Cultivation method for maintaining eating quality of rice in cold region

Abstract

The invention relates to the technical field of rice cultivation, in particular to a cultivation method for keeping taste quality of rice in a cold region, which comprises the following steps: step 1, selecting high-quality seeds, and sowing after accelerating germination of the seeds; 2, in the rice growth process, organic fertilizer is applied to the rice field every two weeks; step 3, testing the pH value of the soil, namely adjusting the pH value of the soil according to a soil test result by using a lime powder or ferric sulfate soil conditioner, and keeping the pH value of the soil in a range of 6.5-7.0; 4, in the rice growth process, irrigation is conducted according to the soil humidity, and the soil is kept moist; 5, reducing the irrigation amount two weeks before the mature period of the rice; and 6, immediately harvesting after the rice is mature. The special cultivation method for the rice in the cold region is designed, through the measures of reasonable fertilization, soil pH value adjustment, irrigation amount management, timely harvesting and the like, the starch content and flavor of the rice can be improved, meanwhile, the yield is increased, and the requirements of consumers for high-quality rice are met.

Description

Technical Field

[0001] The invention relates to the technical field of rice cultivation, in particular to a cultivation method for maintaining the taste quality of cold-region rice. Background Art

[0002] At present, the cultivation methods of cold-region rice mainly focus on increasing yield, while ignoring the taste quality of rice. Traditional cultivation methods easily lead to a single and ordinary taste of rice, which cannot meet people's higher demand for rice taste quality. In addition, due to the low pH value, the yield of rice grown in cold regions is small. Therefore, a new cultivation method for maintaining the taste quality of cold-region rice is proposed, which aims to improve the sweetness and flavor of rice through the optimization of fertilization, soil pH adjustment, irrigation and harvesting, so as to meet consumers' demand for high-quality rice. Summary of the invention

[0003] To address the deficiencies of the prior art, the present invention provides a cultivation method for maintaining the taste quality of cold-region rice, comprising the following steps: step one, selecting high-quality seeds, and sowing the seeds after germination; step two, applying organic fertilizer to the rice field every two weeks during the growth of the rice; step three, testing the pH value of the soil, using lime powder or iron sulfate soil conditioner, and adjusting the soil pH value according to the soil test results to keep it in the range of 6.5 to 7.0; step four, during the growth of the rice, irrigating according to the soil moisture to keep the soil moist; step five, reducing the amount of irrigation 2 weeks before the rice matures; step six, harvesting the rice immediately after it matures.

[0004] Preferably, in step three, a pH test paper is inserted into the soil and the pH value of the soil is determined based on the color change of the pH test paper after waiting for 1-5 minutes.

[0005] Preferably, in step three, a soil sample is added to a phenolphthalein indicator, and the color change is observed and compared with a standard color card to determine the specific pH value.

[0006] Preferably, in step 3, when the pH value is lower than 5.0, the spraying concentrations of the lime powder and ferrous sulfate are 200 g / m 2 and 20g / m 2 When the pH value is higher than 5.0 and lower than 5.5, the spraying concentrations of lime powder and ferric sulfate are 150g / m 2 and 40g / m 2 When the pH value is higher than 5.5 and lower than 6.0, the spraying concentrations of lime powder and ferric sulfate are 100 g / m 2 and 30g / m 2 When the pH value is higher than 6.0 and lower than 6.5, the spraying concentrations of lime powder and ferric sulfate are 50 g / m 2 and 20g / m2 .

[0007] Preferably, in step 4, the soil moisture is maintained above 80%.

[0008] Preferably, in step 5, the soil moisture content is reduced to 25%-50% 2 weeks before the rice matures.

[0009] The present invention has the following beneficial effects:

[0010] The present invention designs a cultivation method specifically for cold-region rice. Through measures such as reasonable fertilization, soil pH adjustment, irrigation management, and timely harvesting, it helps to increase the starch content and flavor of rice, maintain the quality of rice while increasing the yield, and meet consumers' demand for high-quality rice. Compared with traditional cultivation methods, the present invention can effectively improve the yield and taste of cold-region rice. DETAILED DESCRIPTION

[0011] The principles and steps of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0012] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0013] In one specific embodiment, a cultivation method for maintaining the taste quality of cold-region rice comprises the following steps:

[0014] Step 1: Select high-quality seeds and sow them after germination;

[0015] Step 2: Apply organic fertilizer to the rice fields every two weeks during the growth of the rice.

[0016] Step 3: Test the soil pH and use lime powder or iron sulfate soil conditioner to adjust the soil pH to keep it within the range of 6.5 to 7.0 based on the soil test results.

[0017] Step 4: During the growth of rice, irrigation is carried out according to soil moisture to keep the soil moist;

[0018] Step 5: Reduce irrigation 2 weeks before rice maturity;

[0019] Step six: harvest the rice immediately after it matures.

[0020] In this embodiment, in step three, a pH test paper is inserted into the soil and the pH value of the soil is determined based on the color change of the pH test paper after waiting for 1-5 minutes.

[0021] In this embodiment, in step three, a soil sample is added to a phenolphthalein indicator, and the color change is observed and compared with a standard color card to determine the specific pH value.

