Fertilization of double-season late rice

Due to the short growth period, the double-season late rice began to differentiate into ears during tillering, and entered the tillering stage during ear differentiation. Only a significant peak of absorption was observed in the whole life, that is, the peak of absorption was formed 2 to 3 weeks after transplanting. It is earlier than the single-season late rice, and it is also superimposed. The peak of the double-season late rice is not as obvious as that of the early rice, but it has more fertilizer absorption than the early rice. Due to the high water temperature and soil temperature in the early stage of late rice, it is not conducive to the growth and absorption of roots. Therefore, it is necessary to pay attention to the appropriate increase of panicle fertilizer for double-season late rice, which can be carried out twice in the differentiation of young ears-meiosis. However, in the middle and lower reaches of the Yangtze River, the nitrogen fertilizer should be controlled in several stages, because the temperature will drop rapidly in the later period. Excessive nitrogen fertilizer will cause rice to be greedy, delay the maturity and reduce production, and increase the occurrence of rice plant diseases and insect pests. According to the above characteristics, in the double-season late rice nitrogen fertilizer application technology, the distribution principle of the ratio of base fertilizer to topdressing is used. In the panicle differentiation stage, the appropriate amount of topdressing is applied in several stages. Under the condition of ensuring safe heading, the seedlings can be applied in the later stage. Hope to get a better yield increase.