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Shanyou63 Seed yield cultivation of the specifications and system


7,8 two treatments, the chamber width are 3m, paternal acres of planting density was 2 million and 3 million to see the car too wide, too few male basic seedling, resulting in less pollen, pollen density thin, seed setting rate decreased, especially in the central compartment is difficult to pollination female Ai. Therefore, seed production should be appropriate to reduce the line ratio, increased planting density male plug to 2 male pollen to increase the amount, in order to effectively improve the chances of female weed the award to improve seed set. 4, different planting to deal with the relationship of the four factors of production, the male planting density (F = 10.22, F0.O1 = 8.65) and female planting density (F = 10.58, F0.01 = 8.65) on yield differences are significant up to board level, specifications of the car width and female transplanting on yield differences were not significant. From this, the four factors, the main factor affecting the yield of the parent plants planting density. Analysis of variance table chewing, the highest yield of the two plant processing, dealing with 3 and 5,[link widoczny dla zalogowanych], paternal acres of planting density of 3-4 million acres of planting density are 25 million female parent, the output of the other seven treatment 6 Lun treatment difference was significant, with 5 treatments significantly different at the level of the lowest yield of the two plant} dealing, dealing with 4 and 1, the paternal acres of planting density was 2 million acres of planting density as the female parent 15-2O million. To be seen. , 1, * / l 1994 ��of cotton suitable for intercropping with spring wheat varieties and screening Yue Han Dong Super Sf? '/ B (Ying Feng drug j: Division: jf5247O) Ma Xinming Sundui Li Zhang Gensen Wu guess)' (Henan Funeral Asia-Pacific Studies) Abstract The analysis of variance, analysis, and tank units poly wife evaluation, promotion and production of the current development potential of the 15 wheat varieties (Beijing) and the feasibility of the spring cotton intercropping system was analyzed,[link widoczny dla zalogowanych], from which appropriate screening Cotton interplanted with spring wheat varieties (parents) 7, for the production of quite a reference iodine. Key tone selection wheat intercropping wheat Wheat Wheat and Cotton on the progress of selection is very important that it requires should be dwarf wheat varieties, early maturing, high yield and other characteristics, but the lack of quantitative analysis of these features, this, in 1990 selected in 1992 to promote the production has already started and the 15 signs of wheat varieties (lines) and the spring cotton intercropping trial, and made its characters and yield performance of a comprehensive analysis of these wheat varieties (lines) and intercropping of spring species viability. Materials and methods Test in Experimental Station of Henan Agricultural University. Test to soils as soil,[link widoczny dla zalogowanych], sandy loam soil, fertility above average for the varieties from Xuchang, Zhengzhou City Agricultural Exhibition Centre and the public parent seed planting density foot, into the ear, the output is high. If the male basic seedling less, the impact of causing less pollen pollination, as Chiang little. If the female basic seedling less, even if the male pollen is adequate, strong and high, but with less than solid and effective prayer, it is difficult to I2 = I yield increase. Summary hybrid rice species in the production of three to be attached, in addition to grain weight in all treatments there was no significant difference between the smell outside the setting rate,[link widoczny dla zalogowanych], acres of effective panicles of different treatments were significantly different. Therefore, good coordination between them for the main planting time and take the appropriate measures, is essential. l, car width and seed setting rate of the male parent seed planting density is the main factor tests showed that the car wide and 1. 67-2.33m, male basic seedling 40,000 acres of the highest seed set. 2, the female effective prayer prayer effective number of female influence is significant and female car wide planting density, while the female parent plant size on the number of no significant effect on the effective Ying. Years of seed testing proved that most of the south of Henan rice planting density than the wrong kind of effective prayer, and therefore, as long as the car number of a certain width and female points, seedlings should be to maximize the number of stems per hole, such as the chamber width is reduced by a 3m 2.33m, the number of female from the 3.8 million acres of points was reduced to 35,000 points, 6 points should be increased seedling stems 7-8, 25 million acres of planting density on the options above, so as to make effective Prayer Ji-to 2O million. 3, eight types of production tests showed that the tested four days, the most important influence on the yield of the parents of the base acres. As the cultivation of only two lines of every car male, and so must the small village of species lines than fins. 3-3.33m wide and the car should be reduced to 2.33m or so, so as to effectively improve male planting density. The female of the implantation rate on the seed size, number of spikelets single prayer, acres into spikes were not significant, regardless of the kind of plant size, as long as the foot in seedlings, you can get a higher number of effective prayer and high yields. Dabie Mountains hybrid rice seed production, to break through the current mu] OOkg so, and then to a higher level, they should expand the line of the original purpose than education, increasing female plug seedlings, to reduce the line ratio,[link widoczny dla zalogowanych], while increasing parental planting density. �� 3'q7
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