A method for cultivating elaeagnus pungens introduced in north saline-alkali land

Abstract

The application discloses a kind of northern saline-alkali land introduction Ziziphus Jujuba var. Bungeana cultivation method, and the process of cultivation method includes: S01: in soil, the soil improvement is carried out to the modifier for spraying the modified cinnamic acid;S02: using winter warm type greenhouse heat preservation or heat preservation material is carried out heat preservation treatment to Ziziphus Jujuba var. Bungeana;S03: different seasons take different water management measures;The beneficial effect of the application is that southern Ziziphus Jujuba var. Bungeana has high survival rate after cultivation in northern alkaline soil.

Description

Technical Field

[0001] This invention belongs to the field of fruit tree cultivation technology, specifically relating to a method for cultivating hairy-leaved jujube introduced to saline-alkali land in northern China. Background Technology

[0002] The hairy jujube is an important economic crop. Its fruits are rich in vitamin C, carotene, riboflavin, crude protein, cellulose, amino acids, calcium, iron, potassium, phosphorus, zinc, magnesium and flavonoids. In addition to its high nutritional value, it also has the effects of enhancing immunity, protecting the liver, promoting digestion and protecting the cardiovascular system.

[0003] There are no reports, either domestically or internationally, of introducing hairy jujube to saline-alkali lands. Introducing hairy jujube, native to tropical regions and preferring acidic soils, to the warm temperate saline-alkali lands around the Bohai Sea in northern China is itself an innovation. The climate and soil conditions in northern China differ significantly from the native environment of hairy jujube. Ensuring its normal growth in saline-alkali soils and the low temperatures of northern China is a challenging issue. In-depth research is needed on developing efficient cultivation techniques and ecological adaptation mechanisms for hairy jujube suitable for saline-alkali lands, exploring soil improvement through orchard cover, and developing supporting water and fertilizer management techniques. The development and application of these technologies are of great significance for expanding the cultivation area of ​​hairy jujube, increasing the scale of the industry, and changing the layout of my country's fruit industry. To address existing problems, we propose a method for cultivating hairy jujube in northern saline-alkali lands.

[0004] The introduction of hairy-leaf jujube from the south to the north, and its adaptation from acidic to alkaline soils, has not only broadened its cultivation area and improved its adaptability and resilience, but also enriched the variety of fruit trees in northern China, providing farmers with new avenues for economic growth. Furthermore, it has promoted the exchange and advancement of agricultural technology. This is of great significance for increasing the variety of fruit trees in northern China and enriching the fruit market. Summary of the Invention

[0005] The purpose of this invention is to provide a method for cultivating hairy-leaved jujube in saline-alkali land in northern China, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A method for cultivating hairy-leaved jujube in saline-alkali land in northern China, the cultivation method comprising the following steps:

[0008] S01: Soil improvement by spraying an amendment containing modified cinnamic acid into the soil;

[0009] S02: Use winter-warm greenhouse insulation or insulation materials to insulate the hairy jujube trees;

[0010] S03: Different water management measures should be adopted in different seasons.

[0011] Preferably, the components of the modifier include, by weight ratio:

[0012] 5-10 parts of modified cinnamic acid;

[0013] 5-20 parts of putrescine;

[0014] 10-20 parts spermidine;

[0015] 2-5 parts spermine;

[0016] Brassinosteroids 3-6 parts;

[0017] 2-6 parts glycine betaine.

[0018] Preferably, the molecular formula of the modified cinnamic acid is:

[0019] .

[0020] Preferably, the preparation method of modified cinnamic acid includes:

[0021] T1: Prepare solution a by weight ratio of 3-4 parts titanium acetate, 2-8 parts alanine, and 90-130 parts water. Add solution a to the reaction vessel. After the reaction is complete, cool and filter. Remove distilled water from the filtrate to obtain the first crude product. Then, purify the first crude product by column chromatography and finally dry it under vacuum to obtain the intermediate product.

[0022] T2: Weigh 3-6 parts of intermediate product, 5-9 parts of cinnamic acid, 1-2 parts of benzophenone and 40-70 parts of water according to the weight ratio to prepare solution b. Add solution b to the reaction vessel. After the reaction is completed, cool and remove the distilled water by rotary evaporation to obtain the second crude product. Then, separate and purify the second crude product by column chromatography. Finally, vacuum dry to obtain modified cinnamic acid.

