Seed production method of hybrid rice
A technology of hybrid rice and sowing time, which is applied in the agricultural field, can solve the problems that affect the development prospect of hybrid rice seed production, affect the quality and yield of hybrid rice, and fail to complete a large number of seed production work, so as to increase the yield of seed production and increase the seed setting The effect of improving efficiency, improving work efficiency and production
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Embodiment 1
[0052] The present invention comprises the following steps (taking the seed production method of Yixiang 2308 variety as an example):
[0053] (1). Sowing seedlings
[0054] ①.Under normal circumstances, the male parent is on March 20th, the female parent is on April 15th, the time difference is 27 days, the leaf difference is 5.6, the first sowing period of the male parent is 117 days, and the first sowing period of the female parent is 90 days. The expected earing time of the male parent is On July 15th, the first earing time of the female parent is July 14th, and the dosage of the male parent is 0.5kg per mu of land, so as to set the sowing time to ensure that the flowering periods of the male parent and the female parent meet; ②. The male parent seedling field per mu Use 1500kg of human and livestock manure, 35kg of phosphate fertilizer, and 35kg of ammonium bicarbonate. Urea can also be used instead of ammonium bicarbonate. The amount of urea is 10kg, potassium fertilizer...
Embodiment 2
[0064] The present invention comprises the following steps (taking the seed production method of Zhongyou 18 varieties as an example):
[0065] (1). Sowing seedlings
[0066] ①. Under normal circumstances, the male parent is on March 20, the female parent is on May 20, the time difference is 60 days, the leaf difference is 10.7, the male parent's sowing start period is 123 days, and the female parent's sowing start period is 63 days. The estimated earing time of the male parent is On July 21, the first earing time of the female parent is July 22, and the dosage of the male parent is 0.5kg per mu of land, so as to set the sowing time to ensure that the flowering periods of the male parent and the female parent meet; ②. The male parent seedling field per mu Use 1500kg of human and livestock manure, 40kg of phosphate fertilizer, and 40kg of ammonium bicarbonate. Urea can also be used instead of ammonium bicarbonate. The amount of urea is 10kg, potassium fertilizer 7.5kg, and zinc...
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