CN114762487A

CN114762487A - Method for planting crops by using lanthanum chloride

Info

Publication number: CN114762487A
Application number: CN202011626449.0A
Authority: CN
Inventors: 周奕丰; 马新华; 赵倩
Original assignee: Guangdong Institute Of World Soil Resources
Current assignee: Guangdong Institute Of World Soil Resources
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2022-07-19

Abstract

A method for planting crops by utilizing lanthanum chloride comprises the following steps: s1: putting effective seeds of crops into a first lanthanum chloride solution, and soaking the seeds for 20-24 hours; s2: culturing the soaked effective seeds; s3: after the effective seeds are cultured until seedlings emerge, spraying a second lanthanum chloride solution on the leaf surfaces of the crops in the vegetative growth period; s4: and spraying a second lanthanum chloride solution on the leaf surfaces of the crops when the crops grow to the jointing and booting period. According to the method for planting the crops by using the lanthanum chloride, the lanthanum chloride solution is used for soaking the seeds, so that the seed germination is effectively promoted, and the germination rate is improved; in the vegetative growth period, lanthanum chloride solution is sprayed to the leaf surfaces of crops to promote the development of root systems; and lanthanum chloride solution is sprayed to the leaf surfaces in the jointing and booting period, so that the growth of crops is promoted, and the metabolism of the crops is enhanced.

Description

Method for planting crops by using lanthanum chloride

Technical Field

The invention belongs to the field of crop cultivation, and particularly relates to a method for planting crops by utilizing lanthanum chloride.

Background

China has the unique rare earth resource and the reserve is at the top of the world. The rare earth is called 'industrial monosodium glutamate', has unique physicochemical properties, and is widely applied to the fields of chemical industry, metallurgy, new energy and the like. Research shows that the rare earth plays an important role in the agricultural field.

The rare earth elements refer to a group of elements in the B group of the periodic table, namely 15 lanthanide elements such as La, Ce, Pr, Nd with atomic numbers of 57-71 and 17 elements in total, Sc and Y with very similar properties. In the market, rare earth is used as a single component to be added into a micro-fertilizer and a foliar fertilizer, but the rare earth is mixed into the fertilizer to be used as the rare earth micro-fertilizer, the rare earth foliar fertilizer and other products, and the rare earth micro-fertilizer, the rare earth foliar fertilizer and other products need to be used by long-term sprinkling irrigation in the growth process of crops, so that the investment cost is high.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a method for planting crops by using lanthanum chloride, which effectively improves the germination rate and the agronomic characters of the crops.

The invention is realized by the following technical scheme:

a method for planting crops by using lanthanum chloride comprises the following steps: s1: putting effective seeds of crops into a first lanthanum chloride solution, and soaking the seeds for 24 hours; s2: culturing the soaked effective seeds; s3: after the effective seeds are cultured until seedlings emerge, spraying a second lanthanum chloride solution on the liquid surface of the crops in the vegetative growth period; s4: and spraying a second lanthanum chloride solution on the leaf surfaces of the crops when the crops grow to the jointing and booting period.

According to the method for planting the crops by using the lanthanum chloride, the lanthanum chloride solution is used for soaking the seeds, so that the metabolism of the crop seeds can be promoted, the seed germination can be effectively promoted, the germination rate is improved, and the growth period is shortened; in the vegetative growth period, a lanthanum chloride solution is sprayed to the leaf surfaces of crops, and lanthanum chloride can improve the chlorophyll content of the crops, enhance photosynthesis, promote root development and increase the nutrient absorption capacity of the roots; the lanthanum chloride solution is sprayed to the leaf surfaces in the jointing and booting stage, so that the growth of crops is promoted, the metabolism of the crops is enhanced, the photosynthesis efficiency is improved, a foundation is laid for the accumulation of dry matters in the later stage, and the yield of the crops is improved; the lanthanum chloride is used for planting, so that the disease resistance, cold resistance and drought resistance of crops can be enhanced; the lanthanum chloride solution is systematically operated in the links of seed soaking, spraying and the like, so that the growth promotion effect is better exerted in the key period of the seed bud growth of crop seeds, the long-term irrigation is not needed, the operation is simple, and the cost is saved.

Further, spraying a second lanthanum chloride solution once in the vegetative growth period in S2; in S3, the second lanthanum chloride solution is sprayed on the liquid surface of the crop once in the jointing and booting period, so that the effect of promoting the growth in a critical period can be effectively achieved.

Further, the concentration of the first lanthanum chloride solution in the S1 is 2-20mg/L, and the first lanthanum chloride solution can improve the germination rate of the effective seeds of the crops after soaking in the concentration range.

Further, the concentration of the first lanthanum chloride solution in S2 is 2-5mg/L, the absorption effect of the crops on lanthanum chloride in the vegetative growth period is poorer than that in the seed soaking period, and if the concentration of the second lanthanum chloride solution is too high, the crops cannot absorb the lanthanum chloride, so that the effect of improving the agronomic characters is poorer; if the concentration is too low, the effect of improving the agronomic characters cannot be achieved.

Further, in S2, the effective seeds are cultured under a constant temperature condition, the temperature is maintained at 25-40 ℃, and the germination acceleration and white exposure of the effective seeds are facilitated.

Further, in S2, the effective seeds are cultured in a natural environment, and the effective seeds are subjected to germination accelerating and white exposure under the condition of saving cost.

Further, before the effective seeds of the crops are soaked, the seeds of the crops are screened to obtain the effective seeds of the crops. Screening to obtain effective seeds is favorable for improving the planting efficiency.

Further, seeds of the crops are put into the iodine-free sea salt solution, and the seeds which are sunk at the bottom of the iodine-free sea salt solution are used as effective seeds of the crops. The method is a specific implementation mode of screening seeds, and can quickly screen effective seeds of crops.

