Effect of Grown in Middle Colony Structure on the Yield and Yield Components of Rice Variety
Ye Yongyin et al (Bijie Institute of Agricultural,Bijie,Guizhou 551700)
From the field trails of 8 different fertilization ratios and quantity as basal,the study on the colony structure on the paddy rice growth period and yield and factors of yield was carried out .It revealed that:①the weight of sheath/the weight of leaves, quantities of the stems, weight of single tiller and the length of inversion 3 rd leaf,leaves weight/leaves acre, length of the sword leaf in the paddy rice growth period contributed to 96.02% of yield;②the validity fringe in the autumn was mainly effected by the quantity of tillers, weight of tiller/weight of leaves and weight of leaves/acre of leaves of the paddy period, the total grains was mainly effected by the weight of leaves/acre of leaves, weight of tillers/weight of leaves, length of the inverted 2 nd leaf and quantity of tillers, the true grains was effected by weight of tiller/weight of leaves, weight of leaves/acre of leaves, quantity of tillers, the weight of 1000 grains was unmarkedly effected by the weight of leaves/acre of leaves;③it was the primary foundation for the better ways of application fertilizer and management rice to spur the colony structure form proper quantity of tillers and improved weight of tillers/weight of leaves.④it can make rice develop the optimal colony of source and bank to enhance the yield through the application of 70%～80% of the total N fertilizer deeply as basal manure, the rest as ear manure.
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