Fresh feeding corn planting method, feed, application of feed and feeding method

Abstract

The invention provides a planting method and feed of fresh-fed corn and application and feeding method of the feed, and the planting method of the fresh-fed corn is characterized by comprising the following steps: building a greenhouse; natural sand is used as a planting substrate; nutrition required by planting is provided through a nutrient solution circulating irrigation technology; and the temperature required by planting is provided through photovoltaic power generation. According to the fresh feeding corn planting method, natural sand serves as a planting substrate, planting nutrition is provided through a nutrient solution circulating irrigation technology, photovoltaic power generation heating and greenhouse planting technologies are combined, the optimal growth condition of corn can be guaranteed, and annual efficient production of feeding corn in the Tibet region is achieved by effectively utilizing an automatic environment control technology; fresh pasture is continuously provided for livestock such as yaks, and the problems of serious pasture shortage, out-of-season pasture production and pasture annual stable supply are solved.

Description

Technical Field

[0001] This application belongs to the technical field of feeds, and particularly relates to a planting method of fresh forage corn, a feed, its application, and a feeding method. Background Art

[0002] At present, there is a large gap between the development of China's animal husbandry and that of foreign countries. In addition to problems such as being restricted by others in major varieties and prominent issues in animal disease prevention and control, another important bottleneck is the serious shortage of feed and forage resources. The external dependence on protein raw materials is as high as 75%. About 100 million tons of soybeans are imported annually, and the breeding cost is 40 - 50% higher than that of developed countries. According to the "Research on the Development Strategy of China's Aquaculture in 2050" by the Chinese Academy of Engineering, the gap in protein feeds such as soybeans will exceed 107 million tons in 2025 and exceed 124 million tons in 2035. China raises 1 / 5 of the world's sheep and 1 / 11 of the world's cattle, with a large demand for forage.

[0003] In addition, in 2021, the Ministry of Agriculture and Rural Affairs of the People's Republic of China issued the "Work Plan for Reducing and Substituting Corn and Soybean Meal in Feeds", recommending the use of plant-based protein raw materials with regional characteristics to promote the reduction and substitution of soybean meal.

[0004] Therefore, there is an urgent need for a feed with low feeding cost and high plant-based protein content. Summary of the Invention

[0005] In view of this, one object of this application is to provide a planting method of fresh forage corn and a feed. By using natural sand as the planting substrate, providing planting nutrition through the nutrient solution circulation irrigation technology, and combining photovoltaic power generation for heating and greenhouse planting technology, it can ensure the best growth conditions for corn, effectively utilize the automatic environmental control technology to achieve the annual high-efficiency production of forage corn in Tibet, and continuously provide fresh forage for livestock such as yaks, so as to solve the problems of serious shortage of forage, off-season forage production, and stable annual supply of forage.

[0006] Another object of this application is to provide a feed.

[0007] Another object of this application is to provide an application of a feed.

[0008] Another object of this application is to provide a feeding method.

[0009] To achieve the above object, the first aspect embodiment of this application proposes a planting method of fresh forage corn, which is characterized by including:

[0010] Constructing a greenhouse;

[0011] Using natural sand as the planting substrate;

[0012] Providing the required nutrition for planting through the nutrient solution circulation irrigation technology;

[0013] Provide the temperature required for planting through photovoltaic power generation.

[0014] In some embodiments, the method for planting fresh forage corn further includes:

[0015] During the milk ripening stage to the large trumpet mouth stage, cut off the part above the ground of the grass corn at the ground level to obtain fresh forage corn.

[0016] To achieve the above object, an embodiment of the second aspect of the present application provides a feed, including roughage and concentrate. The roughage includes oat grass, whole-plant corn silage and fresh forage corn, and the concentrate includes corn, wheat bran, soybean meal, rapeseed meal, corn distillers grains, calcium carbonate, calcium hydrogen phosphate, feed-grade sodium chloride, baking soda, premix.

[0017] In some embodiments, the fresh forage corn is the part above the ground of the grass corn cut during the milk ripening stage to the large trumpet mouth stage.

[0018] In some embodiments, the whole-plant corn silage is a product obtained by fermenting and ensiling the part above the ground of the grass corn cut during the milk ripening stage to the large trumpet mouth stage.