For a better understanding and practice, the present invention is described in detail below with reference to the following examples.

Detailed Description

The invention discloses a method for planting crops by utilizing lanthanum chloride, which comprises the following steps:

s1: putting effective seeds of crops into a first lanthanum chloride solution, and soaking the seeds for 20-24 hours;

s2: culturing the soaked effective seeds;

s3: after the effective seeds are cultured until seedlings emerge, spraying a second lanthanum chloride solution on the leaf surfaces of the crops in the vegetative growth period;

s4: and spraying a second lanthanum chloride solution on the leaf surfaces of the crops when the crops grow to the jointing and booting period.

The vegetative growth phase refers to the quantitative change process of the establishment and growth of vegetative organs such as roots, stems and leaves of crops, and is generally called as the vegetative growth phase when leaves grow to the stage before heading. And spraying the second lanthanum chloride solution on the leaf surfaces of crops to wet the leaf surfaces, wherein the solution is dripped as a standard.

According to the method for planting the crops by using the lanthanum chloride, the lanthanum chloride solution is used for soaking the seeds, so that the metabolism of the crop seeds can be promoted, the seed germination can be effectively promoted, the germination rate is improved, and the growth period is shortened; in the vegetative growth period, lanthanum chloride solution is sprayed to the leaf surfaces of crops, and the lanthanum chloride can improve the chlorophyll content of the crops, enhance the photosynthesis, promote the development of root systems and increase the nutrient absorption capacity of the root systems; the lanthanum chloride solution is sprayed to the leaf surfaces in the jointing and booting period, so that the growth of crops is promoted, the metabolism of the crops is enhanced, the photosynthesis efficiency is improved, and a foundation is laid for the accumulation of dry matters in the later period, so that the yield of the crops is improved; the lanthanum chloride is used for planting, so that the disease resistance, cold resistance and drought resistance of crops can be enhanced; the lanthanum chloride solution is systematically operated in the links of seed soaking, spraying and the like, so that the growth promotion effect is better exerted in the key period of the seed bud growth of crop seeds, the long-term irrigation is not needed, the operation is simple, and the cost is saved.

Before the effective seeds of the crops are soaked, the seeds of the crops are screened to obtain the effective seeds of the crops, and the screening to obtain the effective seeds is favorable for improving the planting efficiency. Optionally, seeds of the crops are put into the iodine-free sea salt aqueous solution, and the seeds which are sunk at the bottom of the iodine-free sea salt aqueous solution are used as effective seeds of the crops, which is a specific embodiment of seed screening, so that the effective seeds of the crops can be rapidly screened.

The concentration of the first lanthanum chloride solution in the S1 is 2-20mg/L, and the effective seeds of the crops can be soaked in the first lanthanum chloride solution within the concentration range, so that the germination rate is improved. The concentration of the second lanthanum chloride solution in the S2 is 2-5mg/L, the absorption effect of the crops on lanthanum chloride in the vegetative growth period is poorer than that of the crops soaked in the S1 seeds, if the concentration of the second lanthanum chloride solution is too high, the crops cannot absorb the lanthanum chloride, and the effect of improving the agronomic characters is poorer; if the concentration is too low, the effect of improving the agronomic characters cannot be achieved.

S2, culturing the effective seeds under a constant temperature condition, and maintaining the temperature at 25-40 ℃ to facilitate germination and white exposure of the effective seeds; or the effective seeds are cultured in a natural environment, and the effective seeds are subjected to germination acceleration and white exposure under the condition of saving cost.

Example 1

In this example 1, the crop to be planted was rice. And (3) screening the seeds of the rice by using 10% iodine-free sea brine, and taking the rice seeds settled at the bottom of the iodine-free sea brine as effective seeds. And (3) placing two equivalent effective seeds into a nylon net for tightening, respectively placing the effective seeds into clean water and a 10mg/L lanthanum chloride solution, and soaking the seeds for 24 hours in a sealed environment, wherein the clean water is used as a control group, and the lanthanum chloride solution is used as a treatment group. Taking out the nylon net with the effective seeds, draining, and putting into a constant-temperature constant-pressure incubator for 0, 6, 12 and 24 hours; and counting and recording the germination rate of the effective seeds in each time period. The seed soaking treatment with the clean water and the seed soaking treatment with the lanthanum chloride solution were repeated three times, respectively, to obtain table 1. As shown in Table 1, the germination rates of the effective seeds soaked in the lanthanum chloride solution of 10mg/L in 6 hours, 12 hours and 24 hours are higher than those of the effective seeds soaked in clear water, and the germination rate of the effective seeds soaked in clear water in 24 hours reaches 98.1%, so that the lanthanum chloride solution is beneficial to improving the germination rate of the rice seeds.

TABLE 1 influence of lanthanum chloride solution seed soaking on the germination percentage (%) of rice seeds

Treatment of	0 hour	6 hours	12 hours	24 hours
					Soaking seeds in clean water	0	5.2％	32.7％	78.9％
Soaking seeds with lanthanum chloride solution	0	16.4％	51.6％	98.1％

Example 2

In this example 2, the crop to be planted is rice. And (3) screening the seeds of the rice by using 10% iodine-free sea salt solution, and taking the rice seeds which are settled at the bottom of the iodine-free sea salt solution as effective seeds. And (3) placing two equal effective seeds into a nylon net for tightening, respectively placing the effective seeds into clean water and a lanthanum chloride solution of 20mg/L, and soaking the seeds for 24 hours in a sealed environment, wherein the clean water is used as a control group, and the lanthanum chloride solution is used as a treatment group. Taking out the nylon net with the effective seeds, draining, and putting into a constant-temperature constant-pressure incubator for cultivation for 0, 6, 12 and 24 hours; and counting and recording the germination rate of the seeds in each time period. The seed soaking treatment with clear water and the seed soaking treatment with lanthanum chloride solution were repeated three times, respectively, to obtain table 2. As shown in Table 2, the germination rates of the effective seeds soaked in the lanthanum chloride solution of 20mg/L in 6 hours, 12 hours and 24 hours are higher than those of the effective seeds soaked in clear water, and the germination rate of the effective seeds soaked in clear water in 24 hours reaches 99.2%, so that the lanthanum chloride solution is beneficial to improving the germination rate of the rice seeds.

