Rice growth regulator for severe soda saline-alkali soil

Abstract

The invention relates to a rice growth regulator, in particular to a rice growth regulator for severe soda saline-alkali soil. The rice growth regulator for the severe soda saline-alkali soil is prepared from abscisic acid and organic silicon. The abscisic acid and the organic silicon in the growth regulator for the rice in the severe soda saline-alkali soil play roles and have a synergistic effect, so that the growth regulator has a remarkable yield increasing effect on the rice in the severe soda saline-alkali soil. According to the method, the problem of rice planting in the severe soda saline-alkali soil is solved, the rice yield is greatly increased, and the method has important significance on comprehensive utilization of the severe soda saline-alkali soil and guarantee of grain safety.

Description

Technical Field

[0001] The invention relates to a rice growth regulator. Background Art

[0002] Comprehensive utilization of saline-alkali land is of great significance to ensuring food security. Soda saline-alkali land is one of the types of saline-alkali land in my country. Its main salts are NaHCO3 and Na2CO3. It has problems such as strong alkalinity, poor soil fertility, mixed salt-alkali stress, and deterioration of physical and chemical properties. Planting rice in saline-alkali land is an important way to achieve efficient utilization of soda saline-alkali land resources. However, the saline-alkali stress in soda saline-alkali paddy fields severely restricts the growth, development and yield of rice. According to research, rice has different sensitivities to saline-alkali stress at different growth stages. Generally speaking, rice is more sensitive to salinity in the reproductive stage than in the nutritional stage.

[0003] In order to effectively manage saline-alkali land, water conservancy irrigation and drainage engineering measures, physical improvement, chemical improvement and other measures are currently being adopted to adapt the land to planting, which can alleviate the inhibition and damage of rice under saline-alkali stress. In practice, these technical measures are all aimed at improving rice yield and quality by changing the external soil environment for plant growth to adapt the land to planting. However, the above measures can mostly achieve rice planting in light and moderate soda saline-alkali land, but it is difficult to achieve efficient management for severe saline-alkali land. From the perspective of actual production costs, the implementation of irrigation and drainage engineering, physical measures and chemical measures has the problems of large technical implementation workload, high cost and slow recovery.

[0004] In addition, from the perspective of planting suitable crops for the land, on the basis of salt-alkali tolerant rice varieties, technical measures such as growth regulators and trace elements are used to improve the salt-alkali resistance of plants, which has also achieved certain results. However, this method is only applicable to light and moderate soda saline-alkali land, and has little effect on heavy soda saline-alkali land. Summary of the invention

[0005] In order to solve the defects that the current single methods of adapting land to crops and adapting crops to land are only applicable to light and moderate soda saline-alkali land, and are difficult to efficiently manage severe soda saline-alkali land and have insufficient benefits, the present invention provides a rice growth regulator suitable for severe soda saline-alkali land.

[0006] The invention discloses a rice growth regulator for severe soda saline-alkali land, which is composed of abscisic acid and organosilicon;

[0007] Wherein, the organic silicon is ethoxy-modified polytrisiloxane; the ratio of abscisic acid to organic silicon is 0.45g:25-75ml.

[0008] Furthermore, the ratio of abscisic acid to silicone is 0.45 g: 40-60 ml.

[0009] Furthermore, the heavy soda saline-alkali land rice growth regulator also includes gibberellic acid, and the ratio of abscisic acid to gibberellic acid is 0.45g:4-4.1g.

[0010] Furthermore, the heavy soda saline-alkali land rice growth regulator also includes acetic acid, and the ratio of abscisic acid to acetic acid is 0.45g:10-20ml.

[0011] Furthermore, the heavy soda saline-alkali land rice growth regulator also includes an emulsifier, ethanol, and propylene glycol, and the ratio of abscisic acid to the emulsifier, ethanol, and propylene glycol is 0.45g:180ml:90ml:180ml.

[0012] The method for using the above-mentioned heavy soda saline-alkali land rice growth regulator is to dilute the heavy soda saline-alkali land rice growth regulator and evenly spray it on the leaves of rice plants in the breakout stage after 4 pm on a sunny day.

[0013] The abscisic acid and organosilicon in the heavy soda saline-alkali land rice growth regulator of the present invention both play a role, and the synergistic effect has a significant effect of increasing the yield of rice in heavy soda saline-alkali land. The present invention solves the problem of rice planting in heavy soda saline-alkali land, greatly increases rice yield, and is of great significance for the comprehensive utilization of heavy soda saline-alkali land and for ensuring national food security.

[0014] The heavy soda saline-alkali land rice growth regulator of the present invention is simple to use and easy to operate. It can achieve the increase of rice yield in heavy soda saline-alkali land by spraying it only once during the rice growth breakthrough period. It has the advantages of efficient management, low manpower, capital and cost investment, and obvious rice yield increase. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention are clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the 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.