[0023] Preferably, the reaction conditions for T1 are a temperature of 60-100℃ and a time of 0.5-3h; the reaction conditions for T2 are 80-120℃ and a time of 1-4h.

[0024] Preferred method for preparing the modifier:

[0025] This involves adding modified cinnamic acid, putrescine, spermidine, spermine, brassinosteroids, glycine betaine, and water into an emulsifier for emulsification.

[0026] Preferably, the speed of the emulsifier is 500-1000 r / min, and the emulsification time is 10-30 min.

[0027] Preferred methods for soil improvement include:

[0028] S1: From June to August, apply well-rotted soybean meal or peanut meal to each jujube tree using hole application or circular trenching, along with an amendment; water thoroughly within 3 days after applying the amendment, and water a second time within 10 days;

[0029] S2: Retain or replant herbaceous plants in the jujube orchard to form a natural grassland;

[0030] S3: Cut the grass and cover it under the tree;

[0031] S4: In November, apply well-rotted cow manure, sheep manure, or other animal manure or finished organic fertilizer to the hairy jujube trees in trenches, then cover them with a layer of treated reed straw and spray with an amendment.

[0032] Preferably, in S1, the amount of soybean meal or peanut meal used is 1-2 kg / plant, and the amount of soil conditioner used is 20-35 g / plant; in S4, the amount of animal manure such as cow dung or sheep dung or finished organic fertilizer used is 1-1.5 tons / mu, the amount of reed straw used is 0.5-0.8 tons / mu, and the amount of soil conditioner used is 1.5-2 kg / plant.

[0033] Preferably, when implementing water management measures in step S3, the soil moisture content of jujube trees should not exceed 80% during the flowering and young fruit stages, and the trees should be thoroughly watered at the end of October.

[0034] Ideally, when watering jujube trees in spring, water only when the ground is dry, and when you do water, water thoroughly.

[0035] Preferably, the reed stalks are processed by cutting them into 20-30 cm long sections after harvesting, and soaking them in dihydrogen phosphate (excluding sodium dihydrogen phosphate and aluminum dihydrogen phosphate) for 48-36 hours, with the concentration of dihydrogen phosphate being 3.5-5.0%.

[0036] Preferably, the cultivation method also includes a disease and pest control process, which includes rust, anthracnose, aphids, and spider mites.

[0037] Preferably, the cultivation method also includes a pruning and shaping process, during which the main trunk or main branches are often heavily pruned in spring, removing 1 / 3 to 1 / 2 of the crown. At the same time, several strong buds or branches are selected from the main branches to be cultivated as new main branches.

[0038] Preferably, the cultivation method also includes a flowering period girdling process. The flowering period girdling process is carried out at the initial flowering stage of the hairy jujube, and the girdling is performed on a smooth part of the main trunk or main branch. The width of the girdling is 1 / 12 to 1 / 9 of the diameter of the jujube branch.

[0039] Preferably, the cultivation method also includes the process of pinching off the tips during the flowering period. The pinching position is above the 5-7 leaves of the new shoot, and the tip of the new shoot is pinched off using pruning shears or fingers.

[0040] Preferably, the cultivation method also includes a process of pinching off the tips in autumn, where the tips are pinched off from the excessively vigorous new branches of the jujube.

[0041] Compared with the prior art, the beneficial effect of the present invention is that the survival rate of Southern hairy jujube is high after being cultivated in alkaline soil in the north.

[0042] The technical solutions in the embodiments of the present invention will be clearly and completely described below. 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.

[0043] The planting site was chosen in Binzhou.

[0044] Example 1:

[0045] Preparation of the modifier:

[0046] T1: Prepare solution a by weight ratio of 3 parts titanium acetate, 2 parts alanine and 90 parts water. The reaction conditions are 60℃ and 0.5h. Add solution a to the reaction vessel. After the reaction is completed, cool and filter. Remove distilled water from the filtrate to obtain the first crude product. Then, purify the first crude product by column chromatography and finally dry it under vacuum to obtain the intermediate product.

