供应增多叠加新季上市，盘面偏弱震荡

1. Report Industry Investment Rating No information provided in the document. 2. Core Viewpoints of the Report - The US corn 12 - contract has limited downside space below 400 cents per bushel as the market price is below the cost and the yield per unit may be revised down later. The domestic corn spot price is expected to continue to decline due to factors such as continuous auctions, high warehouse receipts, lower planting costs, and the upcoming new - season corn harvest. The 01 corn contract is expected to oscillate weakly and may fall to 2150 yuan per ton. The starch market will follow the corn market and oscillate weakly [4][5]. 3. Summary by Relevant Catalogs 3.1 Chapter 1: Comprehensive Analysis and Trading Strategies - Corn: The US Department of Agriculture (USDA) August report raised the yield per unit and area of US corn, resulting in a record - high production. The US corn price has broken below 400 cents per bushel, but it is significantly lower than the cost of 470 cents per bushel. As of August 15, 3.28 million tons of corn were auctioned, with 1.24 million tons sold, a transaction rate of 38%. The domestic corn spot price continues to decline due to factors such as continuous auctions of imported corn, high 09 warehouse receipts, lower domestic planting costs, and the upcoming new - season corn harvest. The market expects that the price of North China corn will likely fall below 2200 yuan per ton when it is abundantly available in October, and the 01 corn contract may oscillate weakly and fall to 2150 yuan per ton [4]. - Starch: The starch factory operating rate has increased, but downstream demand remains weak. Although the corn spot price has declined, the starch spot price has also fallen, and starch factories are still suffering large losses. The operating rate of North China starch enterprises will decline later, and the North China starch price will continue to fall with the upcoming new - season corn harvest. The 11 and 01 starch contracts are expected to follow the corn market and oscillate weakly [4]. - Trading Strategies: For the US corn 12 - contract, consider buying below 400 cents per bushel. For the domestic 01 corn contract, consider buying around 2150 yuan per ton. Pay attention to the opportunity to expand the spread between the 01 and 11 corn and starch contracts. For options, adopt a wait - and - see approach [5]. 3.2 Chapter 2: Core Logic Analysis - International Market - US Corn: The August report raised the area and yield per unit of US corn, causing the price to break below 400 cents per bushel for the 12 - contract. The import tariffs on US corn and sorghum are 26% and 23% respectively, and the domestic import profit has increased. As of August 5, the non - commercial net short position of US corn decreased, and the US ethanol production declined. Although the US corn price has broken below 400 cents per bushel, the downside space is limited as the yield per unit may be revised down later [8][15]. - Domestic Market - Corn: Feed enterprise corn inventories have decreased compared to the previous period but are higher than the same period last year. The consumption of deep - processing enterprises has declined, and their inventories have also decreased and are expected to continue to decline next week. Both the northern port corn inventories and southern port grain inventories have decreased [19][20][23]. - Domestic Market - Starch: The deep - processing operating rate has increased, with the national corn processing volume reaching 576,000 tons and starch production at 289,200 tons this week. The operating rate is 55.9%, an increase of 2.07% from last week. The profit loss has narrowed due to the decline in North China corn spot prices, stable starch spot prices, and strong by - product prices. Starch inventories have increased but are expected to decline next week [26][27]. - Substitute - Wheat: The wheat price is basically stable, with the North China delivered - to - factory price around 2450 yuan per ton. The price difference between wheat and corn has widened, the North China corn price has declined, the Northeast corn price has remained stable, the price difference between North China and Northeast corn has narrowed, and the price difference between North China corn and the 09 corn contract has increased [33]. - Livestock and Poultry - Related: In the week from August 7th to 14th, the self - breeding and self - raising profit of pigs was 11 yuan per head, a decrease of 20 yuan per head from last week, and the profit of purchasing piglets was - 204 yuan per head, a decrease of 17 yuan per head from last week. The white - feather broiler breeding profit was 1.78 yuan per bird, up from 1.16 yuan per bird last week. The egg - laying hen breeding cost was 3.5 yuan per catty, and the average price in the main production areas was 3.02 yuan per catty, up from 3.01 yuan per catty last week [39][45]. - Deep - Processing - Starch Downstream Consumption: The F55 high - fructose corn syrup operating rate was 58.62%, an increase of 0.5% from last week, and the maltose syrup operating rate was 47.33%, an increase of 0.43% from last week. The corrugated paper operating rate was 61.78%, a decrease of 0.12% from last week, and the boxboard paper operating rate was 70.0%, an increase of 1.32% from last week [48]. 3.3 Chapter 3: Weekly Data Tracking - US Corn: As of August 7, the weekly US corn export inspection volume was 1.49 million tons, and the cumulative export volume was 63.13 million tons. The weekly export volume to China was 0 tons, and the cumulative export volume to China was 27,000 tons, accounting for 0.04%. In June, the domestic corn import volume was 160,000 tons, and the cumulative import volume from January to June was 790,000 tons, compared with 1.105 million tons in the same period last year [9]. - Domestic Corn and Starch: As of August 14, the average corn inventory of 47 large - scale feed enterprises was 29.61 days, a decrease of 0.83 days from the previous week and an increase of 2.07% compared to the same period last year. From August 7th to 14th, 149 major domestic corn deep - processing enterprises consumed 1.1406 million tons of corn, a decrease of 24,000 tons from the previous week. As of August 13, the corn inventory of 96 deep - processing enterprises was 3.402 million tons, a decrease of 6.62% from the previous week. As of August 8, the northern four - port corn inventory was 1.774 million tons, a decrease of 131,000 tons from the previous week, and the four - port shipping volume was 247,000 tons, an increase of 7000 tons from the previous week. The total grain inventory in Guangdong Port decreased by 184,000 tons to 1.544 million tons [19][20][23]. - Starch Market: From August 7th to 14th, the national corn processing volume was 576,000 tons, and starch production was 289,200 tons, with an operating rate of 55.9%, an increase of 2.07% from last week. This week, the profit per ton of corn in Heilongjiang was - 90 yuan, an increase of 17 yuan from last week, and in Shandong, it was - 90 yuan, an increase of 18 yuan from last week. As of August 13, the corn starch inventory was 1.332 million tons, an increase of 12,000 tons from last week, with a monthly increase of 1.6% and an annual increase of 20.3% [26][27]. - Livestock and Poultry Market: In the week from August 7th to 14th, the self - breeding and self - raising profit of pigs was 11 yuan per head, a decrease of 20 yuan per head from last week, and the profit of purchasing piglets was - 204 yuan per head, a decrease of 17 yuan per head from last week. The white - feather broiler breeding profit was 1.78 yuan per bird, up from 1.16 yuan per bird last week. The egg - laying hen breeding cost was 3.5 yuan per catty, and the average price in the main production areas was 3.02 yuan per catty, up from 3.01 yuan per catty last week [39][45]. - Deep - Processing Downstream: The F55 high - fructose corn syrup operating rate was 58.62%, an increase of 0.5% from last week, and the maltose syrup operating rate was 47.33%, an increase of 0.43% from last week. The corrugated paper operating rate was 61.78%, a decrease of 0.12% from last week, and the boxboard paper operating rate was 70.0%, an increase of 1.32% from last week [48].