[0016] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0017] Specific implementation method 1: This implementation method is a rice growth regulator for severe soda saline-alkali land, which is composed of abscisic acid and organosilicon;

[0018] Wherein, the organic silicon is ethoxy-modified polytrisiloxane; the ratio of abscisic acid to organic silicon is 0.45g:25-75ml.

[0019] Specific embodiment 2: This embodiment differs from specific embodiment 1 in that the ratio of abscisic acid to organosilicon is 0.45 g: 40-60 ml. Other steps and parameters are the same as those of specific embodiment 1.

[0020] Specific implementation method three: This implementation method provides a rice growth regulator for severe soda saline-alkali land, and the rice growth regulator for severe soda saline-alkali land includes abscisic acid and organosilicon;

[0021] Wherein, the organic silicon is ethoxy-modified polytrisiloxane; the ratio of abscisic acid to organic silicon is 0.45g:25-75ml.

[0022] Specific embodiment 4: This embodiment differs from specific embodiment 3 in that the heavy soda saline-alkali land rice growth regulator also includes gibberellic acid, and the ratio of abscisic acid to gibberellic acid is 0.45g:4-4.1g. Other steps and parameters are the same as those of specific embodiment 3.

[0023] Previous studies have shown that abscisic acid and gibberellins antagonize each other, and gibberellins can be used to offset several effects of abscisic acid. However, the experimental research of the present invention found that the use of the heavy soda saline-alkali land rice growth regulator containing gibberellic acid in the heavy soda saline-alkali land paddy rice breakout period can increase the dry weight per unit area and the yield per unit area.

[0024] Specific embodiment 5: This embodiment differs from specific embodiment 3 or 4 in that the heavy soda saline-alkali land rice growth regulator also includes acetic acid, and the ratio of abscisic acid to acetic acid is 0.45g:10-20ml. Other steps and parameters are the same as those of specific embodiment 3 or 4.

[0025] In this embodiment, the acetic acid concentration is 5%.

[0026] Specific embodiment 6: The difference between this embodiment and specific embodiment 3, 4 or 5 is that the heavy soda saline-alkali land rice growth regulator also includes an emulsifier, ethanol, and propylene glycol, and the ratio of abscisic acid to emulsifier, ethanol, and propylene glycol is 0.45g: 180ml: 90ml: 180ml. Other steps and parameters are the same as those of specific embodiment 3, 4 or 5.

[0027] Example 1

[0028] Test location: Honggangzi Township, Da'an City, Jilin Province; Rice variety: Ji Nian No. 6; Soil (pH 10.05, EC0.55mS / cm). For newly reclaimed saline-alkali paddy fields, only irrigation and drainage were used in the first year, and the rice yield was close to total failure. Based on the first year, irrigation and drainage were used to wash away salt during the soaking period, and salt-alkali tolerant varieties (Jinian No. 6) + dense planting measures (30cm×13.3cm, 7-9 plants per hole) + irrigation and drainage were used during the original period. The conventional management method of basal fertilizer before soaking, green fertilizer after transplanting, and fertilization during the tillering period was adopted. A certain water layer should be maintained throughout the growth period, water should be changed frequently, and the field should not be exposed to the sun to prevent salt and alkali.

[0029] The experimental treatment was carried out during the heading and flowering stage, when 20-30% of the rice grains were broken (breakage stage).

[0030] The experiment was conducted with 22 treatments and three replicates. Each treatment group had three plots, and each plot had a 10 m 2 . per hm 2 The spraying amount was 40 kg. The growth regulator was diluted to the use concentration and sprayed evenly on the leaves of the rice plants after 4 pm on a sunny day. The growth regulators used in each treatment group, the amount of each component used, and the yield are shown in Table 1.

[0031] Table 1

[0032]

[0033]

[0034]

[0035] The abscisic acid and organosilicon in the heavy soda saline-alkali land rice growth regulator of the present invention act synergistically, and the addition of organosilicon can not only play the role of surfactant and silicon element supplement, but also can weaken the decomposition of abscisic acid under strong light, prolong the action time of abscisic acid, and enhance the yield-increasing effect.

[0036] For severe soda saline-alkali land with pH>10, even if irrigation and flushing plus salt-alkali tolerant rice varieties (CK) are used, the rice yield per hectare is only 0.42 tons. Using a single ingredient (abscisic acid or silicone) to increase yield, the rice yield per hectare is less than 0.85 tons. Due to the low yield in the past, researchers in this field have lost hope and confidence in the research of rice planting in severe soda saline-alkali land. The severe soda saline-alkali land rice growth regulator of the present invention increases the rice yield per hectare in severe soda saline-alkali land to more than 1.38 tons, and the yield is increased by more than 160%. This is of great significance for the almost abandoned severe soda saline-alkali land.

[0037] According to the test, the higher the concentration of organic silicon, the better. For example, the spraying amount of organic silicon is 75ml / hm2. 2It can be seen that the yield has a clear downward trend. The use of emulsifier + ethanol + propylene glycol + vinegar can increase the yield, but the yield increase effect is limited.

