Fertilization method for improving yield of sugar grass

Abstract

The invention relates to a fertilization method for sugar grass. The fertilization method is characterized in that a cultivated field is in a low-altitude area which is lower than 500m in the Three Gorges Dam area in China; the soil is yellow soil; the pH value of the soil is 7.2; the dosage of a nitrogenous fertilizer in unit area is 150-250kg/hm<2>; the dosage of a phosphatic fertilizer in unit area is 70-120kg/hm<2>; the dosage of a potash fertilizer in unit area is 70-120kg/hm<2>; 40% of a nitrogenous fertilizer, all the phosphatic fertilizer and the potash fertilizer are taken as base fertilizers; the residual 60% of the nitrogenous fertilizer is used as top application after being cut for the first time and the second time respectively according to the mean dosage; the base fertilizers are fertilized one day before seeding; all the phosphatic fertilizer and the potash fertilizer, and the 40% of the nitrogenous fertilizer are evenly mixed and sprayed on the surface and then are covered; 3-5 seeds are fed to each nest by using a nest sowing method; the seeding amount is 30kg/hm<2>; the nest distance is 30-40cm; and watering is timely carried out after seeding. By adopting the method, the roles of the nitrogenous fertilizer, the phosphatic fertilizer and the potash fertilizer can be effectively and fully played; the yield of the sugar grass is improved; the quality of the sugar grass is improved; the palatability of the sugar grass is enhanced; and the fertilization method is especially suitable for the Three Gorges Dam area in China and another areas which are similar to the Three Gorges Dam area in China on the aspects of environments and climatic conditions.

Description

technical field [0001] The invention relates to a pasture fertilization method, in particular to a fertilization method for increasing sweet sorghum yield. Background technique [0002] Sweet sorghum is an excellent economic crop and bioenergy crop. It has the characteristics of drought resistance, flood resistance, and salt-alkali resistance. It can be used as feed (green feed, processed into hay or silage), and can also be used to produce fuel ethanol. With the development of herbivorous animal husbandry, the area of ​​sweet sorghum artificially planted for feed is increasing year by year. However, through investigation, it was found that the yield of sweet sorghum planted in different regions varies greatly. For example, CN102405746B announced "the method of planting sweet sorghum in seaside heavily saline-alkali land". This patent reduces the salt content of the sweet sorghum soil plow layer during the sowing period through a series of measures such as land preparation,...

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