[0022] In this embodiment, in step 3, when the pH value is lower than 5.0, the spraying concentrations of the lime powder and ferric sulfate are 200 g / m 2 and 20g / m 2 When the pH value is higher than 5.0 and lower than 5.5, the spraying concentrations of lime powder and ferric sulfate are 150g / m 2 and 40g / m 2 When the pH value is higher than 5.5 and lower than 6.0, the spraying concentrations of lime powder and ferric sulfate are 100 g / m 2 and 30g / m 2 When the pH value is higher than 6.0 and lower than 6.5, the spraying concentrations of lime powder and ferric sulfate are 50 g / m 2 and 20g / m 2 .

[0023] The above cultivation method for maintaining the taste quality of cold-region rice can be further optimized and / or improved according to actual needs:

[0024] In step four, soil moisture is maintained above 80%.

[0025] In step 5, the soil moisture content is reduced to 25%-50% 2 weeks before the rice matures. In the pre-maturity stage, especially when approaching harvest, appropriate reduction of moisture helps the rice mature and harvest, and promotes the rice to produce a higher starch content, improve the sweetness and flavor of the taste.

[0026] Embodiment 1:

[0027] Select large and full seeds, sow them after germination, with a sowing density of 3-5 seeds per square meter, apply organic fertilizer every two weeks to ensure sufficient nutrient supply during rice growth, use pH test paper to probe into the soil, wait for 5 minutes, and determine the pH value of the soil is 5.6 based on the color change shown on the test paper. Spray 100g / m 2 Lime powder and 30g / m 2 Ferrous sulfate was used to adjust the soil pH value. One week later, pH test paper was used to test the soil again. After waiting for 5 minutes, the pH value of the soil was determined to be 6.3 based on the color change of the test paper. The concentration of lime powder was adjusted to 50g / m 2 and the concentration of ferrous sulfate is 20g / m 2Continue spraying, and use pH test paper to probe the soil again after one week, wait for 5 minutes, and measure the pH value to be 6.6. In the later stage of rice growth, maintain the soil moisture above 80% until two weeks before rice maturity, stop irrigation, reduce soil moisture content, and irrigate appropriately after the soil moisture content is reduced to 50%. The daily irrigation amount should be less than the daily moisture volatilization of the soil, so as to delay the reduction rate of soil moisture content until harvesting after maturity.

[0028] After harvesting, the crops were weighed and found to have a yield of 574 kilograms per mu, much higher than the previous 436 kilograms per mu. The starch content was detected to be 77%, a significant increase over the previous rice starch content.

[0029] In summary: the present invention designs a cultivation method specifically for cold-region rice. Through reasonable fertilization, soil pH adjustment, irrigation management, timely harvesting and other measures, it helps to increase the starch content and flavor of rice, maintain the quality of rice while increasing the yield, and meet consumers' demand for high-quality rice. Compared with traditional cultivation methods, the present invention can effectively improve the yield and taste of cold-region rice.

[0030] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical contents disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A cultivation method for maintaining the taste quality of cold-region rice, characterized in that: The following steps are involved: Step 1: Select high-quality seeds and sow them after germination; Step 2: Apply organic fertilizer to the rice fields every two weeks during the growth of the rice. Step 3: Test the soil pH and use lime powder or iron sulfate soil conditioner to adjust the soil pH to keep it within the range of 6.5 to 7.0 based on the soil test results. Step 4: During the growth of rice, irrigation is carried out according to soil moisture to keep the soil moist; Step 5: Reduce irrigation 2 weeks before rice maturity; Step six: harvest the rice immediately after it matures.

2. The method for maintaining the taste quality of cold-region rice according to claim 1, characterized in that: In step three, insert pH test paper into the soil and wait for 1-5 minutes to determine the pH value of the soil based on the color change of the pH test paper.

3. The method for maintaining the taste quality of cold-region rice according to claim 1, characterized in that: In step three, take a soil sample and add it to the phenolphthalein indicator, observe the color change and compare it with the standard color card to determine the specific pH value.

4. The method for maintaining the taste quality of cold-region rice according to claim 1, characterized in that: In step 3, when the pH value is lower than 5.0, the spraying concentrations of lime powder and ferric sulfate are 200 g / m 2 and 20g / m 2 When the pH value is higher than 5.0 and lower than 5.5, the spraying concentrations of lime powder and ferric sulfate are 150g / m 2 and 40g / m 2 When the pH value is higher than 5.5 and lower than 6.0, the spraying concentrations of lime powder and ferric sulfate are 100 g / m 2 and 30g / m 2 When the pH value is higher than 6.0 and lower than 6.5, the spraying concentrations of lime powder and ferric sulfate are 50 g / m 2 and 20g / m 2 .

5. The method for maintaining the taste quality of cold-region rice according to claim 1, characterized in that: In step four, soil moisture is maintained above 80%.

6. The method for maintaining the taste quality of cold-region rice according to claim 1, characterized in that: In step five, 2 weeks before rice maturity, the soil moisture content is reduced to 25%-50%.