

A cultivation method, dry direct seeding technology, applied in the field of dry direct seeding cultivation of rice without spring plowing in cold regions, can solve labor and time-consuming problems, reduce labor intensity, weed control labor and mechanical operation costs, and land preparation labor and cost reduction effects

Pending Publication Date: 2021-10-19
FARMING & CULTIVATION RES INST OF HEILONGJIANG ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, "one" is carried out after sowing and before emergence, "second killing" is usually carried out 15 days after sowing, and "three replenishment" is generally carried out 30 days after sowing. Rational development of technology

Method used

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  • Cold region rice spring-ploughing-free dry direct seeding cultivation method
  • Cold region rice spring-ploughing-free dry direct seeding cultivation method

Examples

Experimental program
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Effect test

Embodiment 1

[0023] This example has been demonstrated for two consecutive years (2019, 2020) in the 500 mu dry direct-seeding rice field of Qixing Farm located in the Sanjiang Plain of Heilongjiang Province (the main rice production area of ​​Heilongjiang Province). When the previous crop of rice is harvested, the rice combine harvester with a straw chopping and spreading device is selected in time to harvest the rice, and the straw is chopped and evenly sprinkled at the same time. The harvester strictly controls the stubble height ≤ 10cm, the length of straw crushing ≤ 10cm, the uneven rate of straw throwing ≤ 20cm, and the qualified rate of crushing length ≥ 85%. After harvest, when the soil moisture content drops below 30%, the autumn soil preparation shall be carried out in time, and the 74kW reverse-rotation deep-buried rotary tiller shall be used to dry-rotate the straw and return it to the field in full, with a rotation depth of 10cm-15cm, so as to achieve no missing tillage and no ...

Embodiment 2

[0036] The difference from Example 1 is that this example is carried out in 120 mu of dry direct-seeding paddy fields located in the Sanjiang Plain of Heilongjiang Province (the main rice production area in Heilongjiang Province) for two consecutive years (2019, 2020), and the rest are implemented in the same manner. example 1.

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Abstract

The invention discloses a cold region rice spring-ploughing-free dry direct seeding cultivation method. The method comprises the following steps: after previous crops are harvested, when the water content of soil is reduced to 30% or below, autumn soil preparation is performed by using a rotary cultivator in time, and a base fertilizer is applied according to a conventional high-yield dry direct seeding cultivation technology before autumn soil preparation; in spring, land preparation is not performed any more, an early-maturing, density-tolerant, cold-tolerant and lodging-resistant rice variety with the number of main stem leaves being 1-2 fewer than that of a rice transplanting and cultivating variety mainly planted in the local place is selected, and seeds obtained after coating, seed soaking and germination accelerating are directly and evenly scattered on the field surface through an airplane; after sowing, a water layer of 3-5 cm is immediately irrigated, and 1200-1800 ml of a microcapsule suspension herbicide is sprayed per hectare through the airplane for closed weeding; and post-emergence water management is performed according to a conventional high-yield dry direct seeding cultivation technology. According to the method, spring soil preparation is not needed, water is immediately supplied after sowing, then the microcapsule suspension herbicide is sprayed for closed weeding, by one-time herbicide application, staged herbicide property release can be achieved, and the purposes of preventing and controlling weeds in the dry direct sowing rice field in the cold region in a staged mode without spring ploughing and one-time herbicide application are achieved.

Description

technical field [0001] The invention relates to the technical field of agricultural cultivation, in particular to a method for cultivating rice in cold regions without spring plowing and direct seeding. Background technique [0002] Heilongjiang Province is located in the high-latitude continental monsoon climate zone. The annual average temperature is between -5 and 4°C from north to south, and the soil freezes for as long as half a year. It is also vividly known as the cold rice region. In recent years, affected by factors such as labor shortages and water shortages, rice farmers are in urgent need of simplified cultivation techniques. Direct-seeding rice cultivation eliminates traditional procedures such as seedling raising, soaking in fields, and transplanting. It has the outstanding advantages of lightness, simplicity, and cost savings, and is increasingly favored by farmers. In my country's rice production, the area of ​​direct-seeding rice shows a trend of increasing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G22/22A01B79/02A01C21/00A01G13/00
CPCA01G22/22A01B79/02A01C21/005A01G13/00Y02P60/20
Inventor 张喜娟来永才孟英唐傲董文军刘猷红王文龙徐英哲王立志姜树坤杨贤莉谢婷婷姜辉刘凯任洋刘琦刘媛媛陈磊董擎辉王红蕾关宪任赵璞龙江雨
Owner FARMING & CULTIVATION RES INST OF HEILONGJIANG ACADEMY OF AGRI SCI
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