Huayou 5, a New Japonica Hybrid Rice combination
Huayou 5, a new japonica hybrid rice combination, is a new combination with high quality, high yield, multi-resistance and early maturity, which is cultivated by Liaoning Academy of Agricultural Sciences. The yield comparison test was completed from 1997 to 1998, and entered the regional trial of hybrid rice in Liaoning Province in 1999. The yield of the comparative experiment from 1997 to 1998 was 574.8-698.1 kg per mu, which was 11.1-27.4% higher than that of the control Liaojing 454Mei17.
I. Fertility characteristics
The growth period of the combination is 155days, plant height 105CM, effective panicles per mu 198000 ears, tillers 10.8, panicle length 24.4CM, grains per panicle 112.4, seed setting rate 78.5%, 1000-grain weight 27g. It is an excellent combination with good comprehensive resistance, large ear, high yield potential, good rice quality and strong palatability.
Second, the main points of cultivation
1) sparse planting and sparse planting: 150g dry seeds per square meter in seedling field, and the optimum planting density of Honda is (129.9) × 5 inch, ensuring 200000 ears per mu.
2) Fertilizer and water management: 40% base fertilizer, applied in the whole layer before transplanting rice seedlings; 25% tiller fertilizer, applied around June 10; 20% continuous fertilizer, applied around June 20; ear fertilizer, 15%, applied around July 15-20. It is best to apply 1000 kilograms of agricultural fertilizer per mu. The ratio of N, P and K is 1: 1, 0.5: 1.
3) soak the seeds with evil Miaoning and soaking seed spirit.
3. Areas suitable for planting
The combination belongs to mid-early maturity and is suitable for planting in the central and northern regions such as Tieling and Shenyang.
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Breakthrough in Japonica Hybrid Rice breeding
The reporter learned from the Shanghai Academy of Agricultural Sciences on the 18th that Shanghai agricultural scientists have made a breakthrough in the breeding of japonica hybrid rice in the Yangtze River Basin. After obtaining the first restorer line of hybrid late japonica rice in the Yangtze River basin which was granted the right of national protection of new plant varieties, the first southern hybrid late japonica rice combination approved by the national variety was bred. At present, a series of strong dominant combinations have become an important support for the "provenance" of japonica hybrid rice in the Yangtze River Basin. Researchers of the crop breeding Institute of Shanghai Academy of Agricultural Sciences used the intermediate materials of indica and japonica subspecies as "bridge parents".
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Breeding and Utilization of Japonica Hybrid Rice Hanyou 1027
Hanyou 1027 is a new japonica hybrid rice combination bred by Hanfeng male sterile line and T1027 restorer line in 1985. In 1986, the proving ground of the hospital produced 581.7kg per mu, which was 11.8% higher than that of Hanfeng. In 1988, the institute produced 604.6kg per mu of 1.2mu, 22.0% higher than that of Xiushui 04. The combination takes 153 to 156 days for single cropping rice in Shanghai and 122 to 142 days for double cropping rice in Changsha and Hangzhou.
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