TABLE 2 influence of lanthanum chloride solution seed soaking on the germination percentage (%) of rice seeds

Treatment of	0 hour	6 hours	12 hours	24 hours
					Soaking seeds in clean water	0	5.2％	32.7％	78.9％
Lanthanum chloride seed soaking	0	10.5％	52.4％	99.2％

Example 3

Respectively sowing effective seeds of the rice which is subjected to accelerating germination and whitening exposure after being soaked in clear water and effective seeds of the rice which is subjected to accelerating germination and whitening exposure after being soaked in a 10mg/L lanthanum chloride solution into PVC cultivation planting buckets which are assembled with soil, and transplanting effective seeds of 4 plants of rice in each PVC cultivation planting bucket. Set up control group (clear water is handled) and processing group (2mg/L lanthanum chloride solution is handled) respectively, control group and processing group are experimental to 9 PVC cultivation planting fill respectively, and wherein the effective seed of the rice that appears white that accelerates germination after the clear water seed soaking sets up to carry out the clear water to handle for the control group, and the effective seed of the rice that appears white that accelerates germination after the 10mg/L lanthanum chloride solution seed soaking sets up to handle the group and carry out the lanthanum chloride solution and handle. After the effective seeds emerge, rice plants are formed, and the leaf surfaces of the rice plants in the vegetative growth period and the jointing and booting period of a control group are sprayed with clear water, wherein the leaf surfaces of the rice plants in the vegetative growth period and the jointing and booting period are sprayed once respectively; and (3) spraying 2mg/L lanthanum chloride solution to treat leaf surfaces of rice plants in a vegetative growth period and a jointing-removing and booting period, wherein the spraying is performed once in the vegetative growth period and the jointing-removing and booting period respectively. Recording the indexes of the rice plant such as the agronomic characters and the like in the whole growth period until harvesting and yield measurement, wherein the growth period refers to the whole growth period of the crop and mainly comprises tillering, jointing, grouting and the like from birth to harvest. The experimental data were statistically analyzed and reported in table 3. As shown in Table 3, the plant height, leaf length, tiller number, spike length and spike number of the rice plant treated by the lanthanum chloride solution are all larger than those of the control group, and the agronomic characters of the rice plant treated by the lanthanum chloride solution are all better than those of the control group, so that the obtained lanthanum chloride solution is beneficial to improving the agronomic characters of the rice.

TABLE 3 influence of lanthanum chloride solution on agronomic traits of rice

Treatment of	Plant height (cm)	Leaf length (cm)	Tillering number (number)	Ear length (cm)	Ear number (number)
						Control group (clear water)	101.38±3.48	37.48±4.83	16.00±4.08	20.49±1.82	15.66±2.96
Treatment group (lanthanum chloride solution)	108.37±4.79	40.28±3.09	19.83±3.88	22.41±1.32	17.50±3.55

Example 4

And respectively sowing effective seeds of the rice which is subjected to accelerating germination and exposing white after being soaked in clear water and effective seeds of the rice which is subjected to accelerating germination and exposing white after being soaked in a 20mg/L lanthanum chloride solution into PVC cultivation planting buckets which are assembled with soil, and transplanting effective seeds of 4 plants of rice in each PVC cultivation planting bucket. Set up control group (clear water is handled) and processing group (5mg/L lanthanum chloride solution is handled) respectively, control group and processing group are experimental to 9 PVC cultivation planting fill respectively, and wherein the effective seed of the rice that appears white that accelerates germination after the clear water seed soaking sets up to carry out the clear water to handle for the control group, and the effective seed of the rice that appears white that accelerates germination after the 20mg/L lanthanum chloride solution seed soaking sets up to handle the group and carry out the lanthanum chloride solution and handle. After the effective seeds emerge, rice plants are formed, and the leaf surfaces of the rice plants in the vegetative growth period and the jointing and booting period of a control group are sprayed with clear water, wherein the leaf surfaces of the rice plants in the vegetative growth period and the jointing and booting period are sprayed once respectively; spraying 5mg/L lanthanum chloride solution to treat leaf surfaces of rice plants in a vegetative growth period and an elongation booting period, wherein the spraying is performed once in the vegetative growth period and the elongation booting period respectively; recording the indexes of the rice plant such as the agronomic characters and the like in the whole growth period until harvest and yield measurement, wherein the growth period refers to the whole growth period of the plant from birth to harvest and mainly comprises tillering, jointing, grouting and the like. The experimental data were statistically analyzed and recorded in table 4. As shown in Table 4, the plant height, leaf length, tiller number, spike length and spike number of the rice plant treated by the lanthanum chloride solution are all larger than those of the control group, and the agronomic characters of the rice plant treated by the lanthanum chloride solution are all better than those of the control group, so that the obtained lanthanum chloride solution is beneficial to improving the agronomic characters of the rice.

