A cultivation method for improving yield of ratoons
By spraying a rice growth promoter containing papain, chamomile extract powder, bitter orange bark extract powder, and photosynthetic bacteria during the key growth period of ratooning rice, the problem of soil nutrient imbalance was solved, and the yield and quality of ratooning rice were improved.
Patent Information
- Application Number
- CN202610631061.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-05-09
- Publication Date
- 2026-07-14
AI Technical Summary
In current ratooning rice production, excessive application of chemical fertilizers leads to soil nutrient imbalance and degradation of microbial community structure, which affects the yield of ratooning rice.
A rice growth promoter is applied during the tillering, booting, and grain-filling stages of the first crop, as well as the seedling and booting stages of the second crop. The growth promoter consists of papain, chamomile extract powder, bitter bark extract powder, and photosynthetic bacteria. The concentration and dosage are optimized, and the application rate is 15L per mu.
It has enabled ratooning rice to mature within the normal time, sprout quickly and uniformly, grow well, and be free from lodging and pests, thus significantly increasing the yield of both the first and second seasons.
Smart Images
Figure CN122375439A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of crop cultivation technology, specifically to a cultivation method for increasing the yield of ratooning rice. Background Technology
[0002] Ratoon rice is a planting method that utilizes the axillary buds that survive on the rice stubble after the first harvest to germinate into panicles and produce a second crop of rice. It has the advantages of saving seeds and labor and improving land use efficiency. However, in existing technologies, increasing the yield of ratoon rice often relies on excessive application of chemical fertilizers, which leads to soil nutrient imbalance and degradation of microbial community structure, thus restricting sustainable production. Among these challenges, the yield and soil nutrient balance in the ratoon season after the first harvest are key technical difficulties. Summary of the Invention
[0003] To address the shortcomings of existing technologies, this invention provides a cultivation method for increasing the yield of ratooning rice. The method involves spraying a ratooning rice promoter during the tillering, booting, and grain-filling stages of the first-season rice, as well as during the seedling and booting stages of the ratooning season. The ratooning rice promoter includes papain, chamomile extract powder, bitter orange bark extract powder, and photosynthetic bacteria.
[0004] Preferably, the concentration of papain in the rice regeneration promoter is 2.0 g / L, the concentration of chamomile extract is 1.4~2.0 g / L, the concentration of bitter bark extract is 1.0~1.2 g / L, the concentration of Rhodopseudomonas acidophilus is 20~30 g / L, and the effective viable count of Rhodopseudomonas acidophilus is ≥2×10⁻⁶. 8 CFU / mL.
[0005] Preferably, the application rate of the rice growth promoter is the same during the tillering, booting, and grain-filling stages of the first-season rice crop, as well as the seedling and booting stages of the ratooning season, at 15L per mu (approximately 0.067 hectares), and should be applied after sunset.
[0006] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention uses papain, chamomile extract powder, bitter bark extract powder and photosynthetic bacteria to prepare a rice regeneration promoter. The rice regeneration promoter can enable the rice regeneration to mature within a normal time through the synergistic effect between the substances. The rice regeneration seedlings grow quickly and uniformly in the regeneration season, grow normally in the field, grow well, have no lodging, and have no obvious damage from diseases and pests. It can also significantly increase the yield of the "first season + regeneration season" double season. This product can be widely promoted as a supporting technology for rice regeneration production. Attached Figure Description
[0007] Figure 1 Comparison of ratooning rice and first-season rice yields in different treatment groups.
[0008] Figure 2The effects of different treatment groups on the seed setting rate of ratooning rice and first-season rice. Detailed Implementation
[0009] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0010] Located in Miluo City, Gupei Town, Miluo Village, the soil type is red-yellow clay, pH 5.5, organic matter 36.7 g / kg, available nitrogen 194 mg / kg, available phosphorus 7.8 mg / kg, continuously double-cropping rice, convenient irrigation and drainage, the field area is 20 mu.
[0011] The rice variety tested was Yongyou 4949.
[0012] The acidophilus rhodopseudomonas was purchased from Changsha Aigeli Bio-fertilizer Technology Development Co., Ltd.
[0013] The proportions of papain, chamomile extract powder, bitter orange bark extract powder, and Rhodopseudomonas acidophilus in the rice accelerators in Examples 1 to 3 are different. The specific dosages are shown in Table 1. The dosage of rice accelerator in Examples 1 to 3 is 15L per mu. No rice accelerator was used in Comparative Example 1. The dosage of rice accelerator in Comparative Examples 2 to 6 is the same as that in Example 1. The difference is that the substances contained in the rice accelerator are different, as shown in Table 2.