[0019] In some embodiments, the mass ratio of the roughage to the concentrate is (10 - 16):(2 - 3).

[0020] In some embodiments, the mass ratio of the oat grass, the whole-plant corn silage and the fresh forage corn is (1.5 - 2.5):(3.75 - 6.25):(4.5 - 7.5).

[0021] In some embodiments, the mass ratio of the roughage to the concentrate is 13:2.5.

[0022] In some embodiments, the mass ratio of the oat grass, the whole-plant corn silage and the fresh forage corn is 2:5:6.

[0023] In some embodiments, the premix includes the following components in mass percentages: 10 - 25% baking soda, 15 - 23% table salt, 8 - 15% calcium hydrogen phosphate, 5 - 9% rice bran, 2 - 8% yak multi-minerals, 2 - 6% sodium sulfate, 0.2 - 2% yak multi-vitamins, 0.5 - 1.5% sweetener, 0.5 - 1% 20wt% monensin, 1 - 3% anti-putrefactive probiotic, 0.2 - 0.6% flavoring agent, and the balance is stone powder.

[0024] In some embodiments, the concentrate feed comprises the following components in parts by weight: 50 - 70 parts of corn, 6.4 - 9.6 parts of wheat bran, 9.6 - 14.4 parts of soybean meal, 5.6 - 8.4 parts of rapeseed meal, 6.4 - 9.6 parts of corn distillers grains, 1.2 - 1.8 parts of calcium carbonate, 0.4 - 0.6 parts of dicalcium phosphate, 0.4 - 0.6 parts of feed-grade sodium chloride, 1.2 - 1.8 parts of baking soda, and 0.8 - 1.2 parts of premix.

[0025] In some embodiments, the concentrate feed comprises the following components in parts by weight: 60 parts of corn, 8 parts of wheat bran, 12 parts of soybean meal, 7 parts of rapeseed meal, 8 parts of corn distillers grains, 1.5 parts of calcium carbonate, 0.5 parts of dicalcium phosphate, 0.5 parts of feed-grade sodium chloride, 1.5 parts of baking soda, and 1 part of premix.

[0026] To achieve the above object, the embodiments of the third aspect of the present application relate to the application of the fresh forage corn obtained by the planting method of the fresh forage corn of the embodiments of the present application or the feed of the embodiments of the present application in yak feeding.

[0027] To achieve the above object, the embodiments of the fourth aspect of the present application provide a feeding method, including:

[0028] Feeding yaks with the feed as in the embodiments of the present application, wherein the feeding amount of the roughage is 10 - 16 kg / head / day, and the feeding amount of the concentrate feed is 2 - 3 kg / head / day.

[0029] In some embodiments, the feeding amount of the roughage is 13 kg / head / day, and the feeding amount of the concentrate feed is 2.5 kg / head / day.

[0030] The planting method of the fresh forage corn of the embodiments of the present application can at least bring the following beneficial effects:

[0031] By using natural sand as the planting substrate, providing planting nutrition through the nutrient solution circulation irrigation technology, and combining photovoltaic power generation for heating and greenhouse planting technology, the optimal growth conditions of corn can be guaranteed, and the automatic environmental control technology can be effectively used to achieve the annual high-efficient production of forage corn in Tibet, continuously providing fresh forage for livestock such as yaks, so as to solve the problems of serious shortage of forage, off-season forage production, and stable annual supply of forage.

[0032] The feed of the embodiments of the present application can at least bring the following beneficial effects:

[0033] Using fresh forage corn as the main component of the roughage can reduce the feeding cost. At the same time, the reasonable design of the composition of the roughage and the concentrate feed makes the overall plant protein content of the feed high.

[0034] The additional aspects and advantages of the present application will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present application. Detailed Embodiments

[0035] The embodiments of the present application will be described in detail below. The embodiments are exemplary and are intended to explain the present application, and should not be construed as a limitation to the present application.

[0036] In the application, the disclosure of a numerical range includes the disclosure of all values within the entire range and further sub-ranges, including the endpoints and sub-ranges given for these ranges.

[0037] In the application, the raw materials, equipment, etc. involved, unless otherwise specified, are raw materials and equipment that can be obtained through commercial channels or made by known methods; the methods involved, unless otherwise specified, are conventional methods.