TABLE 4 influence of lanthanum chloride solution on agronomic characteristics of rice

Example 5

The crop planted in this example 5 was corn. And (3) screening the corn seeds by using 10% iodine-free sea brine, fishing out the floating corn seeds, and taking the corn seeds which are settled at the bottom of the iodine-free sea brine as effective seeds of crops. And respectively putting two effective seeds into two nylon nets, wherein each effective seed is 100 grains, respectively putting clean water and a 10mg/L lanthanum chloride solution into the two nylon nets, and soaking seeds for 24 hours in a sealed environment, wherein the clean water is used as a control group, and the lanthanum chloride solution is used as a treatment group. Taking out the nylon net, draining, and putting into a constant-temperature and constant-pressure incubator for incubation for 0, 6, 12 and 24 hours; and counting and recording the germination rate of the effective seeds in each time period. The seed soaking treatment with clear water and the seed soaking treatment with lanthanum chloride solution were repeated three times, respectively, to obtain table 5. As shown in Table 5, the germination rates of the effective seeds of the corn soaked by the lanthanum chloride solution of 10mg/L in 6 hours, 12 hours and 24 hours are higher than those of the effective seeds soaked by clear water, and the germination rate of the corn soaked in the clear water in 24 hours reaches 90.4%, so that the lanthanum chloride solution is beneficial to improving the germination rate of the corn seeds.

TABLE 5 Effect of lanthanum chloride solution seed soaking on corn seed germination (%) percentage

Treatment of	0 hour	6 hours	12 hours	24 hours
					Soaking seeds in clean water	0	5.1％	28.9％	86.5％
Soaking seeds with lanthanum chloride solution	0	7.7％	32.3％	90.4％

Example 6

The crop planted in this example 6 was corn. And (3) screening the corn seeds by using 10% iodine-free sea brine, fishing out the floating corn seeds, and taking the corn seeds which are settled at the bottom of the iodine-free sea brine as effective seeds of crops. And respectively putting two effective seeds into two nylon nets, wherein each effective seed is 100 grains, respectively putting clean water and a 20mg/L lanthanum chloride solution into the two nylon nets, and soaking seeds for 24 hours in a sealed environment, wherein the clean water is used as a control group, and the lanthanum chloride solution is used as a treatment group. Taking out the nylon net, draining, and putting into a constant-temperature and constant-pressure incubator for incubation for 0, 6, 12 and 24 hours; and counting and recording the germination rate of the effective seeds in each time period. The above treatments of soaking seeds in clean water and soaking seeds in lanthanum chloride solution were repeated three times, respectively, to obtain Table 6. As shown in Table 6, the germination rates of the effective seeds of the corn soaked by the lanthanum chloride solution of 20mg/L in 6 hours, 12 hours and 24 hours are higher than those of the effective seeds soaked by clear water, and the germination rate of the corn soaked in the clear water in 24 hours reaches 92.4%, so that the lanthanum chloride solution is beneficial to improving the germination rate of the corn seeds.

TABLE 6 influence of lanthanum chloride solution seed soaking on the germination percentage (%) of corn seeds

Treatment of	0 hour	6 hours	12 hours	24 hours
					Soaking seeds in clean water	0	5.1％	28.9％	86.5％
Soaking seeds with lanthanum chloride solution	0	7.8％	34.5％	92.4％

Example 7

The effective seeds of the corns which are germinated and exposed in white after being soaked in clear water and the effective seeds of the corns which are germinated and exposed in white after being soaked in the lanthanum chloride solution of 10mg/L are respectively sown in the PVC cultivation planting hoppers which are assembled with soil, 3 effective seeds are planted in each PVC cultivation planting hopper, the positions where the effective seeds are placed are the centers of the PVC cultivation planting hoppers, and the planting depth of the effective seeds is 1 cm. Set up control group (clear water is handled) and processing group (3mg/L lanthanum chloride solution is handled) respectively, control group and processing group are tested 4 PVC cultivation planting fill respectively, and wherein the effective seed of the maize that the white is revealed in the vernalization after the clear water seed soaking sets up to carry out the clear water to handle for the control group, and the effective seed of the maize that the white is revealed in the vernalization after the 10mg/L lanthanum chloride solution seed soaking sets up to handle the group and carry out the lanthanum chloride solution and handle. Spraying leaf surfaces of the corn plants in a vegetative growth period and a jointing-extending and booting period of a control area with clear water, wherein the vegetative growth period and the jointing-extending and booting period are respectively sprayed once; spraying and treating the leaf surfaces of the corn plants in the vegetative growth period and the jointing-pulling and booting period by using a 3mg/L lanthanum chloride solution, wherein the spraying and the spraying are respectively carried out once in the vegetative growth period and the jointing-pulling and booting period; recording the indexes of the corn plant such as agronomic characters and the like in the whole growth period until the harvest and yield measurement, wherein the growth period refers to the whole growth period of the crop. The experimental data were statistically analyzed and reported in table 7. As shown in Table 7, the plant height, leaf length, leaf width and stem thickness of the corn plants treated by the lanthanum chloride solution are all larger than those of the control group, and the agronomic characters of the corn plants treated by the lanthanum chloride solution are all better than those of the control group, so that the obtained lanthanum chloride solution is beneficial to improving the agronomic characters of the corn.

TABLE 7 influence of lanthanum chloride solution on agronomic performance of maize

Treatment of	Plant height (cm)	Leaf length (cm)	Leaf width (cm)	Stem diameter (mm)
					Control group (clear water)	196.54±2.83	74.18±2.45	9.72±1.23	75.44+1.36
Treatment group (lanthanum chloride solution)	202.12±4.86	78.33±2.56	10.41±2.65	83.22±2.53

