The reasons for the formation of empty shells in rice are due to the inability to fertilize and form empty shells during flowering. After the fertilization of cereals, the panicles are malnourished and the ovary ceases to develop semi-solid grains in the middle. The empty pods are closely related to external environmental conditions and cultivation conditions. Relationships are less when conditions are right, otherwise they are more. Its prevention and control measures: 1. Select improved varieties. According to local conditions, varieties with strong early-maturity and high-resistance were selected, and early-July-August-July-early heading was required to achieve early maturation and avoid late-stage low temperatures. At the same time, varieties with low temperature tolerance and disease resistance were selected. 2. Develop reasonable cultivation measures. Early training of strong hoe, planting, fertilizing and a series of management measures to keep up with, to reduce the occurrence of open space. 3. Promote the transport of organic substances and accelerate the speed of solidification. The use of chemical agents and trace elements has a certain effect on the prevention of empty maggots. For example, spraying 1%-2% calcium sulphate on the foliar before and after young panicle differentiation can reduce empty lice. Spraying at the heading stage can speed up grouting speed. . Spraying with 950 plant hormones at flowering stage can promote fruit setting.
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