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Meteorological data show that in 2015, the peak of rice harvest in our province encountered cloudy and rainy weather lasting for one month, especially November 24-25 when snowfall occurred along the western part of Huaihei North and between the Yangtze and Huaihe rivers, resulting in “snow pressure riceâ€. The rare phenomenon. A long period of overcast rain has caused the soil to become too wet, and it has been difficult for the harvesting machinery to go to the fields. The rice in some fields appeared to be lodging, mildew, and ear sprouting, and it was not harvested until early December. Delayed rice harvesting and thus affecting wheat sowing, wheat late planting, late sowing area increased, such as the end of the basic sowing of wheat until December 15 in Lianyungang area, there are more than 700,000 acres of wheat could not emerge before the winter.
“The delay in rice harvesting is partly due to the delay in the maturity period due to improper planting. On the other hand, the lack of equipment has affected the progress of the harvest.†Chen Liugen said that in recent years, the temperature in autumn is generally higher in the province. In order to make full use of the temperature and light resources, the Rice production, production and more use of relatively long growth period of the species, while direct-seeding rice and other light and rapid cultivation methods, especially in Huaibei area of ​​direct broadcast rice increased significantly. Changes in varieties and planting methods are important factors for the general delay in rice maturation for many years. In addition, due to the large area of ​​large farms, the overall arrangements for the sowing of rice in batches, etc. are not in place, and the convergence of time is not tight, which will also cause delays in the maturity period.
Chen Liugen said that 2015 is a special year. Except for cultivation factors that delay the maturation of rice, the more common situation in production is that rice has matured. However, due to continuous rainy weather and unmatched drying facilities, rice cannot be harvested. This situation is even more pronounced in large farming families. It is understood that there is basically no drying area in the production, and the drying equipment is seriously insufficient. Farmers, especially large farmers in the north of Jiangsu Province, generally wait until the “frost fall†and the grain moisture content drops below 17% and the harvest is directly warehousing or selling. In 2015, under continuous rainy weather conditions, large-scale mature rice could not be dried, but the holding capacity of drying equipment in some areas could not meet the production demand. Farmers were not afraid to harvest rice mold to prevent harvesting, and the field was even worse. Affecting the operation of harvesters into the fields, a variety of factors have caused the rice harvest to be shelved.
Chen Liugen pointed out that rice production should use varieties with a relatively short growth period, along the Yangtze River and southern Jiangsu should be dominated by early-maturing late japonica rice varieties, compressing the area of ​​late-maturing late japonica rice varieties; the middle and late Shuzhonghe Xiahe area should be late mature mid-season rice Variety dominated, reducing the area of ​​early maturing late japonica varieties; Huaibei region should be dominated by medium japonica japonica rice varieties. As far as possible, planting patterns such as machine insertion and planting were adopted to compress the planting area of ​​direct-seeded rice to avoid excessive delay in the maturity of rice. In order to reduce the soil moisture at the later stage of fertility and facilitate the harvesting of the machine in the field, the paddy fields should be well-produced and the water should be cut off for 10 days before harvest. At the same time, it must be equipped with facilities such as drying yard and dryer to solve the problem of not being able to dry in rainy weather during mature period.
"The transfer of land to large planters for centralized planting and large-scale planting will have a greater role in promoting grain production. However, attention should be paid to keeping up with post-harvest services and supporting facilities to avoid affecting normal production," Chen Liugen reminded.
Rice late in the ripening period is safe to harvest
In recent years, the rice harvest in our province has been generally delayed, which not only affects the safe production of rice, but also affects the timely sowing of late glutinous wheat. In 2015, the province's paddy rice faced continuous rainy weather and the harvest period was further delayed. In particular, some large farm owners were affected by factors such as unreasonable operation scale and lack of drying fields, which made harvesting difficult, and the risk of rice harvesting was highlighted. Dr. Chen Liugen, a rice cultivation expert at the Jiangsu Provincial Academy of Agricultural Sciences, recently reminded reporters that rice production should be based on the early maturity of technical measures, and properly equipped with drying equipment to ensure the safe harvest of rice.