[0047] T2: Weigh 3 parts of intermediate product, 5 parts of cinnamic acid, 1 part of benzophenone and 40 parts of water according to the weight ratio to prepare solution b. Add solution b to the reaction vessel and react at 80°C for 1 hour. After the reaction is completed, cool and remove the distilled water by rotary evaporation to obtain the second crude product. Then, separate and purify the second crude product by column chromatography and finally obtain modified cinnamic acid by vacuum drying.

[0048] T3: Add 5 parts modified cinnamic acid, 5 parts putrescine, 10 parts spermidine, 2 parts spermine, 3 parts brassinosteroids, 2 parts glycine betaine, and 40 parts water to an emulsifier and emulsify for 10 minutes at a speed of 500 r / min.

[0049] Treatment of reed stalks:

[0050] After harvesting the reed stalks, cut them into 20-centimeter-long sections and soak them in a 3.5% ammonium dihydrogen phosphate solution for 48 hours.

[0051] Cultivation of hairy jujube:

[0052] S1: In June, apply well-rotted soybean meal or peanut meal to each jujube tree by hole application or circular trenching, along with a soil conditioner. The dosage of soybean meal or peanut meal is 1 kg / tree, and the dosage of soil conditioner is 20 g / tree. Water thoroughly within 3 days after applying the soil conditioner, and water a second time within 10 days.

[0053] S2: Retain or replant herbaceous plants in the jujube orchard to form a natural grassland;

[0054] S3: Cut the grass and cover it under the tree;

[0055] S4: In November, apply well-rotted cow manure, sheep manure, or other animal manure or finished organic fertilizer to the hairy jujube trees in trenches. The amount of cow manure, sheep manure, or other animal manure or finished organic fertilizer is 1 ton / mu. Then cover with a layer of treated reed straw. The amount of reed straw is 0.8 tons / mu. Spray an amendment at a rate of 1.5 kg / tree.

[0056] In spring, prune the main trunk or branches heavily, cutting off one-third of the crown. At the same time, select several strong buds or branches on the main trunk and branches to cultivate as new main branches. When watering jujube trees in spring, water only when the ground is dry, and when you do water, water thoroughly.

[0057] During the flowering period, the soil moisture content should be 50%. The hairy jujube should be pinched and girdled. The pinching position should be above the 5 leaves of the new shoot, and the tip of the new shoot should be pinched off with pruning shears or fingers. Girdling should be carried out at the beginning of the flowering period of the hairy jujube, and the girdling should be carried out on a smooth part of the main trunk or main branch. The width of the girdling is 1 / 12 of the diameter of the jujube branch.

[0058] In autumn, the soil moisture content during the young fruit stage is 40%, but it is necessary to water thoroughly at the end of October and pinch off the tips of the hairy jujube. The tip pinching process in autumn targets the excessively vigorous new branches of the hairy jujube.

[0059] In winter, jujube trees are kept warm by using winter-warm greenhouses or insulation materials.

[0060] Example 2:

[0061] Preparation of the modifier:

[0062] T1: Prepare solution a by weight ratio of 4 parts titanium acetate, 8 parts alanine and 130 parts water. The reaction conditions are 100℃ and 3h. Add solution a to the reaction vessel. After the reaction is completed, cool and filter. Remove distilled water from the filtrate to obtain the first crude product. Then, purify the first crude product by column chromatography and finally dry it under vacuum to obtain the intermediate product.

[0063] T2: Weigh 6 parts of intermediate product, 9 parts of cinnamic acid, 2 parts of benzophenone and 70 parts of water according to the weight ratio to prepare solution b. Add solution b to the reaction vessel and react at 120℃ for 4 hours. After the reaction is completed, cool and remove the distilled water by rotary evaporation to obtain the second crude product. Then, separate and purify the second crude product by column chromatography and finally obtain modified cinnamic acid by vacuum drying.

[0064] Treatment of reed stalks:

[0065] After harvesting the reed stalks, cut them into 30 cm long sections and soak them in a 5.0% magnesium dihydrogen phosphate solution for 36 hours.

[0066] Cultivation of hairy jujube:

[0067] S1: In August, apply well-rotted soybean meal or peanut meal to each jujube tree by hole application or circular trench application, along with a soil conditioner. The amount of soybean meal or peanut meal used is 2 kg / tree, and the amount of soil conditioner used is 35 g / tree. Water thoroughly once within 3 days after applying the soil conditioner, and water a second time within 10 days.

