How to plant rice

Juniper rice has a high nutritional value and is edible. Although it is seldom eaten as food today, its edible history can be traced back to the Zhou Dynasty more than 3,000 years ago, and it was one of the six grains for emperors to eat. So, how to grow rice?

1. Takeda selection

The paddy field with good light, flat land, deep soil layer and strong water conservation and fertility should be selected, especially the paddy field with cold water or the land near the reservoir that can be irrigated by deep water.

2. Ploughing and fertilization

Ploughing the Zizania latifolia field, apply 3000 kg of rotten farm manure or 2500 kg of thick human manure per mu. If the previous crop is a rice field, you should also increase the amount of base fertilizer, rake it flat, and then irrigate 2-3 cm, so that the field is flat, mud rotten and fat.

3. Timely planting

From April to early May, the seedlings can be transferred and planted when the height of the seedlings is about 20 cm and the soil temperature in the paddy field is more than 10 ℃.

4. Water level management

The water level management of Zizania latifolia is based on the principle of "shallow, one deep and one shallow". In the early growth stage after planting (before tillering), keeping a shallow water level of 3-5 cm is beneficial to increase the ground temperature and promote rooting and tillering. In the later stage of tillering in June, the water level was deepened to 12-15 cm to inhibit the occurrence of invalid tillers. Due to the high temperature from July to August, the deep water level also had a cooling effect, but the water should be changed regularly to prevent rotting roots caused by soil hypoxia.

During the gestation period, the water level should be deepened to 15-18 cm, but should not exceed the position of the "peel eye" (the highest water level should not exceed 2 of the pseudostem) to prevent the bolting tube from elongating. In the later stage of pregnancy, the water level should be lowered to 3-5 cm to facilitate harvest. After harvest, the paddy field should be kept in shallow water or moist state for the winter, and should not be dry.

5. Topdressing by stages

Seedling fertilizer: after 7-10 days of survival, 500 kg of human feces and urine or 15-20 kg of ammonium bicarbonate per mu can be applied to promote seedlings. If the basal fertilizer is enough, the amount of fertilizer can be reduced.

Tillering fertilizer: at the early tillering stage (about 10 days apart from the first fertilizer), 1000 kg of human feces and urine or 20-30 kg of ammonium bicarbonate were applied per mu to promote effective tillering and plant growth. If no seedling fertilizer is applied, tiller fertilizer should be applied in advance.

Regulatory fertilizer: in the peak tillering period from June to July, topdressing should be carried out according to the growth of the plant, generally applying 10-15 kg of ammonium bicarbonate per mu, but not if the plant growth is strong.

Fertilizer for promoting Zizania latifolia: when the pseudo-stem of the tillering seedling of Zizania latifolia with 10 ℅-20 ℅ has been flattened, it should be re-applied at this time to promote the expansion of fleshy stem and increase yield, generally applying 2500-3000 kg of manure per mu, or 30-40 kg of ammonium bicarbonate. Zizania latifolia fertilizer should be applied at the right time, early application, the plant has not yet pregnant Zizania latifolia, easy to cause overgrowth, thus delaying pregnancy. If the fertilizer is applied too late, it will not be able to catch up with the need for fertilizer during pregnancy, which will affect the yield.

6. cultivate the field in the middle

After plucking and planting Zizania latifolia, weeding should be done in time. In order to protect the tillers, the tillers should be cultivated from near to far to prevent damage to the tillers. It is better to cultivate the field without weeds, the mud is not too solid, and the soil is flat. In the late tillering stage of Zizania latifolia in late June, the old leaves and yellow leaves at the base of the plant should be removed in time to promote ventilation and light transmission and pregnancy. Pick yellow leaves once every 7-10 days for a total of 2-3 times. The peeled yellow leaves will be stepped into the mud at any time and can be used as fertilizer.

7. Timely harvest

Zizania latifolia in mountain areas generally began to be pregnant in early July and harvested from mid-August to early September, which was 20-30 days earlier than that in plain areas. Different climatic conditions, especially the temperature, will affect the gestation time and harvest time of Zizania latifolia. When harvesting, cut off the bolting tube, cut off the leaves, leave the leaf sheath 40 cm, and the scabbard can be stored in clear water for 3-5 days (if stored in cold storage, it can be kept fresh for 60-70 days).

Generally speaking, it takes about 14-18 days from the beginning of pregnancy to harvest. If the harvest is too early, the fleshy stem has not been fully expanded and the yield is low. If the harvest is too late, the meat of Zizania latifolia turns green, the quality decreases, and it is easy to form Zizania latifolia. After entering the harvest period, it should be harvested every 3-4 days. Generally, about 1600 kg of Zizania latifolia is produced per mu.

In addition to its high nutritional value, it also contains lycopene, which is a natural dye and can be used as a food colorant. Its pigment is safe and harmless to human body.