[0038] The inventors found that fresh corn forage (i.e., the fresh forage corn of the present application) has the following advantages:

[0039] 1. High water content, tender and juicy. The water content of fresh corn forage is generally 75 - 90 wt%.

[0040] 2. Rich in protein and good in quality. The crude protein content of gramineous forage and leafy vegetable feeds (fresh weight) is between 1.5 - 3.0 wt%, and that of leguminous forage is between 3.2 - 4.4 wt%. Calculated on a dry matter basis, the crude protein content in fresh corn forage is even more than that in gramineous seeds. The crude protein content of forage corn can reach 13.8 - 17 wt%. Moreover, the amino acid composition contained in fresh corn forage is also better than that in gramineous seeds, especially the contents of lysine and tryptophan are relatively high.

[0041] 3. Low crude fiber content. The crude fiber content of young fresh corn forage is low, and the nitrogen-free extract content is high. Based on dry matter, the crude fiber content is 15 - 30 wt%, and the nitrogen-free extract is 40 - 50 wt%. The crude fiber content increases with the extension of the plant growth period. Generally speaking, before the plant blossoms or heads, the crude fiber content is low.

[0042] 4. Rich in minerals, calcium and phosphorus, and in appropriate proportion. The contents of essential elements such as iron, zinc, and copper in fresh corn forage are relatively high, rich in calcium and phosphorus. If it is utilized before the plant blossoms or heads, the digestibility is high.

[0043] 5. Rich in various vitamins. Fresh corn forage is the main source of vitamins for livestock and poultry, and can provide livestock and poultry with rich vitamins such as vitamin B, vitamin C, vitamin E, vitamin K, and carotene. In addition, young fresh forage is soft, juicy, good in palatability, and also contains various enzymes, hormones, and organic acids, which are easy to digest.

[0044] 6. Good palatability and high digestibility. Fresh corn forage is soft, juicy, and low in fiber content. It contains various enzymes, hormones, and organic acids, making it easy to digest and having good palatability. It is one of the indispensable feed sources for herbivorous livestock. Green grass corn is a feed with relatively balanced nutrition. Adding a certain amount of green grass corn to the diet can improve the utilization rate of the diet.

[0045] Therefore, adding fresh corn forage (i.e., the fresh forage corn of the present application) to the feed can significantly improve the nutritional components of the feed and reduce the feeding cost.

[0046] The following specifically describes the planting method, feed, feeding method, etc. of the fresh forage corn in the embodiments of the present application.

[0047] The planting method of the fresh forage corn in the embodiments of the present application includes:

[0048] Constructing a greenhouse;

[0049] Using natural sand as the planting substrate;

[0050] Providing the nutrients required for planting through the nutrient solution circulation irrigation technology;

[0051] Providing the temperature required for planting through photovoltaic power generation.

[0052] In some embodiments, the material of the greenhouse includes but is not limited to at least one of steel structure, PO film, non-woven fabric, PE cloth, 5T foam, space cotton, flower felt, etc.

[0053] It should be noted that when the material of the greenhouse is two or more of steel structure, PO film, non-woven fabric, PE cloth, 5T foam, space cotton, flower felt, etc., it can be a composite material layer of these materials.

[0054] Natural sand is formed by the action of natural conditions (mainly rock weathering), and is rock particles with a particle size of less than 5 mm, including natural sea sand, lake sand, river sand, or crushed stone sand (i.e., minerals are naturally split into fine sand grains).

[0055] In some embodiments, the average particle size of the natural sand is 2 - 5 mm.

[0056] In some embodiments, the natural sand includes at least one of yellow sand, river sand, gobi sand, etc.

[0057] In some embodiments, the laying thickness of the natural sand is 30 - 70 cm.

[0058] As an alternative example, the nutrient solution involved in the nutrient solution irrigation technology includes water-soluble fertilizers of macronutrients, water-soluble fertilizers of medium nutrients, urea, potassium dihydrogen phosphate, etc., where: the water-soluble fertilizer of macronutrients is 2000 g per ton of water, the water-soluble fertilizer of medium nutrients is 800 g per ton of water, urea is 250 g per ton of water, and potassium dihydrogen phosphate is 250 g per ton of water.

