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 compatibility between indica and japonica subspecies is determined by their affinity substances. Under the same conditions, the gene compatibility of "two-line hybrid rice breeding" and "three-line hybrid rice breeding" is the same. If you want to know more about rice breeding, we suggest you contact the Green Food Research Institute of the Provincial Academy of Agricultural Sciences.
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How to choose rice varieties scientifically
How to select rice varieties scientifically, we should follow the following principles: (1) approved varieties with strong resistance. (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 seed purity is good.
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How to Tillage Rice Field by Machine
Different tillage methods should be adopted according to stubble and soil characteristics, and base fertilizer should be applied according to soil fertility. 1. The stubble field is tilled, and the previous stubble straw is crushed. The straw must be crushed and scattered evenly when the previous crop is harvested. If the straw is not crushed during mechanical harvesting, one more straw crushing operation should be added or the straw should be removed from the field. 2. Drought. Under the condition of suitable soil moisture and moisture content, three methods of stubble cleaning can be adopted: normal rotation (reverse rotation), shallow tillage and harrowing.
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