How much is the price of japonica rice this year? What varieties do you have? What is the difference between it and indica rice? Management elements of Japonica Rice in the Middle and late stage

Japonica rice, a kind of rice, mainly produces in the Yellow River basin, north and northeast of China, while in the south it is distributed above 1800 meters above sea level and is more tolerant to cold. So how much is the price of japonica rice this year? What varieties do you have? What is the difference between it and indica rice? What are the management elements of japonica rice in the middle and later stage? It is learned from the Jiamusi japonica rice market in Heilongjiang that the price of japonica rice 1805 is about 3504 yuan / ton, the price of japonica rice 1807 is about 3199 yuan / ton, the price of japonica rice 1809 is about 3378 yuan / ton, and the price of japonica rice 1811 is about 3312 yuan / ton.

What varieties of japonica rice do you have?

According to the different sowing time, growing period and mature period, japonica rice can be divided into three types: early japonica rice, middle japonica rice and late japonica rice. Generally, the growth period of early rice, medium rice and late rice is 90,120,150 and 150,170 days respectively. Their sowing time and harvest season also vary greatly due to different climatic conditions in different regions. Here are some common varieties:

1. Conventional japonica rice Wuyunjing 27 Jiangsu (Wujin) Rice Research Institute 2014 Su Shendao 201209

2. Conventional japonica rice Nanjing 49 2014 Su Shendao 201207, Institute of Food crops, Jiangsu Academy of Agricultural Sciences

3. Conventional japonica rice Nanjing 5055, Institute of Food crops, Jiangsu Academy of Agricultural Sciences 2014 Su Shendao 201114

4. Conventional Japonica Rice Zhendao 11 Jiangsu Hilly area Zhenjiang Institute of Agricultural Sciences 2013 Su Shendao 201015

5. Conventional japonica rice Yangjing 4227 Jiangsu Lixiahe area Agricultural Science Research Institute 2013 Su Shendao 200912

6. Conventional japonica rice Ningjing 4 2013 State Review Rice 2009040, College of Agriculture, Nanjing Agricultural University

7. Conventional japonica rice Wuyunjing 24, Institute of Agricultural Sciences, Wujin District, Changzhou 2011 Su Shendao 201009

8. Conventional japonica rice Nanjing 45 2011 Su Shendao 200910, Institute of Food crops, Jiangsu Academy of Agricultural Sciences

9. Conventional japonica rice Yangjing 4038 Jiangsu Lixiahe Regional Institute of Agricultural Sciences 2010 Shanghai Agricultural Product Review Rice 2010; Su Shendao 200810

10. Conventional japonica rice Ningjing 3 Nanjing Agricultural University 2010 Wandao 2009005; Sushendao 200809

What is the difference between japonica rice and indica rice?

1. The character of indica rice is close to that of its ancestor wild rice, so some scholars think that indica rice has no basic type and japonica rice has no variant. Indica rice is suitable for planting in humid and hot areas at low latitude and low altitude, and its grain is easy to fall off, and it is more resistant to moisture, heat and strong light, but not cold, while japonica rice is more suitable for planting at high altitude at high latitude or low latitude. Japonica rice is more resistant to cold and weak light, but not resistant to high temperature, so japonica rice varieties are generally used in the later season of double cropping rice in the middle and lower reaches of the Yangtze River and north of the Yellow River.

2. in grain business, it is mainly based on the properties and grain shape of rice, generally indica rice has poor stickiness and long and narrow grain shape, while japonica rice is sticky and short and round. The difference in viscosity between indica rice and japonica rice steamed rice is mainly due to the different starch composition. Starch can be divided into amylose and amylopectin. Amylopectin is rich in viscosity and can be completely gelatinized into a sticky paste after cooking, while amylose can only form a paste with low viscosity. Indica rice contains more amylose, so the viscosity is less than japonica rice, glutinous rice contains almost 100% amylopectin, viscosity is very high, especially japonica glutinous (big waxy).

Attached: management elements in the middle and later stages of japonica rice

Japonica rice is in the key stage of panicle differentiation and the formation of yield components, which is the most favorable period to increase seed setting rate and 1000-grain weight. Scientific management will play a decisive role in winning high quality and high yield, and at the same time, it will play a certain role in making up for the lack of growth in the early stage. I hope not to ignore the management of this period of time.

1. Application of grain fertilizer: the main function of grain fertilizer is to maintain suitable nitrogen level and higher photosynthetic rate of leaves, prevent premature senescence of roots, stems and leaves, and make grains full. That is to say, grain fertilizer should be applied to the paddy fields with yellow leaves, low nitrogen content in plants and insufficient soil fertility. If there is no obvious lack of fertilizer in the plant, it is not suitable to apply fertilizer. The application of grain fertilizer or not, the amount of fertilizer, must be considered according to the seedling situation, avoid excessive fertilization and period discomfort. If the ear grain fertilizer is applied blindly, it is easy to lead to greedy green late ripening, empty grain increase, 1000-grain weight decrease, and diseases and insect pests are easy to occur. Paddle management: in order to improve the panicle rate of sunflower, ensure the normal development of branches and spikelets, and increase the number of grains per panicle, the paddy field should maintain a shallow water layer, usually 4-6 cm deep. After heading, the irrigation method of frequent irrigation with small water and alternating between dry and wet should be adopted, that is, a small amount of water should be irrigated each time to form a shallow water layer, and then the next water should be irrigated after the soil is moist, until the water is cut off a week before harvest. Real realization: regulating air with water, nourishing roots with gas, protecting leaves with roots, and protecting yield with leaves.

2. Management of rice at fruiting stage in this period, the general principles of rice management are as follows: to maintain roots and protect leaves, to prevent premature senescence of leaves, to make large grains full, and to prevent empty grains. 1. Reasonable irrigation and timely drainage. During the period of heading and flowering, it is still necessary to maintain a certain water layer in the field, adjust the water temperature and increase the air humidity to facilitate flowering and pollination. To the filling period, take dry-wet, wet-based irrigation method, that is, after one irrigation, naturally dry for 1-2 days, and then irrigate again. In this way, the purpose of nourishing roots with gas and protecting leaves with water can be achieved, which is beneficial to promote filling and prevent premature senility. When entering the wax ripening period, we should adopt the method of dry, wet and dry irrigation, which will naturally dry for 3-4 days after one irrigation, and then irrigate again. In the later stage, drain the water 7-10 days before harvest. 2. Harvest in time. Rice harvest is generally from the late stage of wax ripening to the early stage of full maturity. At this time, the grain turns yellow, the stems, leaves and ears turn yellow, so it should be harvested in time to ensure a bumper harvest.