[0059] In some embodiments, the planting conditions of fresh forage corn include: soil temperature of 16°C - 30°C, soil humidity of 26% - 35%, air temperature of 26°C - 38°C, and air humidity of 15% - 90%.

[0060] In some embodiments, the fresh forage corn is green grass corn.

[0061] In some embodiments, the planting method of fresh forage corn further includes the step of harvesting the corn from the milk ripening stage to the large trumpet stage.

[0062] In the embodiments of the present application, the milk ripening stage to the large trumpet stage is determined as the suitable harvesting period, which can ensure the quality of green grass corn. It is one crop every 45 days and 8 crops a year. When the cultivated green grass corn is in the milk ripening stage to the large trumpet stage (about 1.5 meters high), all the above-ground parts such as the corn stalks and corn bracts are cut at the ground level, and then part of it is used as fresh forage corn and part of it is fermented and ensiled to form whole-plant corn silage. The fresh forage corn and whole-plant corn silage can be mixed with oat grass to form roughage, and concentrate feed is formulated according to the required nutrient components. There is no fresh grass in the existing concentrated supplementary feeding formulas in Tibet, and the cost reduction of fattening yaks is the most obvious after adding the fresh grass formula.

[0063] It should be noted that in the embodiments of the present application, when the above-mentioned fresh forage corn that can be harvested through breeding and used for feeding livestock and whole-plant corn silage are planted, the corn variety is different from the corn varieties for producing grains or other types.

[0064] The planting method of the fresh forage corn in the embodiments of the present application uses natural sand as the planting substrate, provides planting nutrition through the nutrient solution circulation irrigation technology, and combines photovoltaic power generation for heating and greenhouse planting technology, which can ensure the best growth conditions of the corn, effectively utilize the automatic environmental control technology to achieve the annual high-efficiency production of forage corn in Tibet, and continuously provide fresh forage for livestock such as yaks, so as to solve the problems of serious shortage of forage, off-season forage production, and stable annual supply of forage.

[0065] The feed in the embodiments of the present application includes roughage and concentrate feed. The roughage includes oat grass, whole-plant corn silage, and fresh forage corn. The concentrate feed includes corn, wheat bran, soybean meal, rapeseed meal, corn distillers grains, calcium carbonate, calcium hydrogen phosphate, feed-grade sodium chloride, baking soda, and premix.

[0066] In some embodiments, the fresh forage corn is the above-ground part of the green grass corn cut during the milk ripening stage to the large trumpet mouth stage.

[0067] In some embodiments, the whole-plant corn silage is a product obtained by fermenting and ensiling the above-ground part of the green grass corn cut during the milk ripening stage to the large trumpet mouth stage.

[0068] It should be noted that for the feed in the embodiments of the present application, the fresh forage corn and the whole-plant corn silage can be the fresh forage corn and the whole-plant corn silage obtained by the planting method of the fresh forage corn in the embodiments of the present application, or the fresh forage corn and the whole-plant corn silage commercially available or obtained by other planting methods.

[0069] In some embodiments, the mass ratio of the roughage to the concentrate is (10 - 16):(2 - 3), including but not limited to 5:1, 10:3, 8:1, 16:3, or 13:2.5, etc.

[0070] As a preferred example, the mass ratio of the roughage to the concentrate is 13:2.5.

[0071] In some embodiments, the mass ratio of oat grass, whole-plant corn silage, and fresh forage corn is (1.5 - 2.5):(3.75 - 6.25):(4.5 - 7.5), including but not limited to 1.5:3.75:4.5, 2.5:6.25:7.5, 1.5:6.25:7.5, or 2:5:6, etc.

[0072] As a preferred example, the mass ratio of oat grass, whole-plant corn silage, and fresh forage corn is 2:5:6.

[0073] In some embodiments, the premix includes the following components in mass percentages: 10 - 25% of baking soda, 15 - 23% of table salt, 8 - 15% of calcium hydrogen phosphate, 5 - 9% of rice bran, 2 - 8% of yak multi-minerals, 2 - 6% of sodium sulfate, 0.2 - 2% of yak multi-vitamins, 0.5 - 1.5% of sweetener, 0.5 - 1% of 20wt% monensin, 1 - 3% of anti-putrefactive probiotics, 0.2 - 0.6% of flavoring agent, and the balance is stone powder.

