How to choose rice varieties scientifically
How to choose rice varieties scientifically, we should follow the following principles:
(1) varieties with strong resistance after examination and approval.
(2) large-scale planting of a single variety should be avoided in the same village and town, and four varieties of 3muri should be planted together.
(3) as the climatic conditions this year are not very favorable, varieties with earlier maturity should be selected.
(4) choose the varieties sold by regular manufacturers. It is best to buy seeds from the breeding unit, because the breeding unit knows the characteristics of the variety and adapts to the region. The purity of seeds is good, which is beneficial to ensure a good harvest.
In addition, when purchasing seeds, you must clearly introduce the climatic conditions, cultivation techniques, varieties, incidence and yield performance of your planting place, so as to facilitate the comprehensive analysis of experts and help you choose the varieties that are most suitable for you to grow. At the same time, a small number of demonstration varieties can be planted to prepare for the selection of new varieties in the future.
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How to produce high-yielding rice seedlings
Rice is the main food crop in the south and west of Shandong Province, which has high yield and strong commodity, but the income of farmers in the rice area has been affected because of the disorderly varieties and serious diseases in recent years. Therefore, it is necessary to implement various rice seedling techniques to lay a good foundation for high yield and bumper harvest of rice. First, select high-quality varieties. Although Yujing 6 has poor disease resistance, it has good quality, strong photosynthetic efficiency, compensation capacity and high yield, so it should still be the leading variety this year, which can be planted with Lindao 11, Zhendao 88 and Shengdao 80.
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How to carry out Rice breeding
In the process of hybrid rice breeding, the sterility of rice male sterile lines is affected by photosensitive factors. Male sterile lines are generally sterile under long sunshine from April to September and fertile under short sunshine from September to April next year. Therefore, the yield of "two-line hybrid rice breeding" is more than 20% higher than that of "three-line hybrid rice breeding", and it overcomes the problems of singleness of sterile cytoplasmic source and great limitation of heterosis utilization. The genetic affinity between indica and japonica subspecies is affected by its affinity substance.
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