[0068] S2: Retain or replant herbaceous plants in the jujube orchard to form a natural grassland;

[0069] S3: Cut the grass and cover it under the tree;

[0070] S4: In November, apply well-rotted cow manure, sheep manure, or other animal manure or finished organic fertilizer to the hairy jujube trees in trenches. The amount of cow manure, sheep manure, or other animal manure or finished organic fertilizer is 1.5 tons / mu. Then cover with a layer of treated reed straw. The amount of reed straw is 0.5 tons / mu. Spray an amendment at a rate of 2 kg / tree.

[0071] In spring, prune the main trunk or branches heavily, cutting off half of the crown. At the same time, select several strong buds or branches on the main trunk and branches to cultivate as new main branches. When watering jujube trees in spring, water only when the ground is dry, and when you do water, water thoroughly.

[0072] During the flowering period, the soil moisture content should be 60%. The hairy jujube should be pinched and girdled. The pinching position should be above the 7 leaves of the new shoot, and the tip of the new shoot should be pinched off with pruning shears or fingers. Girdling should be carried out at the beginning of the flowering period of the hairy jujube, and the girdling should be carried out on a smooth part of the main trunk or main branch. The width of the girdling is 1 / 9 of the diameter of the jujube branch.

[0073] In autumn, the soil moisture content during the young fruit stage is 70%, but it is necessary to water thoroughly at the end of October and pinch off the tips of the hairy jujube. The tip pinching process in autumn targets the excessively vigorous new branches of the hairy jujube.

[0074] In winter, jujube trees are kept warm by using winter-warm greenhouses or insulation materials.

[0075] Example 3:

[0076] Preparation of the modifier:

[0077] T1: Prepare solution a by weight ratio of 3.5 parts titanium acetate, 4 parts alanine and 100 parts water. The reaction conditions are 80℃ and 2h. Add solution a to the reaction vessel. After the reaction is completed, cool and filter. Remove distilled water from the filtrate to obtain the first crude product. Then, purify the first crude product by column chromatography and finally dry it under vacuum to obtain the intermediate product.

[0078] T2: Weigh 4 parts of intermediate product, 6 parts of cinnamic acid, 1.2 parts of benzophenone and 50 parts of water according to the weight ratio to prepare solution b. Add solution b to the reaction vessel and react at 110℃ for 2 hours. After the reaction is completed, cool and remove the distilled water by rotary evaporation to obtain the second crude product. Then, separate and purify the second crude product by column chromatography and finally obtain modified cinnamic acid by vacuum drying.

[0079] T3: Add 7 parts modified cinnamic acid, 6 parts putrescine, 15 parts spermidine, 3 parts spermine, 4 parts brassinosteroids, 4 parts glycine betaine, and 50 parts water to an emulsifier and emulsify for 16 minutes at a speed of 800 r / min.

[0080] Treatment of reed stalks:

[0081] After harvesting the reed stalks, cut them into 25 cm long sections and soak them in a 4% potassium dihydrogen phosphate solution for 40 hours.

[0082] Cultivation of hairy jujube:

[0083] S1: In July, apply well-rotted soybean meal or peanut meal to each jujube tree by hole application or circular trenching, along with a soil conditioner. The dosage of soybean meal or peanut meal is 1.5 kg / tree, and the dosage of soil conditioner is 25 g / tree. Water thoroughly within 3 days after applying the soil conditioner, and water a second time within 10 days.

[0084] S2: Retain or replant herbaceous plants in the jujube orchard to form a natural grassland;

[0085] S3: Cut the grass and cover it under the tree;

[0086] S4: In November, apply well-rotted cow manure, sheep manure, or other animal manure or finished organic fertilizer to the hairy jujube trees in trenches. The amount of cow manure, sheep manure, or other animal manure or finished organic fertilizer is 1.2 tons / mu. Then cover with a layer of treated reed straw. The amount of reed straw is 0.6 tons / mu. Spray an amendment at a rate of 1.8 kg / tree.

[0087] In spring, prune the main trunk or branches heavily, removing 2 / 5 of the crown. At the same time, select several strong buds or branches on the main trunk and branches to cultivate as new main branches. When watering jujube trees in spring, water only when the ground is dry, and when you do water, water thoroughly.