[0074] In some embodiments, the concentrate includes the following components in parts by weight: 50 - 70 parts of corn, 6.4 - 9.6 parts of wheat bran, 9.6 - 14.4 parts of soybean meal, 5.6 - 8.4 parts of rapeseed meal, 6.4 - 9.6 parts of corn distillers grains, 1.2 - 1.8 parts of calcium carbonate, 0.4 - 0.6 parts of calcium hydrogen phosphate, 0.4 - 0.6 of feed-grade sodium chloride, 1.2 - 1.8 parts of baking soda, and 0.8 - 1.2 parts of premix.

[0075] It should be noted that in the embodiments of the present application, the sum of the parts by weight of the above components of the concentrate (i.e., the total parts by weight) is 100 parts by weight.

[0076] As a preferred example, the concentrate feed includes the following components in parts by weight: 60 parts of corn, 8 parts of wheat bran, 12 parts of soybean meal, 7 parts of rapeseed meal, 8 parts of corn distillers grains, 1.5 parts of calcium carbonate, 0.5 part of calcium hydrogen phosphate, 0.5 part of feed-grade sodium chloride, 1.5 parts of baking soda, and 1 part of premix.

[0077] The feed of the embodiment of the present application uses fresh forage corn as the main component of the roughage, which can reduce the feeding cost. At the same time, the reasonable design of the roughage and concentrate feed makes the overall plant protein content of the feed high.

[0078] The feed of the embodiment of the present application can be used for yak feeding and the like.

[0079] The feeding method of the embodiment of the present application includes: feeding the yak with the feed of the embodiment of the present application, wherein the feeding amount of the roughage is 10 - 16 kg / head / day, and the feeding amount of the concentrate feed is 2 - 3 kg / head / day;

[0080] As a preferred example, the feeding amount of the roughage is 13 kg / head / day, and the feeding amount of the concentrate feed is 2.5 kg / head / day.

[0081] As a preferred example, the feeding amount of oat grass in the roughage is 2 kg / head / day, the feeding amount of whole-plant corn silage is 5 kg / head / day, and the feeding amount of fresh forage corn is 6 kg / head / day.

[0082] Some features of the present technology are further illustrated in the following non-limiting examples.

[0083] I. Examples and Comparative Examples

[0084] Example 1

[0085] (Feed)

[0086] The feed of this embodiment is composed of roughage and concentrate feed, wherein:

[0087] The roughage is composed of the following components in parts by weight: 2 parts of oat grass, 5 parts of whole-plant corn silage, and 6 parts of fresh forage corn. The fresh forage corn is the above-ground part of the green corn cut during the milk ripening stage to the large trumpet mouth stage, including the corn stalks, corn husks, etc. The plant height of the fresh forage corn is 1.5 m; the whole-plant corn silage is the product obtained by fermenting and ensiling the above-ground part of the green corn cut during the milk ripening stage to the large trumpet mouth stage (including the corn stalks, corn husks, etc., with a plant height of 1.5 m).

[0088] The concentrate feed consists of the following components by mass percentage: 60% corn, 8% wheat bran, 12% soybean meal, 7% rapeseed meal, 8% corn distillers grains, 1.5% calcium carbonate, 0.5% calcium hydrogen phosphate, 0.5% feed-grade sodium chloride, 1.5% baking soda (sodium bicarbonate), and 1% premix. The premix consists of the following components by mass percentage: 15% baking soda, 20% table salt, 10% calcium hydrogen phosphate, 5% rice hulls, 5% yak multi-minerals, 5% sodium sulfate, 1% yak multi-vitamins, 1% sweetener, 0.8% of 20wt% monensin, 2% anti-putrefactive probiotics, 0.3% flavoring agent, and the balance is stone powder.

[0089] (Feeding method)

[0090] The feeding method of this embodiment includes: feeding yaks with the feed of this application embodiment. Among them, the feeding amount of roughage is 13 kg / head / day, and the feeding amount of concentrate feed is 2.5 kg / head / day; the feeding amount of oat grass in the roughage is 2 kg / head / day, the feeding amount of whole-plant corn silage is 5 kg / head / day, and the feeding amount of fresh forage corn is 6 kg / head / day.