Example 8

The effective seeds of the corn with the white color and the germination accelerating effect after the seeds are soaked in the clear water and the effective seeds of the corn with the white color and the germination accelerating effect after the seeds are soaked in the lanthanum chloride solution of 20mg/L are respectively sown in the PVC cultivation planting buckets with the soil, 3 effective seeds are planted in each PVC cultivation planting bucket, the position where the effective seeds are placed is the center of each PVC cultivation planting bucket, and the planting depth of the effective seeds is 1 cm. Set up the control group respectively (the clear water is handled) and handle the group (5mg/L lanthanum chloride solution is handled), the control group with handle the group and respectively carry out the experiment to 4 PVC cultivation planting fill, wherein the effective seed of maize that the white is revealed in the forced germination after the clear water seed soaking sets up to carry out the clear water to handle for the control group, 20mg/L lanthanum chloride solution seed soaking the forced germination is revealed the effective seed of maize that the white is revealed to set up to handle the group and carry out the lanthanum chloride solution and handle. The effective seed emergence forms a corn plant, and the leaf surfaces of the corn plants in the vegetative growth period and the jointing-extension booting period of a control group are sprayed with clear water, wherein the foliage of the corn plants in the vegetative growth period and the jointing-extension booting period are sprayed once respectively; spraying 5mg/L lanthanum chloride solution to the leaf surfaces of corn plants in a vegetative growth period and an elongation booting period, wherein the spraying is performed once in the vegetative growth period and the elongation booting period respectively; recording the indexes of the corn plant such as agronomic characters and the like in the whole growth period until the harvest and yield measurement, wherein the growth period refers to the whole growth period of the crop. The experimental data were statistically analyzed and reported in table 8. As shown in Table 8, the plant height, leaf length, leaf width and stem thickness of the corn plants treated by the lanthanum chloride solution are all larger than those of the control group, and the agronomic characters of the corn plants treated by the lanthanum chloride solution are all better than those of the control group, so that the obtained lanthanum chloride solution is beneficial to improving the agronomic characters of the corn.

TABLE 8 influence of lanthanum chloride solution on agronomic performance of maize

Treatment of	Plant height (cm)	Leaf length (cm)	Leaf width (cm)	Stem diameter (mm)
					Control group (clear water)	196.54±2.83	74.18±2.45	9.72±1.23	75.44+1.36
Treatment group (lanthanum chloride solution)	201.40±3.11	79.11±1.25	10.11±4.32	77.28±4.66

Example 9

In this example 9, the crop is wheat, and seeds of Sichuan wheat 104 are selected for planting. And (3) screening the seeds of the wheat by using 10% iodine-free sea salt water, fishing out the floating seeds of the wheat, and taking the seeds of the wheat which are settled at the bottom of the iodine-free sea salt water solution as effective seeds of crops. And respectively putting two effective seeds into two nylon nets, wherein each effective seed is 200g, and soaking the effective seeds in a 5% potassium permanganate solution for 30 minutes. Taking out the soaked effective seeds, washing and draining. And respectively putting clean water and a 10mg/L lanthanum chloride solution into the two nylon nets, and soaking the seeds for 24 hours in a sealed environment, wherein the clean water is used as a control group, and the lanthanum chloride solution is used as a treatment group. Taking out the nylon net, draining, and putting into a constant-temperature and constant-pressure incubator for incubation for 0, 6, 12 and 24 hours; and counting and recording the germination rate of the effective seeds in each time period. The seed soaking treatment with clear water and the seed soaking treatment with lanthanum chloride solution were repeated three times, respectively, to obtain table 9. As shown in Table 9, the germination rates of the effective seeds of wheat soaked by the 10mg/L lanthanum chloride solution in 6 hours, 12 hours and 24 hours are higher than those of the effective seeds soaked by clear water, and the germination rate of the seeds soaked in the clear water in 24 hours reaches 84.6%, so that the lanthanum chloride solution is obtained, and the germination rate of the wheat seeds is favorably improved.

TABLE 9 influence of lanthanum chloride solution seed soaking on wheat seed germination (%) percentage

Example 10

In this example 10, the crop is wheat, and seeds of Sichuan wheat 104 are selected for planting. And (3) screening the seeds of the wheat by using 10 percent iodine-free sea salt water, fishing out floating wheat seeds, and taking the wheat seeds which are settled at the bottom of the iodine-free sea salt water solution as effective seeds of crops. And respectively putting two effective seeds into two nylon nets, wherein each effective seed is 200g, and soaking the effective seeds in a 5% potassium permanganate solution for 30 minutes. Taking out the soaked effective seeds, washing and draining. And respectively putting clean water and a 20mg/L lanthanum chloride solution into the two nylon nets, and soaking the seeds for 24 hours in a sealed environment, wherein the clean water is used as a control group, and the lanthanum chloride solution is used as a treatment group. Taking out the nylon net, draining water, and putting the nylon net into a constant-temperature constant-pressure incubator for cultivation for 0, 6, 12 and 24 hours; and counting and recording the germination rate of the effective seeds in each time period. The seed soaking treatment with the clean water and the seed soaking treatment with the lanthanum chloride solution were repeated three times, respectively, to obtain table 10. As shown in Table 10, the germination rates of the wheat seeds soaked by the lanthanum chloride solution of 20mg/L in 6 hours, 12 hours and 24 hours are higher than those of the wheat seeds soaked by clear water, and the germination rate of the wheat seeds soaked by the lanthanum chloride solution in 24 hours reaches 85.1%, so that the lanthanum chloride solution is beneficial to improving the germination rate of the wheat seeds.

TABLE 10 influence of lanthanum chloride solution seed soaking on wheat seed germination (%) percentage

Treatment of	0 hour	6 hours	12 hours	24 hours
					Soaking seeds in clean water	0	4.7％	40.1％	79.6％
Soaking seeds with lanthanum chloride solution	0	5.9％	47.2％	85.1％