[0088] During the flowering period, the soil moisture content should be 80%. The hairy jujube should be pinched and girdled. The pinching position should be above the 6 leaves of the new shoot, and the tip of the new shoot should be pinched off with pruning shears or fingers. Girdling should be carried out at the beginning of the flowering period of the hairy jujube, and the girdling should be carried out on a smooth part of the main trunk or main branch. The width of the girdling is 1 / 10 of the diameter of the jujube branch.

[0089] In autumn, the soil moisture content is 80% during the young fruit stage. However, it is necessary to water thoroughly at the end of October and pinch off the tips of the hairy jujube. The tip pinching process in autumn targets the excessively vigorous new branches of the hairy jujube.

[0090] In winter, jujube trees are kept warm by using winter-warm greenhouses or insulation materials.

[0091] Comparative Example 1:

[0092] Preparation of modifier:

[0093] Add 7 parts cinnamic acid, 6 parts putrescine, 15 parts spermidine, 3 parts spermine, 4 parts brassinosteroids, 4 parts glycine betaine, and 50 parts water to an emulsifier according to the weight ratio, and emulsify at 800 rpm for 16 minutes.

[0094] Treatment of reed stalks:

[0095] After harvesting the reed stalks, cut them into 25 cm long sections and soak them in a 4% potassium dihydrogen phosphate solution for 40 hours.

[0096] Cultivation of hairy jujube:

[0097] S1: In July, apply well-rotted soybean meal or peanut meal to each jujube tree by hole application or circular trenching, along with a soil conditioner. The dosage of soybean meal or peanut meal is 1.5 kg / tree, and the dosage of soil conditioner is 25 g / tree. Water thoroughly within 3 days after applying the soil conditioner, and water a second time within 10 days.

[0098] S2: Retain or replant herbaceous plants in the jujube orchard to form a natural grassland;

[0099] S3: Cut the grass and cover it under the tree;

[0100] S4: In November, apply well-rotted cow manure, sheep manure, or other animal manure or finished organic fertilizer to the hairy jujube trees in trenches. The amount of cow manure, sheep manure, or other animal manure or finished organic fertilizer is 1.2 tons / mu. Then cover with a layer of treated reed straw. The amount of reed straw is 0.6 tons / mu. Spray an amendment at a rate of 1.8 kg / tree.

[0101] In spring, prune the main trunk or branches heavily, removing 2 / 5 of the crown. At the same time, select several strong buds or branches on the main trunk and branches to cultivate as new main branches. When watering jujube trees in spring, water only when the ground is dry, and when you do water, water thoroughly.

[0102] During the flowering period, the soil moisture content should be 80%. The hairy jujube should be pinched and girdled. The pinching position should be above the 6 leaves of the new shoot, and the tip of the new shoot should be pinched off with pruning shears or fingers. Girdling should be carried out at the beginning of the flowering period of the hairy jujube, and the girdling should be carried out on a smooth part of the main trunk or main branch. The width of the girdling is 1 / 10 of the diameter of the jujube branch.

[0103] In autumn, the soil moisture content is 80% during the young fruit stage. However, it is necessary to water thoroughly at the end of October and pinch off the tips of the hairy jujube. The tip pinching process in autumn targets the excessively vigorous new branches of the hairy jujube.

[0104] In winter, jujube trees are kept warm by using winter-warm greenhouses or insulation materials.

[0105] Comparative Example 2:

[0106] Add 6 parts putrescine, 15 parts spermidine, 3 parts spermine, 4 parts brassinosteroids, 4 parts glycine betaine, and 50 parts water to an emulsifier according to the following weight ratio. Emulsify at 800 rpm for 16 minutes.

[0107] Treatment of reed stalks:

[0108] After harvesting the reed stalks, cut them into 25 cm long sections and soak them in a 4% potassium dihydrogen phosphate solution for 40 hours.

[0109] Cultivation of hairy jujube:

[0110] S1: In July, apply well-rotted soybean meal or peanut meal to each jujube tree by hole application or circular trenching, along with a soil conditioner. The dosage of soybean meal or peanut meal is 1.5 kg / tree, and the dosage of soil conditioner is 25 g / tree. Water thoroughly within 3 days after applying the soil conditioner, and water a second time within 10 days.