[0091] Example 2 (Upper limit of fresh forage corn content)

[0092] This embodiment is basically the same as Embodiment 1, except that:

[0093] In the roughage, the content of fresh forage corn is 7.5 parts by weight.

[0094] In the feeding method, the feeding amount of roughage is 14.5 kg / head / day, and the feeding amount of fresh forage corn in the roughage is 7.5 kg / head / day.

[0095] Example 3 (Lower limit of fresh forage corn content)

[0096] This embodiment is basically the same as Embodiment 1, except that:

[0097] In the roughage, the content of fresh forage corn is 4.5 parts by weight.

[0098] In the feeding method, the feeding amount of roughage is 11.5 kg / head / day, and the feeding amount of fresh forage corn in the roughage is 4.5 kg / head / day.

[0099] Example 4 (Lower limit of soybean meal content)

[0100] This embodiment is basically the same as Embodiment 1, except that:

[0101] In the concentrate feed, the mass content of corn is 62.4%, and the mass content of soybean meal is 9.6%.

[0102] Example 5 (Upper Limit of Soybean Meal Content)

[0103] This example is basically the same as Example 1, except that:

[0104] In the concentrate feed, the mass content of corn is 57.6%, and the mass content of soybean meal is 14.4%.

[0105] Example 6

[0106] This example is basically the same as Example 1, except that:

[0107] The fresh forage corn and whole-plant corn silage in the roughage are obtained by the fresh forage corn planting method of this application example.

[0108] Specifically, it includes:

[0109] Construct a greenhouse;

[0110] Use natural sand as the planting substrate;

[0111] Provide the nutrients required for planting through the nutrient solution circulation irrigation technology;

[0112] Provide the temperature required for planting through photovoltaic power generation.

[0113] Among them, the material of the greenhouse includes steel structure and PO film.

[0114] The natural sand is gobi sand, with an average particle size of 2 - 5 mm and a laying thickness of 50 cm.

[0115] The nutrient solution involved in the nutrient solution irrigation technology includes water-soluble fertilizers of macronutrients, water-soluble fertilizers of medium nutrients, urea, potassium dihydrogen phosphate, etc. Among them: 2000 g of water-soluble fertilizers of macronutrients per ton of water, 800 g of water-soluble fertilizers of medium nutrients per ton of water, 250 g of urea per ton of water, and 250 g of potassium dihydrogen phosphate per ton of water.

[0116] The planting conditions of fresh forage corn include: soil temperature 16℃ - 30℃, soil humidity 26% - 35%, air temperature 26℃ - 38℃, air humidity 15% - 90%.

[0117] The fresh forage corn is grass corn, and it is harvested during the milk ripening stage to the large trumpet mouth stage.

[0118] Comparative Example 1

[0119] This comparative example is basically the same as Example 1, except that:

[0120] Replace the fresh forage corn in the roughage with fully mature corn.

[0121] Comparative Example 2

[0122] This comparative example is basically the same as Example 1, except that:

[0123] The roughage does not contain fresh forage corn.

[0124] Comparative Example 3

[0125] This comparative example is basically the same as Example 1, except that:

[0126] The roughage does not contain fresh forage corn;

[0127] In the feeding method, the feeding amount of roughage is 8 kg / head / day, and the feeding amount of concentrate is 3.5 kg / head / day; the feeding amount of oat grass in the roughage is 3 kg / head / day, and the feeding amount of whole-plant corn silage is 5 kg / head / day.

[0128] II. Effect Test

[0129] 1. Nutritional Components

[0130] Test the nutritional components of the concentrate in Example 1, and the test results are shown in Table 1.

[0131] Table 1 Test Results of Nutritional Components of Concentrate in Example 1

[0132]

[0133]

[0134] It can be seen from Table 1 that the concentrate of the example of the present application has high nutritional value.

[0135] 2. Feeding Cost Accounting

[0136] Account for the costs of feeding yaks with the feeds of some examples and comparative examples, and the results are shown in Table 2.