Example 11

The effective seeds of the Sichuan wheat 104 soaked in clear water and the effective seeds of the Sichuan wheat 104 soaked in 10mg/L lanthanum chloride solution and subjected to pregermination and white exposure are respectively sown in PVC cultivation planting buckets assembled with soil, 6 holes are planted in each planting bucket, and 5 effective seeds are planted in each hole. Set up control group (clear water is handled) and processing group (3mg/L lanthanum chloride solution is handled) respectively, control group and processing group are experimental to 9 PVC cultivation planting fill respectively, and wherein the effective seed that the white is revealed in the accelerating germination after the clear water seed soaking sets up to carry out the clear water to handle for the control group, and the effective seed that the white is revealed in the accelerating germination after the 10mg/L lanthanum chloride solution seed soaking sets up to handle the group and carry out the lanthanum chloride solution and handle. After the effective seeds emerge, wheat plants are formed, and the leaf surfaces of the wheat plants in the vegetative growth period and the jointing and booting period of the control group are sprayed with clear water, wherein the foliage of the wheat plants in the vegetative growth period and the jointing and booting period are sprayed once respectively; spraying a 3mg/L lanthanum chloride solution on leaf surfaces of wheat plants in a vegetative growth period and a jointing-removing and booting period, wherein the spraying is performed once in the vegetative growth period and the jointing-removing and booting period respectively; recording the indexes of the wheat plant such as the agronomic characters and the like in the whole growth period until the harvest and the yield measurement, wherein the growth period refers to the whole growth period of the crop. The experimental statistics were analyzed and recorded in table 11. As shown in table 11, the plant height, ear length, and ear grain number of the wheat plants treated with the lanthanum chloride solution were all greater than those of the control group, and the agronomic characteristics of the wheat plants treated with the lanthanum chloride solution were all superior to those of the control group, so that the lanthanum chloride solution was obtained, which was beneficial to improving the agronomic characteristics of wheat.

TABLE 11 influence of lanthanum chloride solution on agronomic performance of wheat

Treatment of	Plant height (cm)	Ear length (cm)	Grain number of spike (grain)
				Control group (clear water)	70.17±2.36	6.62±1.16	23.31±1.33
Treatment group (lanthanum chloride solution)	74.15±1.49	7.03±2.14	25.40±1.64

Example 12

And respectively sowing the effective seeds of the soaked Sichuan wheat 104 and the effective seeds of the Sichuan wheat 104 which are subjected to accelerating germination and are exposed to white after being soaked in a lanthanum chloride solution of 20mg/L into PVC cultivation planting buckets assembled with soil, wherein each planting bucket is planted with 6 holes, and each hole is planted with 5 effective seeds. Set up control group (clear water is handled) and processing group (5mg/L lanthanum chloride solution is handled) respectively, control group and processing group are experimental to 9 PVC cultivation planting fill respectively, and wherein the effective seed that the white is revealed in the pregermination after the clear water seed soaking sets up to carry out the clear water to handle for the control group, and the effective seed that the white is revealed in the pregermination after 20mg/L lanthanum chloride solution seed soaking sets up to handle the group and carry out the lanthanum chloride solution and handle. After the effective seeds emerge, wheat plants are formed, and the leaf surfaces of the wheat plants in the vegetative growth period and the jointing and booting period of the control group are sprayed with clear water, wherein the foliage of the wheat plants in the vegetative growth period and the jointing and booting period are sprayed once respectively; spraying 5mg/L lanthanum chloride solution to treat the leaf surfaces of wheat plants in a vegetative growth period and an elongation booting period, wherein the spraying is performed once in the vegetative growth period and the elongation booting period respectively; recording the indexes of the wheat plant such as the agronomic characters and the like in the whole growth period until the harvest and the yield measurement, wherein the growth period refers to the whole growth period of the crop. The experimental statistics were analyzed and recorded in table 12. As shown in table 12, the plant height, ear length, and ear number of the wheat plants treated with the lanthanum chloride solution were all greater than those of the control group, and the agronomic characteristics of the wheat plants treated with the lanthanum chloride solution were all better than those of the control group, so that the lanthanum chloride solution was obtained, which was beneficial to improving the agronomic characteristics of wheat.

TABLE 12 influence of lanthanum chloride solution on agronomic performance of wheat

Treatment of	Plant height (cm)	Ear length (cm)	Grain number of spike (grain)
				Control group (clear water)	70.17±2.36	6.62±1.16	23.31±1.33
Treatment group (rare earth liquid)	74.58±1.56	7.12±2.56	29.42±1.46

Example 13

The crop planted in this example 13 was rice. And (3) screening the seeds of the rice by using 10% iodine-free sea brine, and taking the rice seeds settled at the bottom of the iodine-free sea brine as effective seeds. Two equal effective seeds are put into a nylon net for tightening, and are respectively put into clean water and 2mg/L lanthanum chloride solution for soaking the seeds for 20 hours in a sealed environment. Taking out the nylon net with the effective seeds, draining, and putting into a constant-temperature constant-pressure incubator for cultivation for 0, 6, 12 and 24 hours; and counting and recording the germination rate of the effective seeds in each time period. The above treatments of soaking the seeds in clean water and soaking the seeds in the lanthanum chloride solution were repeated three times, respectively, to obtain Table 13. As shown in Table 13, the germination rates of the effective seeds soaked in the lanthanum chloride solution of 2mg/L in 6 hours, 12 hours and 24 hours are higher than those of the effective seeds soaked in clear water, and the germination rate of the seeds soaked in clear water in 24 hours reaches 96.7%, so that the lanthanum chloride solution is beneficial to improving the germination rate of the rice seeds.