[0111] S2: Retain or replant herbaceous plants in the jujube orchard to form a natural grassland;

[0112] S3: Cut the grass and cover it under the tree;

[0113] S4: In November, apply well-rotted cow manure, sheep manure, or other animal manure or finished organic fertilizer to the hairy jujube trees in trenches. The amount of cow manure, sheep manure, or other animal manure or finished organic fertilizer is 1.2 tons / mu. Then cover with a layer of treated reed straw. The amount of reed straw is 0.6 tons / mu. Spray an amendment at a rate of 1.8 kg / tree.

[0114] In spring, prune the main trunk or branches heavily, removing 2 / 5 of the crown. At the same time, select several strong buds or branches on the main trunk and branches to cultivate as new main branches. When watering jujube trees in spring, water only when the ground is dry, and when you do water, water thoroughly.

[0115] During the flowering period, the soil moisture content should be 80%. The hairy jujube should be pinched and girdled. The pinching position should be above the 6 leaves of the new shoot, and the tip of the new shoot should be pinched off with pruning shears or fingers. Girdling should be carried out at the beginning of the flowering period of the hairy jujube, and the girdling should be carried out on a smooth part of the main trunk or main branch. The width of the girdling is 1 / 10 of the diameter of the jujube branch.

[0116] In autumn, the soil moisture content is 80% during the young fruit stage. However, it is necessary to water thoroughly at the end of October and pinch off the tips of the hairy jujube. The tip pinching process in autumn targets the excessively vigorous new branches of the hairy jujube.

[0117] In winter, jujube trees are kept warm by using winter-warm greenhouses or insulation materials.

[0118] Comparative Example 3:

[0119] Add 6 parts putrescine, 15 parts spermidine, 3 parts spermine, 4 parts brassinosteroids, 4 parts glycine betaine, and 50 parts water to an emulsifier according to the following weight ratio. Emulsify at 800 rpm for 16 minutes.

[0120] Cultivation of hairy jujube:

[0121] S1: In July, apply well-rotted soybean meal or peanut meal to each jujube tree by hole application or circular trenching, along with a soil conditioner. The dosage of soybean meal or peanut meal is 1.5 kg / tree, and the dosage of soil conditioner is 25 g / tree. Water thoroughly within 3 days after applying the soil conditioner, and water a second time within 10 days.

[0122] S2: Retain or replant herbaceous plants in the jujube orchard to form a natural grassland;

[0123] S3: Cut the grass and cover it under the tree;

[0124] S4: In November, apply well-rotted cow manure, sheep manure, or other animal manure or finished organic fertilizer to the hairy jujube trees in trenches. The amount of cow manure, sheep manure, or other animal manure or finished organic fertilizer is 1.2 tons / mu, and an amendment is sprayed at a rate of 1.8 kg / tree.

[0125] In spring, prune the main trunk or branches heavily, removing 2 / 5 of the crown. At the same time, select several strong buds or branches on the main trunk and branches to cultivate as new main branches. When watering jujube trees in spring, water only when the ground is dry, and when you do water, water thoroughly.

[0126] During the flowering period, the soil moisture content should be 80%. The hairy jujube should be pinched and girdled. The pinching position should be above the 6 leaves of the new shoot, and the tip of the new shoot should be pinched off with pruning shears or fingers. Girdling should be carried out at the beginning of the flowering period of the hairy jujube, and the girdling should be carried out on a smooth part of the main trunk or main branch. The width of the girdling is 1 / 10 of the diameter of the jujube branch.

[0127] In autumn, the soil moisture content is 80% during the young fruit stage. However, it is necessary to water thoroughly at the end of October and pinch off the tips of the hairy jujube. The tip pinching process in autumn targets the excessively vigorous new branches of the hairy jujube.

[0128] In winter, jujube trees are kept warm by using winter-warm greenhouses or insulation materials.

[0129] Five groups of jujube trees with 20 trees in each group were collected in Binzhou, Shandong Province, and cultivated using the methods of Examples 1-3 and Comparative Examples 1-3. Examples 1-3 and Comparative Examples 1-2 were identical in management practices except for the application of the plant growth regulator. Comparative Example 3 was identical to Comparative Example 2 except that reeds were not used. After the experiment, the condition of each tree was observed, and the survival rate was calculated.

[0130] Table 1 Cultivation Results

[0131]

[0132] As can be seen from the results in Table 1, the survival rates of Examples 1 to 3 were all above 80%, with Examples 1 and 2 reaching above 90%.