[0038] This experimental study found that the use of the heavy soda saline-alkali land rice growth regulator containing gibberellic acid in the heavy soda saline-alkali land paddy rice breakthrough period can increase the unit area dry weight and unit area yield to a certain extent.

[0039] Example 2

[0040] The test site of this embodiment: two different saline-alkali lands in Honggangzi Township, Da'an City, Jilin Province; rice variety: Jilin No. 6. Both saline-alkali lands are newly reclaimed saline-alkali paddy fields. In the first year, only irrigation and drainage were used, and the rice yield was close to total failure. On the basis of the first year, irrigation and drainage were used to wash away salt during the field soaking period, and salt-alkali tolerant varieties (Jinian No. 6) + dense planting measures (30cm×13.3cm, 7-9 plants per hole) + irrigation and drainage measures were adopted during the original season. And the conventional management method of base fertilizer before field soaking, green fertilizer after transplanting and fertilization during the tillering period was adopted. A certain water layer must be maintained throughout the growth period, water must be changed frequently, and the field should not be exposed to the sun to prevent the return of salt and alkali.

[0041] The experiment was set up with 4 treatments and three replicates, 3 plots in each treatment group, and 10m 2 . per hm 2 The spraying amount is 40 kg. After diluting the growth regulator to the use concentration at the heading and flowering stage, spray it evenly on the leaves of the rice plants after 4 pm on a sunny day. The amount of the heavy soda saline-alkali land rice growth regulator used in each treatment group and the yield are shown in Table 2. Table 2

[0042]

[0043]

[0044] The experimental results show that the heavy soda saline-alkali land rice growth regulator of the present invention has a more obvious effect of increasing rice yield in land with heavier salinity.

[0045] Example 3

[0046] Test location: Honggangzi Township, Da'an City, Jilin Province; Rice variety: Ji Nian No. 6; Soil (pH 10.01, EC0.70mS / cm). For newly reclaimed saline-alkali paddy fields, only irrigation and drainage were used in the first year, and the rice yield was close to total failure. Based on the first year, irrigation and drainage were used to wash away salt during the soaking period, and salt-alkali tolerant varieties (Jinian No. 6) + dense planting measures (30cm×13.3cm, 7-9 plants per hole) + irrigation and drainage were used during the original season. The conventional management methods of basal fertilizer before soaking, green fertilizer after transplanting, and fertilization during the tillering period were adopted. A certain water layer should be maintained throughout the growth period, water should be changed frequently, and the field should not be exposed to the sun to prevent salt and alkali from returning.

[0047] This example conducted experiments at different rice stages (greening stage, filling stage, and cracking stage). The experiment was set up with 6 treatments and three replicates, with 3 plots in each treatment group and 10 m2 per plot. 2 . per hm 2 The spraying amount was 40 kg. The growth regulator was diluted to the use concentration and then sprayed evenly on the leaves of the rice plants after 4 pm on a sunny day. The growth regulators used in each treatment group, the amount of each component used, and the yield are shown in Table 3.

[0048] Table 3

[0049]

[0050] The heavy soda saline-alkali land rice growth regulator of the present invention has a more obvious stress resistance and yield-increasing effect when used on leaves of rice plants in the breakout period.

Claims

1. A rice growth regulator for severe soda saline-alkali land, characterized in that: The rice growth regulator for severe soda saline-alkali land is composed of abscisic acid and organosilicon; Wherein, the organic silicon is ethoxy-modified polytrisiloxane; the ratio of abscisic acid to organic silicon is 0.45g:25-75ml.

2. The rice growth regulator for severe soda saline-alkali land according to claim 1, characterized in that: The ratio of abscisic acid to silicone is 0.45 g: 40-60 ml.

3. A rice growth regulator for severe soda saline-alkali land, characterized in that: The rice growth regulator for severe soda saline-alkali land comprises abscisic acid and organosilicon; Wherein, the organic silicon is ethoxy-modified polytrisiloxane; the ratio of abscisic acid to organic silicon is 0.45g:25-75ml.

4. The rice growth regulator for severe soda saline-alkali land according to claim 3, characterized in that: The rice growth regulator for severe soda saline-alkali land also includes gibberellic acid, and the ratio of abscisic acid to gibberellic acid is 0.45g:4-4.1g.

5. The rice growth regulator for heavy soda saline-alkali land according to claim 3 or 4, characterized in that: The heavy soda saline-alkali land rice growth regulator also includes acetic acid, and the ratio of abscisic acid to acetic acid is 0.45g:10-20ml.

6. The rice growth regulator for heavy soda saline-alkali land according to claim 3 or 4, characterized in that: The heavy soda saline-alkali land rice growth regulator also includes an emulsifier, ethanol, and propylene glycol. The ratio of abscisic acid to the emulsifier, ethanol, and propylene glycol is 0.45g:180ml:90ml:180ml.

7. The method for using the heavy soda saline-alkali land rice growth regulator according to claim 1 or 3, characterized in that: The heavy soda saline-alkali land rice growth regulator is diluted and sprayed evenly on the leaves of rice plants in the breakout stage after 4 pm on a sunny day.

Images