TABLE 13 influence of lanthanum chloride solution seed soaking on the Rice seed Germination Rate (%)

Treatment of	0 hour	6 hours	12 hours	24 hours
					Soaking seeds in clean water	0	5.2％	32.7％	78.9％
Soaking seeds with lanthanum chloride solution	0	12.6％	51.3％	96.7％

Example 14

And respectively sowing the effective seeds of the rice which is subjected to germination acceleration and white exposure after being soaked in clear water and the effective seeds of the rice which is subjected to germination acceleration and white exposure after being soaked in a 2mg/L lanthanum chloride solution into PVC cultivation planting buckets which are provided with soil, and transplanting the effective seeds of 4 plants of rice into each PVC cultivation planting bucket. Set up control group (clear water is handled) and processing group (2mg/L lanthanum chloride solution is handled) respectively, control group and processing group are experimental to 9 PVC cultivation planting fill respectively, and wherein the effective seed of the rice that appears white that accelerates germination after the clear water seed soaking sets up to carry out the clear water to handle for the control group, and the effective seed of the rice that appears white that accelerates germination after the 2mg/L lanthanum chloride solution seed soaking sets up to handle the group and carry out the lanthanum chloride solution and handle. After the effective seeds emerge, rice plants are formed, and the leaf surfaces of the rice plants in the vegetative growth period and the jointing and booting period of a control group are sprayed with clear water, wherein the leaf surfaces of the rice plants in the vegetative growth period and the jointing and booting period are sprayed once respectively; and (3) spraying 2mg/L lanthanum chloride solution to treat leaf surfaces of rice plants in a vegetative growth period and an elongation booting period, wherein the spraying is performed once in the vegetative growth period and the elongation booting period respectively. Recording the indexes of the rice plant such as the agronomic characters and the like in the whole growth period until harvesting and yield measurement, wherein the growth period refers to the whole growth period of the crop and mainly comprises tillering, jointing, grouting and the like from birth to harvest. The experimental data were statistically analyzed and recorded in table 14. As shown in Table 14, the plant height, leaf length, tiller number, spike length and spike number of the rice plants treated by the lanthanum chloride solution are all larger than those of the control group, and the agronomic characters of the rice plants treated by the lanthanum chloride solution are all better than those of the control group, so that the lanthanum chloride solution is beneficial to improving the agronomic characters of the rice.

TABLE 14 influence of lanthanum chloride solution on agronomic characteristics of rice

Treatment of	Plant height (cm)	Leaf length (cm)	Tillering number (number)	Ear length (cm)	Ear number (number)
						Control group (clear water)	101.38±3.48	37.48±4.83	16.00±4.08	20.49±1.82	15.66±2.96
Treatment group (lanthanum chloride solution)	108.22±3.57	39.54±3.27	18.46±3.72	22.11±1.25	17.74±2.45

Example 15

The crop planted in this example 15 was corn. The corn seeds are screened by using 10 percent iodine-free sea brine, the floating corn seeds are fished out, and the corn seeds which are settled at the bottom of the iodine-free sea brine are used as effective seeds of crops. And respectively putting two effective seeds into two nylon nets, wherein each effective seed is 100 grains, respectively putting clean water and 2mg/L lanthanum chloride solution into the two nylon nets, and soaking the seeds for 20 hours in a sealed environment. Taking out the nylon net, draining, and putting into a constant-temperature and constant-pressure incubator for incubation for 0, 6, 12 and 24 hours; and counting and recording the germination rate of the effective seeds in each time period. The seed soaking treatment with the clean water and the seed soaking treatment with the lanthanum chloride solution were repeated three times, respectively, to obtain table 15. As shown in Table 15, the germination rates of the effective seeds of the corn soaked by the lanthanum chloride solution of 2mg/L in 6 hours, 12 hours and 24 hours are all higher than those of the effective seeds soaked by clear water, and the germination rate of the corn soaked by the lanthanum chloride solution of 24 hours reaches 89.9%, so that the lanthanum chloride solution is beneficial to improving the germination rate of the corn seeds.

TABLE 15 influence of lanthanum chloride solution seed soaking on the germination percentage (%) of corn seeds

Treatment of	0 hour	6 hours	12 hours	24 hours
					Soaking seeds in clean water	0	5.1％	28.9％	86.5％
Soaking seeds with lanthanum chloride solution	0	7.2％	31.7％	89.9％

Example 16

The effective seeds of the corn with the white color and the germination accelerating effect after the seeds are soaked in the clear water and the effective seeds of the corn with the white color and the germination accelerating effect after the seeds are soaked in the 2mg/L lanthanum chloride solution are respectively sown in the PVC cultivation planting buckets with the soil, 3 effective seeds are planted in each PVC cultivation planting bucket, the position where the effective seeds are placed is the center of each PVC cultivation planting bucket, and the planting depth of the effective seeds is 1 cm. Set up the contrast group respectively (the clear water is handled) and handle the group (2mg/L lanthanum chloride solution is handled), the contrast group is experimental to 4 PVC cultivation planting fill respectively with handling the group, and wherein the effective seed of maize that the white is revealed in the forced germination after the clear water seed soaking sets up to carry out the clear water to handle for the contrast group, and the effective seed of maize that the white is revealed in the forced germination after the 2mg/L lanthanum chloride solution seed soaking sets up to handle the group and carry out the lanthanum chloride solution and handle. The effective seeds emerge to form corn plants, and the corn plants in the vegetative growth period and the jointing and booting period in the control area are sprayed with clear water on the leaf surfaces of the corn plants, wherein the corn plants are sprayed once in the vegetative growth period and the jointing and booting period; spraying 2mg/L lanthanum chloride solution to the leaf surfaces of corn plants in a vegetative growth period and an elongation booting period, wherein the spraying is performed once in the vegetative growth period and the elongation booting period respectively; recording the indexes of agronomic characters and the like of the corn plants in the whole growth period until the harvest and yield measurement are carried out, wherein the growth period refers to the whole growth period of the crops. The experimental data were statistically analyzed and recorded in table 16. As shown in table 16, the plant height, leaf length, leaf width, and stem thickness of the corn plants treated with the lanthanum chloride solution were all greater than those of the control group, and the agronomic performance of the corn plants treated with the lanthanum chloride solution was superior to that of the control group, so that the lanthanum chloride solution was obtained, which was beneficial to improving the agronomic performance of the corn.