[0014] Table 1. Dosage of each substance in the rice accelerator in Examples 1-3 Table 2. Substances and contents of rice growth promoters in Comparative Examples 2-3 All examples and control examples were cultivated using the following method: (1) Cultivating strong seedlings: Apply rice seedling nutrient agent to the soil, one bag (400g / bag) per mu, then sow 308-cell seedling trays. Mix the disinfected seeds with the dry seedling care agent and sow them in the seedling trays. Then remove the film to harden the seedlings. After the seedlings have matured, spray with penoxsulam to control barnyard grass. Transplant rice seedlings at the 4-leaf stage, with 2-3 seedlings per hole and a planting density of 16.5×23.5cm.
[0015] (2) Fertilizer and water management: Apply 35 kg of 40% compound fertilizer per mu. Apply 10 kg of urea and 200 g of Tudoufa (produced by Wuhan Kuma Crop Nutrition Co., Ltd.) per mu 6 days after transplanting to promote seedling growth and tillering. Apply 2.5 kg of urea and 7.5 kg of potassium fertilizer per mu after drying the field and re-irrigating. Spray the ratooning rice promoter on the leaves after sunset during the rice tillering, booting, and grain filling stages.
[0016] (3) Water management: The water management principle is to moisten to promote tillering, dry the field to control seedlings, water sufficient to nourish the embryo, shallow water for heading, dry-wet grouting, and deep water for pesticide application. The whole process only involves deep water irrigation during fertilization, pesticide application, heading and flowering. The rest of the time, the field is exposed, mainly dry-wet. After the canopy is closed, the field is dried on May 30 and the drying is completed before June 10. The field is dried a second time about 10 days before harvest.
[0017] (4) Pest and weed control: Mainly control rice stem borer, sheath blight, planthopper, rice leaf roller, etc., and prevent rice blast. In mid-May and late June, use chlorantraniliprole plus abamectin to control rice leaf roller, and use trifluralin + pymetrozine to control rice planthopper and other pests and diseases twice. When applying tillering fertilizer, mix urea with 60g of benzyl thiamethoxam·benzyl succinate wettable powder per mu for pre-emergence weed control. In early May, use oxadiazon + cyhalofop-butyl + chlorpyrifos EC for foliar weed control to control grass and broadleaf weeds in the field, ensuring uniform heading and no weed damage at harvest time.
[0018] (5) First harvest: Harvest when the first harvest is 90% ripe and leave a uniform stubble height of 30cm.
[0019] (6) Management during the regeneration season: Irrigate within 2 days after the first harvest, apply 15 kg of urea per mu as seedling fertilizer, and apply 15 kg of 40% compound fertilizer as head-strengthening fertilizer after the seedlings emerge. During the seedling and booting stages of the regeneration season, spray the regeneration rice promoter with the same dosage and method as before.
[0020] Keep the field moist throughout the entire growth period, irrigate frequently with running water, and strictly prevent deep water from flooding the base of the plant or prolonged drought.
[0021] The seed setting rate and rice yield of the first and second seasons of ratooning rice in different embodiments and comparative examples were statistically analyzed, and the results are shown in Table 3.
[0022] Table 3 As can be seen from Table 3, the ratooning rice promoter described in this invention can not only improve the seed setting rate and yield of the first ratooning rice season, but also improve the seed setting rate and yield of the ratooning season. Compared with the comparative example, the ratooning rice promoter described in this invention has a significant effect on improving the seed setting rate and yield of rice.
[0023] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A cultivation method for increasing the yield of ratooning rice, characterized in that: A ratooning rice promoter is sprayed during the tillering, booting, and grain-filling stages of the first-season rice crop, as well as the seedling and booting stages of the ratooning season. The ratooning rice promoter includes papain, chamomile extract powder, bitter bark extract powder, and Rhodopseudomonas acidophilus.
2. The cultivation method for increasing the yield of ratooning rice according to claim 1, characterized in that: The regenerated rice promoter contains papain at a concentration of 2.0 g / L, chamomile extract at a concentration of 1.4–2.0 g / L, bitter orange bark extract at a concentration of 1.0–1.2 g / L, and Rhodopseudomonas acidophilus at a concentration of 20–30 g / L, with an effective viable count of Rhodopseudomonas acidophilus ≥2 × 10⁻⁶. 8 CFU / mL.
3. The cultivation method for increasing the yield of ratooning rice according to claim 1, characterized in that: The application rate of the growth promoter for ratooning rice is the same during the tillering, booting, and grain-filling stages of the first-season rice crop, as well as the seedling and booting stages of the ratooning season: 15L per mu.