Cultivation techniques of Space Red Rice-Weihong Crystal Rice

Weihongjing crystal rice (approved name: Gan Wanxian 33), the only Weihongjing crystal rice in China, is a new high-quality red rice variety, which is a new high-quality red rice variety, which is a rice breeding expert, researcher Li Yuanxiang, together with the Institute of Genetics of Chinese Academy of Sciences, adopted 1000 seeds of genetically engineered rice "GER-3" for both middle and late indica, carried a recoverable satellite, selected its mutant after mutagenesis, and then selected it for 3 years. It is also the only red rice variety in space rice in China. After being introduced and planted in our base, the plant has good performance, no photosensitive and temperature sensitive response, stable yield, lodging resistance, disease and insect pest resistance, and excellent rice quality. The cultivation techniques of this variety are as follows.

First, the suitable species area. The whole growth period is 150 days in the middle altitude area of eastern Fujian and 140 days in the low altitude area. Guangdong and Guangxi can be planted as early rice and second-late rice, and single-cropping rice should be planted in the Yangtze River valley and in the middle and high elevations to the south of the Yangtze River. it should be planted in a small area above 1000 meters above sea level, and single-cropping rice should be planted after wheat harvest in the north of the Yangtze River. to the north of the Great Wall is limited to a small number of introduction and trial planting.

Second, plant type characteristics. The plant height is 96 cm, the plant type is compact, the stem is short and strong, the flag leaf is straight upward, the tillering ability is strong, the effective ear of the plant is 12-25 ears, the ear length is 20-25 cm, the grain is dense, 200 grains per panicle, more than 250 large ears, uniform panicle size, seed setting rate of more than 96%, 1000-grain weight 27.5 grams. Mountain fields generally produce 450 kg 400 kg per 667 square meters, fertile fields produce 550 kg ~ 600 kg per 667 square meters, and high-yield cultivation reaches more than 630 kg. It is highly resistant to diseases and insect pests during the whole growing period.

Third, the shape of rice. Rice grain is slender, brown rice is light red to dark red, glossy. Milled rice is light pink and transparent, no belly white, white heart, rich aroma, soft and refreshing, excellent taste, is the best variety of red rice.

Fourth, cultivation techniques. Seed 1 kg ~ 2 kg per 667 square meters, and the seedling age is no more than 30 days. One seedling is planted in the fertile field hole, and two seedlings are planted in the barren field in the mountain area, with 15000 clumps per 667m2, and then irrigated in shallow water.

Fifth, fertilization and pest control. Tillering fertilizer was applied 6-7 days after insertion, and the amount of fertilizer was applied with reference to ordinary hybrid rice. 70% of tiller fertilizer was applied in the early stage, 20% in the middle stage and 10% in the later stage. If green pollution-free rice is planted, pollution-free water sources in mountainous areas should be selected and organic fertilizers should be used to add a small amount of nitrogen, phosphorus and potassium fertilizer. Pay attention to the prevention and control of diseases and insect pests before heading, and try not to use pesticides after heading.

6. Water management. In the early stage after planting, keep an inch of water in the field, water temperature above 20 ℃, fertilizer and water to raise seedlings and tillers, in order to facilitate early growth and rapid development. In the middle stage, the number of effective seedlings was 240000 ~ 250000 per 667m2. From jointing and booting to flowering and filling stage, it is mainly to raise the fetus in deep water, and the seedlings can not be roasted in water. Cut off water 10 days before harvest to protect 1000-grain weight and high yield.

The variety can be selected and bred in the field every 2 years, and the improved varieties can be propagated by selecting Qi and strong plants to prevent breeding.