TABLE 16 influence of lanthanum chloride solution on agronomic performance of maize

Treatment of	Plant height (cm)	Leaf length (cm)	Leaf width (cm)	Stem diameter (mm)
					Control group (clear water)	196.54±2.83	74.18±2.45	9.72±1.23	75.44+1.36
Treatment group (lanthanum chloride solution)	201.57±3.85	77.82±1.36	10.23±3.14	81.51±3.45

Example 17

In this example 17, the crop is wheat, and Sichuan wheat 104 seeds are selected for planting. And (3) screening the seeds of the wheat by using 10% iodine-free sea salt water, fishing out the floating seeds of the wheat, and taking the seeds of the wheat which are settled at the bottom of the iodine-free sea salt water solution as effective seeds of crops. And respectively putting two parts of effective seeds into two nylon nets, wherein each part of effective seeds is 200g, and soaking the effective seeds in a 5% potassium permanganate solution for 30 minutes. Taking out the soaked effective seeds, washing and draining. Clean water and 2mg/L lanthanum chloride solution are respectively put into the two nylon nets, and the seeds are soaked for 20 hours in a sealed environment. Taking out the nylon net, draining water, and putting the nylon net into a constant-temperature constant-pressure incubator for cultivation for 0, 6, 12 and 24 hours; and counting and recording the germination rate of the effective seeds in each time period. The seed soaking treatment with the clean water and the seed soaking treatment with the lanthanum chloride solution were repeated three times, respectively, to obtain table 17. As shown in Table 17, the germination rates of the effective seeds soaked in the lanthanum chloride solution of 2mg/L in 6 hours, 12 hours and 24 hours are higher than those of the effective seeds soaked in clear water, and the germination rate of the seeds soaked in clear water in 24 hours reaches 83.8%, so that the lanthanum chloride solution is obtained, and the germination rate of the wheat seeds is favorably improved.

TABLE 17 influence of lanthanum chloride solution seed soaking on wheat seed germination (%) percentage

Treatment of	0 hour	6 hours	12 hours	24 hours
					Soaking seeds in clean water	0	4.2％	40.1％	79.6％
Soaking seeds with lanthanum chloride solution	0	5.4％	44.6％	83.8％

Example 18

The effective seeds of the Sichuan wheat 104 soaked in clear water and the effective seeds of the Sichuan wheat 104 soaked in 2mg/L lanthanum chloride solution and subjected to germination accelerating and white exposure are respectively sown in PVC cultivation planting buckets assembled with soil, 6 holes are planted in each planting bucket, and 5 effective seeds are planted in each hole. Set up the control group respectively (the clear water is handled) and handle the group (2mg/L lanthanum chloride solution is handled), the control group is experimental to 9 PVC cultivation planting fill respectively with handling the group, and wherein the effective seed that the white is revealed in the germination accelerating after the clear water seed soaking sets up to carry out the clear water to handle for the control group, and the effective seed that the white is revealed in the germination accelerating after the 2mg/L lanthanum chloride solution seed soaking sets up to handle the group and carry out the lanthanum chloride solution and handle. After the effective seeds emerge, wheat plants are formed, and the leaf surfaces of the wheat plants in the vegetative growth period and the jointing and booting period of the control group are sprayed with clear water, wherein the foliage of the wheat plants in the vegetative growth period and the jointing and booting period are sprayed once respectively; spraying 2mg/L lanthanum chloride solution to treat the leaf surfaces of wheat plants in a vegetative growth period and an elongation booting period, wherein the spraying is performed once in the vegetative growth period and the elongation booting period respectively; recording indexes such as agronomic characters and the like of the whole growth period of the wheat plant until harvest and yield measurement, wherein the growth period refers to the whole growth period of the crop. The experimental statistics were analyzed and recorded in table 18. As shown in table 18, the plant height, ear length, and ear grain number of the wheat plants treated with the lanthanum chloride solution were all greater than those of the control group, and the agronomic characteristics of the wheat plants treated with the lanthanum chloride solution were all superior to those of the control group, so that the lanthanum chloride solution was obtained, which was beneficial to improving the agronomic characteristics of wheat.

TABLE 18 influence of lanthanum chloride solution on agronomic performance of wheat

Treatment of	Plant height (cm)	Ear length (cm)	Grain number of spike (grain)
				Control group (clear water)	70.17±2.36	6.62±1.16	23.31±1.33
Treatment group (lanthanum chloride solution)	73.92±1.25	7.06±2.23	26.2±2.15

The present invention is not limited to the above-described embodiments, and various modifications and variations of the present invention are intended to be included within the scope of the claims and the equivalent technology of the present invention if they do not depart from the spirit and scope of the present invention.

Claims

1. A method for planting crops by utilizing lanthanum chloride is characterized by comprising the following steps:

the method comprises the following steps:

s2: culturing the soaked effective seeds;

2. The method for growing crops using lanthanum chloride as claimed in claim 1, wherein:

spraying a second lanthanum chloride solution once in the vegetative growth period in S2; and S3, spraying the second lanthanum chloride solution once on the liquid surface of the crops in the jointing and booting period.

3. The method for growing crops using lanthanum chloride as claimed in claim 1, wherein:

the concentration of the first lanthanum chloride solution is 2-20 mg/L.

4. The method for growing crops using lanthanum chloride as claimed in claim 1, wherein:

the concentration of the second lanthanum chloride solution is 2-5 mg/L.

5. The method for growing crops using lanthanum chloride as claimed in claim 1, wherein:

and S2, culturing the effective seeds under a constant temperature condition, and maintaining the temperature at 25-40 ℃.

6. The method for growing crops using lanthanum chloride according to claim 1, wherein:

and S2, culturing the effective seeds in a natural environment.

7. The lanthanum chloride planting method of claim 1, wherein:

before the effective seeds of the crops are soaked, the seeds of the crops are screened to obtain the effective seeds of the crops.

8. The lanthanum chloride planting method of claim 7, wherein:

seeds of crops are put into the iodine-free sea salt aqueous solution, and the seeds which are sunk at the bottom of the iodine-free sea salt aqueous solution are used as effective seeds of the crops.