[0133] A comparison of Examples 1-3 and Comparative Example 1 shows that the survival rate of Comparative Example 1 is significantly lower than that of Examples 1, 2 and 3.

[0134] A comparison of Examples 1-3 and Comparative Example 2 shows that the survival rate of Comparative Example 2 is significantly lower than that of Examples 1, 2 and 3.

[0135] A comparison of Example 2 and Comparative Example 3 shows that the survival rate of Comparative Example 3 is 50% lower than that of the Comparative Example.

[0136] Although embodiments of the invention have been shown and described (see the detailed description above), 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 method for cultivating hairy-leaved jujube in saline-alkali land in northern China, characterized by: The process of the cultivation method comprises: S01: applying a modifier comprising modified cinnamic acid to the soil to improve the soil; S02: applying heat preservation to the Zizyphus jujuba var. spinosus using a winter-warm type greenhouse or heat preservation materials; S03: taking different water management measures in different seasons; The components of the modifier comprise, by weight ratio, 5-10 parts of modified cinnamic acid, 5-20 parts of putrescine, 10-20 parts of spermidine, 2-5 parts of spermine, 3-6 parts of brassinosteroids, and 2-6 parts of glycine betaine; The molecular formula of the modified cinnamic acid is: ； The preparation method of the modified cinnamic acid comprises: T1: preparing solution a by mixing 3-4 parts of titanium acetate, 2-8 parts of alanine, and 90-130 parts of water, and then pouring the solution a into a reaction kettle, cooling and filtering after the reaction is completed to obtain a first crude product, purifying the first crude product, and finally vacuum drying to obtain an intermediate product; T2: preparing solution b by mixing 3-6 parts of the intermediate product, 5-9 parts of cinnamic acid, 1-2 parts of benzophenone, and 40-70 parts of water, and then pouring the solution b into a reaction kettle, obtaining a second crude product after the reaction is completed, purifying the second crude product, and finally vacuum drying to obtain the modified cinnamic acid.

2. The method for cultivating Ziziphus jujuba Mill. var. spinulosa (Bunge) Huq according to claim 1, characterized in that: The reaction conditions of T1 are a temperature of 60-100°C and a time of 0.5-3h; and the reaction conditions of T2 are a temperature of 80-120°C and a time of 1-4h.

3. The method according to claim 1, wherein the method is characterized by the following steps: The soil improvement method comprises: S1: applying composted soybean meal or peanut meal to each Zizyphus jujuba var. spinosus by hole application or ring-shaped ditch application while adding the modifier from June to August; pouring water once after applying the modifier, and pouring water again within 10 days; S2: retaining or replanting herbaceous plants in the jujube garden to form a natural grassland; S3: mowing the grass and covering it under the trees; S4: applying composted animal manure or finished organic fertilizer to the Zizyphus jujuba var. spinosus by ditch application in November, covering a layer of treated reed straw, and spraying the modifier.

4. The method for cultivating hairy-leaved jujube in northern saline-alkali land according to claim 3, characterized in that: The use amount of the soybean meal or peanut meal in S1 is 1-2 kg per plant, and the use amount of the modifier is 20-35 g per plant; The use amount of the animal manure or finished organic fertilizer in S4 is 1-1.5 tons per mu, the use amount of the reed straw is 0.5-0.8 tons per mu, and the use amount of the modifier is 1.5-2 kg per plant.

5. The method according to claim 1, wherein the method is characterized in that: When the water management measure is taken in step S3, the soil water content of the jujube trees is not more than 80% during the flowering and young fruiting periods, and the soil is poured with water at the end of October.

6. The method according to claim 1, wherein the method is characterized in that: When the jujube trees are poured with water in spring, the ground is not poured with water when it is not dry, and the ground is poured with water when it is dry.

7. The method for cultivating hairy-leaved jujube in northern saline-alkali land according to claim 3, characterized in that: The treatment method of the reed straw comprises cutting the reed straw into segments with a length of 20-30 cm after harvesting the reed straw, and immersing the reed straw in a dihydrogen phosphate salt free of sodium dihydrogen phosphate and aluminum dihydrogen phosphate for 48-36 hours, and the concentration of the dihydrogen phosphate salt is 3.5-5.0%.

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