Dragonflies are lower-grade invertebrates than insects. Commonly referred to as "parasites" and "soft snails" are similar to snails, but they have no shells, and their surface is softer, hi wet, and occurs in low wetlands. The newly hatched larvae eat leafy meat, and after .......

First, the election site preparation

(1) Geological topography: It is better to choose sandy soils with deep soil, loose fertility, high topography and good drainage. Flatland should be used as a drainage ditch; mountains and ridges should be selected for low slopes in Xiangyang, a.......

Leaf lesions are nearly circular, with orange-red spots on the leaves when wet, which is a large number of conidial conglomerates. Control methods: 1 Remove the diseased leaves, concentrated burning; 2 before transplanting with 1:1:1:50-200 Bordeaux mixture seedlings for 5 minutes to 10 minute.......

First, the classification of chicken feathers

Chicken, split chicken and pheasant. They are exposed outside the body of the feathers, such as wing feathers, back feathers, waist feathers; patch skin cover some of the velvet, referred to as fluff. The output of feathers is 7.6% to 8.......

Bacterial keratopathy is one of the major diseases on cucumber, which has gradually increased in recent years. Measures should be taken as soon as possible.

Cucumber can develop from the seedling stage to the adult stage, mainly damage the leaves, and occasionally occurs on melons .......

This year, the wheat planting area in our district reached 17,000 mu. Due to the low temperature in early spring, the normal growth of wheat is affected. The proportion of second and third types of wheat is relatively large, the growth period is delayed, and the first day is the same as last y.......

Plowing in winter is not only an important measure to increase cotton production, but also an effective method to eliminate overwintering bollworms. According to research, the bollworm is generally wintering at 2.5 to 6 centimeters from the ground (up to 9 centimeters deep). Winter plowing.......

One is topping. Generally, the rules of fruit set in eggplant increase with the tillering of the plants. It is basically one fruit per tiller. Therefore, after the planting, the picking should be carried out in time to promote its rapid branching, increase the result position, and increase.......

Make preparations before your job 1. Make a small job plan. 2. Debugging equipment. Inspect equipment state comprehensively, install and adjust according to agricultural technical requirements and technical requirements of the engine, such as the entire plant spacing of the regulators, and.......