How to manage water and fertilizer in the middle and later stage of rice?

How to manage water and fertilizer in the middle and later stage of rice? Please introduce the management methods of rice water and fertilizer management in the middle and later stages can be referred to as follows: (1) prudent application of panicle fertilizer as appropriate to promote large panicles, full grains and high yield of rice. According to the results of early rice seedling growth and field diagnosis, the application rate of panicle fertilizer was delayed, reduced and reduced in fields with high soil fertility, strong ability of water and fertilizer conservation, more tillers and thicker leaves. Generally, 5kg urea was applied per mu in the booting differentiation stage, 5m / m, 7th stage or 2nd leaf stage. In the fields with poor fertilizer conservation ability, insufficient tillering and light leaf color, the amount of panicle fertilizer should be increased appropriately in advance, generally at the 4-leaf inverted booting stage, 8 kg urea per mu, and foliar spraying of trace element fertilizers such as potassium dihydrogen phosphate at the first heading stage of rice to increase satiety and yield. (2) do a good job of water slurry management in the middle and later stages of rice scientifically and rationally. The middle and later stage of rice growth is the critical period of rice water demand, which must not be dry. Water slurry management should be carried out quantitatively according to the characteristics of water demand in the middle and later stage of rice. In order to improve the quality of rice population, enhance stress resistance and seed setting rate. The specific operation method of water slurry management is to alternate irrigation in shallow water, so as to maintain roots and protect leaves, reduce and reduce the harm of rice diseases such as sheath blight. The water was cut off about 10 days before maturity. Click to get more rice planting techniques click to get more food crop planting techniques