In order to prevent droughts and reduce droughts in rapeseed rape, the following technical measures for rapeseed disaster reduction were specially formulated according to local natural irrigation conditions:

1. Conditionally cover the bare ground between rows of rapeseed with straw, straw, leaves, etc. to reduce evaporation of water.

2. Where there are irrigation conditions, as soon as possible watering drought, it is best to use a small amount of manure on the water, can take the form of furrow irrigation, water irrigation to the depth of the trench 2 / 3 is appropriate; once the drought relief, it is necessary to grasp the shallow Earthworms, soil clods, reduce soil gaps, reduce soil moisture evaporation.

3. Strengthen fertilizer and water management. According to the growth of the seedlings, 5-10 kg of urea (or 10-15 kg of ammonium bicarbonate) and 5-10 kg of potassium fertilizer should be applied before the irrigation, per acre. Nitrogen fertilizer in the late growth period of rapeseed should not be excessive, so as to avoid late-maturing glutinous rice, affecting post-cropping; late-planting and late-planting; weak field plots of seedlings should be sprayed with foliar fertilizer, 2 kg of urea per acre, potassium dihydrogen phosphate 2 Kg, no application of boron fertilizer in the previous period, plus 1 kg of boron fertilizer and 50 kg of water, sprayed once a week, and sprayed 2-3 times.

4. The timely prevention and control of pests and diseases, especially the prevention and control of locusts, should be based on prevention, agricultural control and chemical control combined to achieve early cure, cure small, and cure. Rapeseed locust occurrence coincides with rapeseed flowering period, and the medicament can be sprayed with 40% dimethoate EC or 50% chlorfenacin EC or 50% phoxim EC 1500-2000 times to control aphids. From the crusting stage, the foot, diseased leaves and dead leaves were removed to reduce the nutrient consumption of the waste leaves and to inhibit pathogen infection. Strengthen field permeability, improve and promote the ecological environment of individuals and groups.

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