[0137] Table 2 Costs of Feeding Yaks with Feeds of Some Examples and Comparative Examples

[0138]

[0139] It can be seen from Table 2 that the energy levels of the feeds of the examples of the present application replacing the feeds of the comparative examples as the daily ration are the same, and the dry matter content ingested by yaks every day is the same, about 2.5% of the body weight. However, the cost is significantly reduced. Taking Comparative Example 3 and Example 1 as an example, the feeding cost of yaks can be reduced from the previous 25.575 yuan to 23.225 yuan, saving 2.35 yuan of feed cost per yak per day. On the premise that the nutritional concentration of the daily ration (the ratio of roughage to concentrate in the daily ration) remains unchanged, the daily weight gain or production performance of yaks should not be reduced.

[0140] In this application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0141] Although the embodiments of this application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting this application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. A planting method for fresh forage corn, characterized in that, it includes: Constructing a greenhouse; Using natural sand as the planting substrate; Providing the nutrients required for planting through the nutrient solution circulation irrigation technology; Providing the temperature required for planting through photovoltaic power generation.

2. The planting method for fresh forage corn according to claim 1, characterized in that, it further includes: During the milk ripening stage to the large trumpet mouth stage, cutting the part above the ground of the green grass corn at ground level to obtain fresh forage corn.

3. A feed, characterized in that, it includes roughage and concentrate feed. The roughage includes oat grass, whole-plant corn silage and fresh forage corn, and the concentrate feed includes corn, wheat bran, soybean meal, rapeseed meal, corn distillers grains, calcium carbonate, calcium hydrogen phosphate, feed-grade sodium chloride, baking soda, premix.

4. The feed according to claim 1, characterized in that, the fresh forage corn is the part above the ground of the green grass corn cut during the milk ripening stage to the large trumpet mouth stage; and / or, the whole-plant corn silage is a product obtained by fermenting and ensiling the part above the ground of the green grass corn cut during the milk ripening stage to the large trumpet mouth stage.

5. The feed according to claim 1, characterized in that, the mass ratio of the roughage to the concentrate feed is (10 - 16):(2 - 3); and / or, the mass ratio of the oat grass, the whole-plant corn silage and the fresh forage corn is (1.5 - 2.5):(3.75 - 6.25):(4.5 - 7.5).

6. The feed according to claim 5, characterized in that, the mass ratio of the roughage to the concentrate feed is 13:2.5; and / or, the mass ratio of the oat grass, the whole-plant corn silage and the fresh forage corn is 2:5:

6.

7. The feed according to claim 1, characterized in that, the premix includes the following components in mass percentages: baking soda 10 - 25%, table salt 15 - 23%, calcium hydrogen phosphate 8 - 15%, rice bran 5 - 9%, yak multi-mineral 2 - 8%, sodium sulfate 2 - 6%, yak multi-vitamin 0.2 - 2%, sweetener 0.5 - 1.5%, 20wt% monensin 0.5 - 1%, anti-putrefactive probiotic 1 - 3%, flavoring agent 0.2 - 0.6%, and the balance is stone powder. and / or, the concentrate feed includes the following components in parts by weight: corn 50 - 70 parts, wheat bran 6.4 - 9.6 parts, soybean meal 9.6 - 14.4 parts, rapeseed meal 5.6 - 8.4 parts, corn distillers grains 6.4 - 9.6 parts, calcium carbonate 1.2 - 1.8 parts, calcium hydrogen phosphate 0.4 - 0.6 parts, feed-grade sodium chloride 0.4 - 0.6, baking soda 1.2 - 1.8 parts, premix 0.8 - 1.2 parts.

8. The feed according to claim 7, characterized in that, the concentrate feed includes the following components in parts by weight: corn 60 parts, wheat bran 8 parts, soybean meal 12 parts, rapeseed meal 7 parts, corn distillers grains 8 parts, calcium carbonate 1.5 parts, calcium hydrogen phosphate 0.5 parts, feed-grade sodium chloride 0.5, baking soda 1.5 parts, premix 1 part.

9. Use of the fresh forage corn obtained by the planting method of fresh forage corn according to claim 1 or 2, or the feed according to any one of claims 3 to 8 in yak feeding.

10. A feeding method, characterized in that, comprising: feeding yaks with the feed according to any one of claims 3 to 8, wherein the feeding amount of roughage is 10-16 kg / head / day, and the feeding amount of concentrate is 2-3 kg / head / day; Preferably, the feeding amount of roughage is 13 kg / head / day, and the feeding amount of concentrate is 2.5 kg / head / day.

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