The phenomenon of postpartum waste of grain can not be ignored.

When it comes to food waste, people focus more on the "dominant waste" on the table and pay little attention to the loss of each link after grain production. After production alone, China's annual grain loss exceeds 70 billion jin, close to 6% of China's total grain output, which is equivalent to the one-year grain output of Jilin Province, a major grain-producing province. Grain loss has become an important factor affecting China's food security.

According to the investigation, the postpartum loss of grain is mainly reflected in four aspects: first, there are many omissions in mechanical harvesting. Sometimes the corn has less moisture, and the corn kernels are dry and crisp, so it is easy to drop the corn kernels when mechanized harvesting corn cobs. When you catch up with the lodging of corn, you will also drop some corncobs, which is lost a lot every year. Second, warehousing: rat eating, mildew, fire. During interviews in rural areas in some areas of Changzhi, the author found that many farmers still store grain directly on the ground, causing waste and easily leading to mildew. Chen Fengxiang, a farmer in Huguan County, said: "We also have a headache. If rats eat and the land returns to moisture, we will lose no matter how careful we are." Third, transportation: it is difficult to calculate the loss of leakage. The author learned in the interview that some grain collection and storage enterprises have not only increased the risk of grain storage, but also restricted the transfer and transportation of grain, and increased the loss of grain in circulation due to the simple storage facilities and backward mode of transportation. Fourth, processing: waste caused by excessive processing. With the improvement of the economic level, when people buy rice, they ask not only for taste, but also for appearance. Most rice is polished, or even polished many times. But once polished, the rice is reduced by one layer and the rice yield is reduced. Over-processing of grain will not only reduce nutrition, but also increase production costs.

There are many reasons for the serious post-natal grain loss in our country. To reduce the grain loss, we can not only focus on the open source and ignore the cost-saving, nor can we just focus on the dining table and ignore the waste of storage and processing, let alone focus on the hardware input and ignore the system construction.

First of all, it is necessary to strengthen the consciousness of loving and saving grain. At present, the propaganda of loving and saving grain is mostly held in conjunction with the time points such as "World Food Day" or "propaganda week of loving and saving grain", which is rare but shallow, and there is a lack of targeted education and criticism on people and things who waste food wantonly.

Second, it is necessary to straighten out grain prices. At present, China's grain-based agricultural products have reached the era of high prices, but grain prices are still obviously on the low side. When the grain price is so low that it is not in line with the economic law, it is bound to affect the enthusiasm of farmers to grow grain and the establishment of grain-saving consciousness.

In addition, we should pay attention to both capital investment and system construction. It is necessary to build a modern grain logistics system, vigorously promote bulk grain transportation, promote advanced and practical warehousing, loading and unloading, and transportation technology and equipment, and effectively reduce grain logistics losses. It is necessary to increase technical support and financial input for scientific grain growing, grain storage, transportation, and processing, promote the improvement of farmers' grain storage conditions, develop technologies suitable for farmers' grain storage, speed up the construction of grain circulation system, and reduce transportation losses. It is necessary to carry out scientific research on grain storage, change the concept of grain storage, change the current situation of extensive management, and speed up the development of new grain storage models such as grain banks. We will accelerate the upgrading of grain reserve management to modernization, green grain storage and intelligent management.